Introduction to Shape Memory Alloys (SMAs) (Micro)structural aspects of martensitic transformations (MT) Thermodynamic issues of MT Self-accomodation
|
|
|
- Christopher Small
- 7 years ago
- Views:
Transcription
1 Introduction to Shape Memory Alloys (SMAs) (Micro)structural aspects of martensitic transformations (MT) Thermodynamic issues of MT Self-accomodation modes Detwinning One-way shape memory effect Superelasticity Two-way shape memory effect Superelasticity Pseudoelasticity Nitinol alloys Applications
2 (Micro)structural aspects Thermally induced martensitic transformation BAIN STRAIN SMAs
3 (Micro)structural aspects SMAs
4 (Micro)structural aspects austenite martensite SMAs
5 (Micro)structural aspects AUSTENITE: Cubic (B2) high simmetry MARTENSITE: Monoclinic (B19) low simmetry SMAs
6 (Micro)structural aspects SMAs
7 Thermodynamic issues M s M f M s A s A f
8 Thermodynamic issues M f M s A s A f Main features of the MT: First order Athermic Non diffusive Reversible
9 Thermodynamic issues
10 Thermodynamic issues
11 Thermodynamic issues
12 Thermodynamic issues
13 Thermodynamic issues s M s s s A s M s
14 Thermodynamic issues
15 Thermodynamic issues
16 Thermodynamic issues
17 Thermodynamic issues % di fase austenitica riscaldamento raffreddamento Temperatura
18 Thermodynamic issues % di fase trasformata Temperatura ( C) % di fase martensitica % di fase austenitica
19 Thermodynamic issues
20 Self accommodation modes
21 Self accommodation modes INVARIANT SHEAR STRAIN: Mechanisms for accommodating shape and/or volume changes SLIP
22 Self accommodation modes INVARIANT SHEAR STRAIN: Mechanisms for accommodating shape and/or volume changes TWINNING
23 Self accommodation modes
24 Self accommodation modes TWINNING: Thermally reversible strain! Some features of twins: Low energy High mobility No break of chemical bonds
25 Self accommodation modes SEVERAL VARIANTS... i.e., ORIENTATIONS
26 Self accommodation modes
27 Self accommodation modes
28 Self accommodation modes About thermal hysteresis: a comparison between transformation nature THERMOELASTIC (Au-Cd) Fully MARTENSITIC, i.e., no THERMOELASTIC (Fe-Ni) Au-Cd: A->M - nucleation/growth M->A - inversion Fe-Ni: A->M & M->A nucleation/growth
29 Self accommodation modes Result of self accommodation: the shape is preserved.
30 Detwinning DETWINNING
31 Detwinning MACRO & MICROSCOPIC ASPECTS of DETWINNING
32 Detwinning
33 Detwinning T<M f
34 Detwinning T<M f
35 Detwinning Tension Compression Tension Compression
36 Detwinning
37 Detwinning Compression 4% Tension 4%
38 One-way shape memory effect 1) 3) 2) 1) austenite->martensite (thermally induced) 2) deformation of martensite 3) martensite->austenite (thermally induced) SHAPE RECOVERY!
39 One-way shape memory effect
40 One-way shape memory effect Requirements for shape recovery: Twinning as accommodation mode of Martensite; Very small or nil volume changes involved in the A<->M transformation (<<1%).
41 One-way shape memory effect FIRST CICLE A M M A SECOND CICLE A M Shape change occurs just once: One Way Shape Memory Effect (OWSME) Leghe a memoria di forma
42 One-way shape memory effect
43 Superelasticity Mechanically induced martensitic tranformation OWSME
44 Superelasticity
45 Superelasticity T>A f
46 Superelasticity
47 Superelasticity SUPERELASTICY: elevated strains (8%)... Fully recoverable (reversible)
48 Superelasticity dσ dt = ΔH M >A ΔV def T t
49 Superelasticity
50 Superelasticity
51 Superelasticity Superelastic range Sistema Isteresi Ms Range NiTi C -60/60 C NiTiCu 5-10 C 30 C/50 C AgCd 15 C -80 C CuZnAl 10 C -20/50 C CuAlNi 35 C 80/130 C NiTiNb C -20/-50 C Leghe a memoria di forma
52 Superelasticity
53 Superelasticity One-way shape memory effect
54 Superelasticity One-way shape memory effect
55 Superelasticity - Pseudoelasticity T<M f T>A f T M d T>M d
56 Superelasticity - Pseudoelasticity T<M f T>M d
57 Superelasticity - Pseudoelasticity
58 Superelasticity - Pseudoelasticity
59 Superelasticity - Pseudoelasticity 1.2% T<M f 4% 6% 0% Leghe a memoria di forma
60 Two-way shape memory effect: phenomenology One-Way SME A M M A Two-Way SME A M A...
61 Two-way shape memory effect: training High strain of martensite One-way shape memory cycles Superelastic (mechanical) cycles
62 Two-way shape memory effect: training Two Way Shape Memory Effect (TWSME) A M A...
63 Two-way shape memory effect: training
64 Two-way shape memory effect: decay of the effect Allungamento % Num ero cicli termici Sforzo (MPa) Allungamento % Allungamento % Num ero cicli termici
One Way and Two Way Shape Memory Effect: Thermo Mechanical Characterization of Ni Ti wires
Università degli Studi di Pavia Facoltà di Ingegneria Corso di Laurea Magistrale in Ingegneria Biomedica Dipartimento di Meccanica Strutturale One Way and Two Way Shape Memory Effect: Thermo Mechanical
Martensite in Steels
Materials Science & Metallurgy http://www.msm.cam.ac.uk/phase-trans/2002/martensite.html H. K. D. H. Bhadeshia Martensite in Steels The name martensite is after the German scientist Martens. It was used
A Study of the Properties of a High Temperature Binary Nitinol Alloy Above and Below its Martensite to Austenite Transformation Temperature
A Study of the Properties of a High Temperature Binary Nitinol Alloy Above and Below its Martensite to Austenite Transformation Temperature Dennis W. Norwich, P.E. SAES Memry Corporation, Bethel, CT Abstract
Transformation-Induced Relaxation and Stress Recovery of TiNi Shape Memory Alloy
Materials 2014, 7, 1912-1926; doi:10.3390/ma7031912 Article OPEN ACCESS materials ISSN 1996-1944 www.mdpi.com/journal/materials Transformation-Induced Relaxation and Stress Recovery of TiNi Shape Memory
Shape Memory Alloys: modeling and applications. Elio Sacco Dipartimento di Meccanica, Strutture, A. & T. University of Cassino
Shape Memory Alloys: modeling and applications Elio Sacco Dipartimento di Meccanica, Strutture, A. & T. University of Cassino Ferdinando Auricchio Sonia Marfia J.N. Reddy Elio Sacco F. Auricchio, E. Sacco
Micro-Welding of Nitinol Shape Memory Alloy
Micro-Welding of Nitinol Shape Memory Alloy by Billy Tam A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Master of Applied Science in Mechanical
A Multi-Channel Power Controller for Actuation and Control of Shape Memory Alloy Actuators. by Rohan Chandramohan Hangekar
ABSTRACT HANGEKAR, ROHAN CHANDRAMOHAN. A Multi-Channel Power Controller for Actuation and Control of Shape Memory Alloy Actuators. (Under the direction of Dr. Stefan Seelecke). The use of multifunctional
The Effects of Varying Active A f Temperatures on the Fatigue Properties of Nitinol Wire
The Effects of Varying Active A f Temperatures on the Fatigue Properties of Nitinol Wire M. Patel, D. Plumley, R. Bouthot Fort Wayne Metals Research Products Corporation, Fort Wayne, Indiana, USA J. Proft
Heat Engine Driven by Shape Memory Alloys: Prototyping and Design
Heat Engine Driven by Shape Memory Alloys: Prototyping and Design Ean H. Schiller Thesis submitted to the Faculty of Virginia Polytechnic Institute and State University in partial fulfillment of the requirements
Abstract of PhD Thesis. Elastic and dissipative energies in phase transformations of Cu-based shape memory alloys. Tarek Yousif AbdelRaoof El Rasasi
Abstract of PhD Thesis Elastic and dissipative energies in phase transformations of Cu-based shape memory alloys Tarek Yousif AbdelRaoof El Rasasi Supervisor Prof. Dezső Beke University of Debrecen PhD
The VT1 Shape Memory Alloy Heat Engine Design
The VT1 Shape Memory Alloy Heat Engine Design by Jillcha Fekadu Wakjira Thesis submitted to the Faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements
High temperature Cu-AI-Nb- based shape memory alloys
J. Phys. IVFrance 11 (2001) Pr8487 EDP Sciences, Les Ulis High temperature CuAINb based shape memory alloys J. Lelatko and H. Morawiec Institute of Physics and Chemistry of Metals, University of Silesia,
A Domain Wall Model for Hysteresis in Ferroelastic Materials
A Domain Wall Model for Hysteresis in Ferroelastic Materials Jordan E. Massad 1 and Ralph C. Smith 2 Department of Mathematics Center for Research in Scientific Computation North Carolina State University
FATIGUE CONSIDERATION IN DESIGN
FATIGUE CONSIDERATION IN DESIGN OBJECTIVES AND SCOPE In this module we will be discussing on design aspects related to fatigue failure, an important mode of failure in engineering components. Fatigue failure
A R C H I V E S O F M E T A L L U R G Y A N D M A T E R I A L S Volume 56 2011 Issue 2 DOI: 10.2478/v10172-011-0043-7
A R C H I V E S O F M E T A L L U R G Y A N D M A T E R I A L S Volume 56 2011 Issue 2 DOI: 10.2478/v10172-011-0043-7 E. PIECZYSKA, J. DUTKIEWICZ, F. MASDEU, J. LUCKNER, R. MACIAK INVESTIGATION OF THERMOMECHANICAL
Incorporating Innovative Materials for Seismic Resilient Bridge Columns
Incorporating Innovative Materials for Seismic Resilient Bridge Columns WSDOT Including Contributions from: Dr. M. Saiid Saiidi University Nevada, Reno Brain Nakashoji University Nevada, Reno Presentation
This is an author-deposited version published in: http://sam.ensam.eu Handle ID:.http://hdl.handle.net/10985/10324
Science Arts & Métiers (SAM) is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. This is an author-deposited
Leghe a memoria di forma come tecnologia di attuazione per la biorobotica
Leghe a memoria di forma come tecnologia di attuazione per la biorobotica Milano, 7 novembre, 2013 Maurizio Follador maurizio.follador@sssup.it Advanced Education, Frontier Interdisciplinary Research and
Material Deformations. Academic Resource Center
Material Deformations Academic Resource Center Agenda Origin of deformations Deformations & dislocations Dislocation motion Slip systems Stresses involved with deformation Deformation by twinning Origin
Chapter Outline: Phase Transformations in Metals
Chapter Outline: Phase Transformations in Metals Heat Treatment (time and temperature) Microstructure Mechanical Properties Kinetics of phase transformations Multiphase Transformations Phase transformations
Lecture 19: Eutectoid Transformation in Steels: a typical case of Cellular
Lecture 19: Eutectoid Transformation in Steels: a typical case of Cellular Precipitation Today s topics Understanding of Cellular transformation (or precipitation): when applied to phase transformation
Mechanical Properties of Metals Mechanical Properties refers to the behavior of material when external forces are applied
Mechanical Properties of Metals Mechanical Properties refers to the behavior of material when external forces are applied Stress and strain fracture or engineering point of view: allows to predict the
Phase Transformations in Metals and Alloys
Phase Transformations in Metals and Alloys THIRD EDITION DAVID A. PORTER, KENNETH E. EASTERLING, and MOHAMED Y. SHERIF ( г йс) CRC Press ^ ^ ) Taylor & Francis Group Boca Raton London New York CRC Press
Solution for Homework #1
Solution for Homework #1 Chapter 2: Multiple Choice Questions (2.5, 2.6, 2.8, 2.11) 2.5 Which of the following bond types are classified as primary bonds (more than one)? (a) covalent bonding, (b) hydrogen
The mechanical properties of metal affected by heat treatment are:
Training Objective After watching this video and reviewing the printed material, the student/trainee will learn the basic concepts of the heat treating processes as they pertain to carbon and alloy steels.
WJM Technologies excellence in material joining
Girish P. Kelkar, Ph.D. (562) 743-7576 girish@welding-consultant.com www.welding-consultant.com Weld Cracks An Engineer s Worst Nightmare There are a variety of physical defects such as undercut, insufficient
Hysteretic transformation behaviour of shape memory alloys
Hysteretic transformation behaviour of shape memory alloys J. Van Humbeeck, E. Aernoudt, L. Delaey, Lu Li, H. Verguts, J. Ortin To cite this version: J. Van Humbeeck, E. Aernoudt, L. Delaey, Lu Li, H.
CHAPTER 7 DISLOCATIONS AND STRENGTHENING MECHANISMS PROBLEM SOLUTIONS
7-1 CHAPTER 7 DISLOCATIONS AND STRENGTHENING MECHANISMS PROBLEM SOLUTIONS Basic Concepts of Dislocations Characteristics of Dislocations 7.1 The dislocation density is just the total dislocation length
Vibration control with shape memory alloys in civil engineering strutctures
Vibration control with shape memory alloys in civil engineering strutctures Filipe Amarante dos Santos Processing, characterization and applications of shape memory alloys June 14, 2013 Generic stress-strain
Iron-Carbon Phase Diagram (a review) see Callister Chapter 9
Iron-Carbon Phase Diagram (a review) see Callister Chapter 9 University of Tennessee, Dept. of Materials Science and Engineering 1 The Iron Iron Carbide (Fe Fe 3 C) Phase Diagram In their simplest form,
Materials Issues in Fatigue and Fracture
Materials Issues in Fatigue and Fracture 5.1 Fundamental Concepts 5.2 Ensuring Infinite Life 5.3 Finite Life 5.4 Summary FCP 1 5.1 Fundamental Concepts Structural metals Process of fatigue A simple view
Mechanical Behavior of Materials Course Notes, 2 nd Edition
Mechanical Behavior of Materials Course Notes, 2 nd Edition Prof. Mark L. Weaver Department of Metallurgical & Materials Engineering A129K Bevill Building The University of Alabama Tuscaloosa, AL 35487-0202
Heat Treatment of Steel
Heat Treatment of Steel Steels can be heat treated to produce a great variety of microstructures and properties. Generally, heat treatment uses phase transformation during heating and cooling to change
Chapter Outline Dislocations and Strengthening Mechanisms
Chapter Outline Dislocations and Strengthening Mechanisms What is happening in material during plastic deformation? Dislocations and Plastic Deformation Motion of dislocations in response to stress Slip
Hardened Concrete. Lecture No. 14
Hardened Concrete Lecture No. 14 Strength of Concrete Strength of concrete is commonly considered its most valuable property, although in many practical cases, other characteristics, such as durability
HEAT TREATMENT OF STEEL
HEAT TREATMENT OF STEEL Heat Treatment of Steel Most heat treating operations begin with heating the alloy into the austenitic phase field to dissolve the carbide in the iron. Steel heat treating practice
Chapter Outline. Mechanical Properties of Metals How do metals respond to external loads?
Mechanical Properties of Metals How do metals respond to external loads? Stress and Strain Tension Compression Shear Torsion Elastic deformation Plastic Deformation Yield Strength Tensile Strength Ductility
Integrated Computational Materials Engineering (ICME) for Steel Industry
Integrated Computational Materials Engineering (ICME) for Steel Industry Dr G Balachandran Head ( R&D) Kalyani Carpenter Special Steels Ltd., Pune 411 036. Indo-US Workshop on ICME for Integrated Realization
LABORATORY EXPERIMENTS TESTING OF MATERIALS
LABORATORY EXPERIMENTS TESTING OF MATERIALS 1. TENSION TEST: INTRODUCTION & THEORY The tension test is the most commonly used method to evaluate the mechanical properties of metals. Its main objective
Shape Memory Actuators for Automotive Applications. Stoeckel. Engineering Aspects of Shape Memory Alloys (eds.) T.W. Duerig, K.N. Melton et al.
We are Nitinol. ShapeMemoryActuatorsforAutomotiveApplications Stoeckel EngineeringAspectsofShapeMemoryAlloys (eds.)t.w.duerig,k.n.meltonetal. 1990 www.nitinol.com 47533 Westinghouse Drive Fremont, California
Weld Cracking. An Excerpt from The Fabricators' and Erectors' Guide to Welded Steel Construction. The James F. Lincoln Arc Welding Foundation
Weld Cracking An Excerpt from The Fabricators' and Erectors' Guide to Welded Steel Construction The James F. Lincoln Arc Welding Foundation Weld Cracking Several types of discontinuities may occur in welds
ME 612 Metal Forming and Theory of Plasticity. 1. Introduction
Metal Forming and Theory of Plasticity Yrd.Doç. e mail: azsenalp@gyte.edu.tr Makine Mühendisliği Bölümü Gebze Yüksek Teknoloji Enstitüsü In general, it is possible to evaluate metal forming operations
EFFECT OF SEVERE PLASTIC DEFORMATION ON STRUCTURE AND PROPERTIES OF AUSTENITIC AISI 316 GRADE STEEL
EFFECT OF SEVERE PLASTIC DEFORMATION ON STRUCTURE AND PROPERTIES OF AUSTENITIC AISI 316 GRADE STEEL Ladislav KANDER a, Miroslav GREGER b a MATERIÁLOVÝ A METALURGICKÝ VÝZKUM, s.r.o., Ostrava, Czech Republic,
Applying NiTi Shape-Memory Thin Films to Thermomechanical Data Storage Technology
Mater. Res. Soc. Symp. Proc. Vol. 855E 2005 Materials Research Society W1.7.1 Applying NiTi Shape-Memory Thin Films to Thermomechanical Data Storage Technology Wendy C. Crone 1, Gordon A. Shaw 2 1 Department
Chapter Outline Dislocations and Strengthening Mechanisms
Chapter Outline Dislocations and Strengthening Mechanisms What is happening in material during plastic deformation? Dislocations and Plastic Deformation Motion of dislocations in response to stress Slip
Distance Learning Program
Distance Learning Program Leading To Master of Engineering or Master of Science In Mechanical Engineering Typical Course Presentation Format Program Description Clarkson University currently offers a Distance
EXPERIMENTALLY CHARACTERIZED EMBEDDED MCKIBBEN MUSCLES AS A NASTIC MATERIAL FOR BIOMEDICAL APPLICATIONS
EXPERIMENTALLY CHARACTERIZED EMBEDDED MCKIBBEN MUSCLES AS A NASTIC MATERIAL FOR BIOMEDICAL APPLICATIONS A Thesis by OMOTAYO F. EWUMI Submitted to the Office of Graduate Studies of Texas A&M University
Objectives. Experimentally determine the yield strength, tensile strength, and modules of elasticity and ductility of given materials.
Lab 3 Tension Test Objectives Concepts Background Experimental Procedure Report Requirements Discussion Objectives Experimentally determine the yield strength, tensile strength, and modules of elasticity
(Seattle is home of Boeing Jets)
Dr. Faeq M. Shaikh Seattle, Washington, USA (Seattle is home of Boeing Jets) 1 Pre Requisites for Today s Seminar Basic understanding of Finite Element Analysis Working Knowledge of Laminate Plate Theory
bi directional loading). Prototype ten story
NEESR SG: Behavior, Analysis and Design of Complex Wall Systems The laboratory testing presented here was conducted as part of a larger effort that employed laboratory testing and numerical simulation
Proceedings of the International Conference on Shape Memory and Superelastic Technolgies, Pacific Grove, California, P.171-182 (2000).
Proceedings of the International Conference on Shape Memory and Superelastic Technolgies, Pacific Grove, California, P.171-182 (2000). INDUSTRIAL APPLICATIONS FOR SHAPE MEMORY ALLOYS Ming H. Wu and L.
Engineering Materials Research /DEVISER/
DEVelopment of Infrastructure for Smart Engineering Materials Research /DEVISER/ A Czech structural funds project aimed for building a new public research infrastructure called Laboratory of Functional
Shape-Memory Effect. From temporary shape... T > 46 8C. ...to permanent shape
Shape-Memory Effect From temporary shape... T > 46 8C...to permanent shape REVIEWS Shape-Memory Polymers Andreas Lendlein* and Steffen Kelch Material scientists predict a prominent role in the future for
Defects Introduction. Bonding + Structure + Defects. Properties
Defects Introduction Bonding + Structure + Defects Properties The processing determines the defects Composition Bonding type Structure of Crystalline Processing factors Defects Microstructure Types of
Evaluation of the Susceptibility of Simulated Welds In HSLA-100 and HY-100 Steels to Hydrogen Induced Cracking
Evaluation of the Susceptibility of Simulated Welds In HSLA-100 and HY-100 Steels to Hydrogen Induced Cracking R. E. Ricker, M. R. Stoudt, and D. J. Pitchure Materials Performance Group Metallurgy Division
LECTURE SUMMARY September 30th 2009
LECTURE SUMMARY September 30 th 2009 Key Lecture Topics Crystal Structures in Relation to Slip Systems Resolved Shear Stress Using a Stereographic Projection to Determine the Active Slip System Slip Planes
Apparatus to Measure the Shape Memory Properties of Nitinol Tubes for Medical Applications. Chen, Duerig, Pelton, Stoeckel
We are Nitinol. ApparatustoMeasuretheShapeMemoryPropertiesofNitinolTubesforMedical Applications Chen,Duerig,Pelton,Stoeckel JournaldePhysiqueIV Volume5,Decembre 1995 www.nitinol.com 47533 Westinghouse
Massachusetts Institute of Technology Department of Mechanical Engineering Cambridge, MA 02139
Massachusetts Institute of Technology Department of Mechanical Engineering Cambridge, MA 02139 2.002 Mechanics and Materials II Spring 2004 Laboratory Module No. 5 Heat Treatment of Plain Carbon and Low
Der Einfluss thermophysikalischer Daten auf die numerische Simulation von Gießprozessen
Der Einfluss thermophysikalischer Daten auf die numerische Simulation von Gießprozessen Tagung des Arbeitskreises Thermophysik, 4. 5.3.2010 Karlsruhe, Deutschland E. Kaschnitz Österreichisches Gießerei-Institut
Investigation of Titanium α Plates by EBSD Analysis
Investigation of Titanium α Plates by EBSD Analysis Master Thesis Arjen Kamp June 2007 Materials Science and Engineering Faculty 3mE Supervisors: Stefan van Bohemen Jilt Sietsma Roumen Petrov Investigation
Mechanical Properties - Stresses & Strains
Mechanical Properties - Stresses & Strains Types of Deformation : Elasic Plastic Anelastic Elastic deformation is defined as instantaneous recoverable deformation Hooke's law : For tensile loading, σ =
Turbulence, Heat and Mass Transfer (THMT 09) Poiseuille flow of liquid methane in nanoscopic graphite channels by molecular dynamics simulation
Turbulence, Heat and Mass Transfer (THMT 09) Poiseuille flow of liquid methane in nanoscopic graphite channels by molecular dynamics simulation Sapienza Università di Roma, September 14, 2009 M. T. HORSCH,
σ y ( ε f, σ f ) ( ε f
Typical stress-strain curves for mild steel and aluminum alloy from tensile tests L L( 1 + ε) A = --- A u u 0 1 E l mild steel fracture u ( ε f, f ) ( ε f, f ) ε 0 ε 0.2 = 0.002 aluminum alloy fracture
Chapter Outline. Diffusion - how do atoms move through solids?
Chapter Outline iffusion - how do atoms move through solids? iffusion mechanisms Vacancy diffusion Interstitial diffusion Impurities The mathematics of diffusion Steady-state diffusion (Fick s first law)
In vitro experiment of the modular orthopedic plate based on Nitinol, used for human radius bone fractures
Romanian Journal of Morphology and Embryology 2010, 51(2):315 320 ORIGINAL PAPER In vitro experiment of the modular orthopedic plate based on Nitinol, used for human radius bone fractures DANIELA TARNIŢĂ
Heat Treatment of Steels : Spheroidize annealing. Heat Treatment of Steels : Normalizing
Heat Treatment of Steels :Recrystallization annealing The carbon and alloy steels were treated at a temperature of about 700 C, which is about 20 C below the eutectoid temperature. The holding time should
Lecture 14. Chapter 8-1
Lecture 14 Fatigue & Creep in Engineering Materials (Chapter 8) Chapter 8-1 Fatigue Fatigue = failure under applied cyclic stress. specimen compression on top bearing bearing motor counter flex coupling
Lecture 24 - Surface tension, viscous flow, thermodynamics
Lecture 24 - Surface tension, viscous flow, thermodynamics Surface tension, surface energy The atoms at the surface of a solid or liquid are not happy. Their bonding is less ideal than the bonding of atoms
CHAPTER 8. Phase Diagrams 8-1
CHAPTER 8 Phase Diagrams 8-1 Introducción Fase: Una region en un material que difiere en estructura y función de otra región. Diagramas de fase : Representan las fases presentes en el metal a diferentes
KOLEKTOR MAGNET TECHNOLOGY
ZIT S KOERZIT S Sintered AlNiCo Koerzit is the KOLEKTOR MAGNET TECHNOLOGY GmbH tradename for sintered permanent magnets based on AlNi and AlNiCo alloys. Koerzit magnets are made by powder metallurgy. KOLEKTOR
Fatigue of Metals Copper Alloys. Samuli Heikkinen 26.6.2003
Fatigue of Metals Copper Alloys Samuli Heikkinen 26.6.2003 T 70 C Temperature Profile of HDS Structure Stress amplitude 220 MPa Stress Profile of HDS Structure CLIC Number of Cycles f = 100 Hz 24 hours
9. Force Measurement with a Strain gage Bridge
9. Force Measurement with a Strain gage Bridge Task 1. Measure the transfer characteristics of strain-gage based force sensor in a range 0 10 kg 1. 2. Determine the mass of an unknown weight. 3. Check
AP CHEMISTRY 2007 SCORING GUIDELINES. Question 2
AP CHEMISTRY 2007 SCORING GUIDELINES Question 2 N 2 (g) + 3 F 2 (g) 2 NF 3 (g) ΔH 298 = 264 kj mol 1 ; ΔS 298 = 278 J K 1 mol 1 The following questions relate to the synthesis reaction represented by the
BUMAX. REYHER your partner for the BUMAX range
BUMAX high-tensile stainless steel fasteners REYHER your partner for the BUMAX range Strongest stainless steel fasteners in the world BUMAX 88 and BUMAX ready for delivery from stock Wide range of BUMAX
EDEXCEL NATIONAL CERTIFICATE/DIPLOMA MECHANICAL PRINCIPLES OUTCOME 2 ENGINEERING COMPONENTS TUTORIAL 1 STRUCTURAL MEMBERS
ENGINEERING COMPONENTS EDEXCEL NATIONAL CERTIFICATE/DIPLOMA MECHANICAL PRINCIPLES OUTCOME ENGINEERING COMPONENTS TUTORIAL 1 STRUCTURAL MEMBERS Structural members: struts and ties; direct stress and strain,
EFFECT OF COPPER ALLOY ADDITION METHOD ON THE DIMENSIONAL RESPONSE OF SINTERED FE-CU-C STEELS
EFFECT OF COPPER ALLOY ADDITION METHOD ON THE DIMENSIONAL RESPONSE OF SINTERED FE-CU-C STEELS Michael L. Marucci and Francis G. Hanejko Hoeganaes Corporation Cinnaminson, NJ 08077 - USA Abstract Fe-Cu-C
8. Technical Heat Treatment
8. Technical Heat Treatment 8. Technical Heat Treatment 95 6 cm 4 2 0-2 -4 C 400 C C -6-14 -12-10 -8-6 -4-2 0 2 cm 6 723 C temperature C 1750 750 250 When welding a workpiece, not only the weld itself,
FATIGUE PROPERTIES OF P/M MATERIALS. Robert C. O'Brien. Hoeganaes Corporation River Road Riverton, New Jersey 08077
FATIGUE PROPERTIES OF P/M MATERIALS Robert C. O'Brien Hoeganaes Corporation River Road Riverton, New Jersey 08077 Presented at the SAE Congress Detroit, Michigan, February 29-March 4, 1988 Abstract The
Lecture 18 Strain Hardening And Recrystallization
-138- Lecture 18 Strain Hardening And Recrystallization Strain Hardening We have previously seen that the flow stress (the stress necessary to produce a certain plastic strain rate) increases with increasing
Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Two Forms of Energy
Module 2D - Energy and Metabolism Objective # 19 All living organisms require energy for survival. In this module we will examine some general principles about chemical reactions and energy usage within
Structural Integrity Analysis
Structural Integrity Analysis 1. STRESS CONCENTRATION Igor Kokcharov 1.1 STRESSES AND CONCENTRATORS 1.1.1 Stress An applied external force F causes inner forces in the carrying structure. Inner forces
This document was prepared in conjunction with work accomplished under Contract No. DE-AC09-96SR18500 with the U. S. Department of Energy.
This document was prepared in conjunction with work accomplished under Contract No. DE-AC09-96SR18500 with the U. S. Department of Energy. DISCLAIMER This report was prepared as an account of work sponsored
EUROLAB 25 years. The role of metrology and testing to characterize materials and products. EUROLAB 25th Anniversary Seminar
EUROLAB 25 years The role of metrology and testing to characterize materials and products April 9, 2015, Odense Danmark 1 Origin of Conformity Assessment The New Approach for the European Economic Community
CHROMIUM STEEL POWDERS FOR COMPONENTS. JEANETTE LEWENHAGEN Höganäs AB, Sweden
CHROMIUM STEEL POWDERS FOR COMPONENTS JEANETTE LEWENHAGEN Höganäs AB, Sweden KEYWORDS Pre-alloyed steel powder, chromium, PM ABSTRACT Chromium as an alloying element is of great interest due to its low
Numerical modelling of shear connection between concrete slab and sheeting deck
7th fib International PhD Symposium in Civil Engineering 2008 September 10-13, Universität Stuttgart, Germany Numerical modelling of shear connection between concrete slab and sheeting deck Noémi Seres
FRETTING BEHAVIOR OF AISI 301 STAINLESS STEEL SHEET IN FULL HARD CONDITION. A Thesis Presented to The Academic Faculty By Michael Robert Hirsch
FRETTING BEHAVIOR OF AISI 301 STAINLESS STEEL SHEET IN FULL HARD CONDITION A Thesis Presented to The Academic Faculty By Michael Robert Hirsch In Partial Fulfillment Of the Requirements for the Degree
CHAPTER 6 AN INTRODUCTION TO METABOLISM. Section B: Enzymes
CHAPTER 6 AN INTRODUCTION TO METABOLISM Section B: Enzymes 1. Enzymes speed up metabolic reactions by lowering energy barriers 2. Enzymes are substrate specific 3. The active site in an enzyme s catalytic
Preview of Period 2: Forms of Energy
Preview of Period 2: Forms of Energy 2.1 Forms of Energy How are forms of energy defined? 2.2 Energy Conversions What happens when energy is converted from one form into another form? 2.3 Efficiency of
MICROSTRUCTURE AND FUNCTIONAL PROPERTY CHANGES IN THIN Ni Ti WIRES HEAT TREATED BY ELECTRIC CURRENT HIGH ENERGY X-RAY AND TEM INVESTIGATIONS
Functional Materials Letters Vol. 2, No. 2 (2009) 45 54 World Scientific Publishing Company MICROSTRUCTURE AND FUNCTIONAL PROPERTY CHANGES IN THIN Ni Ti WIRES HEAT TREATED BY ELECTRIC CURRENT HIGH ENERGY
3D plasticity. Write 3D equations for inelastic behavior. Georges Cailletaud, Ecole des Mines de Paris, Centre des Matériaux
3D plasticity 3D viscoplasticity 3D plasticity Perfectly plastic material Direction of plastic flow with various criteria Prandtl-Reuss, Hencky-Mises, Prager rules Write 3D equations for inelastic behavior
The atomic packing factor is defined as the ratio of sphere volume to the total unit cell volume, or APF = V S V C. = 2(sphere volume) = 2 = V C = 4R
3.5 Show that the atomic packing factor for BCC is 0.68. The atomic packing factor is defined as the ratio of sphere volume to the total unit cell volume, or APF = V S V C Since there are two spheres associated
Introduction to Materials Science, Chapter 9, Phase Diagrams. Phase Diagrams. University of Tennessee, Dept. of Materials Science and Engineering 1
Phase Diagrams University of Tennessee, Dept. of Materials Science and Engineering 1 Chapter Outline: Phase Diagrams Microstructure and Phase Transformations in Multicomponent Systems Definitions and basic
Experimental assessment of concrete damage due to exposure to high temperature and efficacy of the repair system
MATEC Web of Conferences 6, 06002 (2013) DOI: 10.1051/matecconf/20130606002 C Owned by the authors, published by EDP Sciences, 2013 Experimental assessment of concrete damage due to exposure to high temperature
CORRELATION BETWEEN HARDNESS AND TENSILE PROPERTIES IN ULTRA-HIGH STRENGTH DUAL PHASE STEELS SHORT COMMUNICATION
155 CORRELATION BETWEEN HARDNESS AND TENSILE PROPERTIES IN ULTRA-HIGH STRENGTH DUAL PHASE STEELS SHORT COMMUNICATION Martin Gaško 1,*, Gejza Rosenberg 1 1 Institute of materials research, Slovak Academy
P4 Stress and Strain Dr. A.B. Zavatsky MT07 Lecture 3 Statically Indeterminate Structures
4 Stress and Strain Dr... Zavatsky MT07 ecture 3 Statically Indeterminate Structures Statically determinate structures. Statically indeterminate structures (equations of equilibrium, compatibility, and
Strengthening. Mechanisms of strengthening in single-phase metals: grain-size reduction solid-solution alloying strain hardening
Strengthening The ability of a metal to deform depends on the ability of dislocations to move Restricting dislocation motion makes the material stronger Mechanisms of strengthening in single-phase metals:
TUITION FEES SCHEDULE
Appendix 2 TUITION FEES SCHEDULE 1.0 INTENSIVE ENGLISH COURSE (IEC) 1.1 Length of Study: 18 weeks 1.2 Course Structure: 18 weeks (mix of face to face teaching and structure self-study hours), 5 hours study
Designing Safe and Reliable HPHT Subsea Wellhead Systems
Designing Safe and Reliable HPHT Subsea Wellhead Systems New Technology to Accommodate a System Approach to Verification Analysis and Validation Testing Dr. Jim Kaculi, P.E., Dril-Quip Inc. Outline HPHT
Surface Treatments. Corrosion Protective coatings for harsh environments (catalytic converters, electrochemical cells )
Surface Treatments Applications Biomedical (biocompatible coatings on implants, drug coatings for sustained release ) Mechanical Tribological friction and wear (tool steels, implants ) Fatigue minimize