Shape-Memory Alloys Handbook

Shape-Memory Alloys Handbook

by Christian Lexcellent

NOOK Book(eBook)

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Product Details

ISBN-13: 9781118577950
Publisher: Wiley
Publication date: 04/08/2013
Series: ISTE
Sold by: Barnes & Noble
Format: NOOK Book
Pages: 400
File size: 17 MB
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About the Author

Professor Christian Lexcellent U.F.R. Sciences and Technics, Laboratory of Applied Mechanics, University of Franche-Comté, Besançon, France.

Table of Contents

Foreword xiii

Preface xv

Chapter 1. Some General Points about SMAs 1

1.1. Introduction 1

1.2. Why are SMAs of interest for industry? 2

1.3. Crystallographic theory of martensitic transformation 5

1.4. Content of this book 8

Chapter 2. The World of Shape-memory Alloys 11

2.1. Introduction and general points 11

2.2. Basic metallurgy of SMAs, by Michel Morin 12

2.3. Measurements of phase transformation temperatures 27

2.4. Self-accommodating martensite and stress-induced martensite 28

2.5. Fatigue resistance 29

2.6. Functional properties of SMAs 35

2.7. Use of NiTi for secondary batteries 42

2.8. Use of SMAs in the domain of civil engineering 42

Chapter 3. Martensitic Transformation 49

3.1. Overview of continuum mechanics 49

3.2. Main notations for matrices 50

3.3. Additional notations and reminders 51

3.4. Kinematic description 57

3.5. Kinematic compatibility 61

3.6. Continuous theory of crystalline solids 62

3.7. Martensitic transformation 67

3.8. Equation governing the interface between two martensite variants Mi/Mj or the “twinning equation” 70

3.9. Origin of the microstructure 73

3.10. Special microstructures 76

3.11. From the scale of the crystalline lattice to the mesoscopic and then the macroscopic scale 84

3.12. Linear geometric theory 88

3.13. Chapter conclusion 95

Chapter 4. Thermodynamic Framework for the Modeling of Solid Materials 97

4.1. Introduction 97

4.2. Conservation laws 98

4.3. Constitutive laws 103

Chapter 5. Use of the “CTM” to Model SMAs 109

5.1. Introduction 109

5.2. Process of reorientation of the martensite variants in a monocrystal 109

5.3. Process of creation of martensite variants in a monocrystal: pseudoelastic behavior 118

5.4. Prediction of the surfaces for the austenite → martensite phase transformation 122

Chapter 6. Phenomenological and Statistical Approaches for SMAs 129

6.1. Introduction 129

6.2. Preisach models 130

6.3. First-order phase transitions and Falk’s model 132

6.4. Constitutive framework of the homogenized energy model 142

6.5. Conclusion 154

Chapter 7. Macroscopic Models with Internal Variables 157

7.1. Introduction 157

7.2. RL model 159

7.3. Anisothermal expansion 173

7.4. Internal variable model inspired by micromechanics 181

7.4.1. Introduction 181

7.5. Elastohysteresis model: formalism and digital implantation 223

7.6. Conclusion 233

Chapter 8. Design of SMA Elements: Case Studies 235

8.1. Introduction 235

8.2. “Strength of materials”-type calculations for beams subject to flexion or torsion 235

8.3. Elements of calculations for SMA actuators 245

8.4. Case studies 251

Chapter 9. Behavior of Magnetic SMAs 261

9.1. Introduction 261

9.2. Some models of the thermo-magneto-mechanical behavior of MSMAs 262

9.3. Crystallography of Ni-Mn-Ga 265

9.4. Model of the magneto-thermo-mechanical behavior of a monocrystal of magnetic shape-memory alloy 270

9.5. Conclusion 293

Chapter 10. Fracture Mechanics of SMAs 295

10.1. Introduction 295

10.2. The elastic stress field around a crack tip 296

10.3. Prediction of the phase transformation surfaces around the crack tip (no curvature at the crack tip) 311

10.4. Prediction of the phase transformation surfaces around the crack tip (curvature ρ at the crack tip) 322

10.5. Some experimental results about fracture of SMAs 325

10.6. Problem of delamination between a SMA and an elastic solid 329

Chapter 11. General Conclusion 337


11.1. Resolved problems 337

11.2. Unresolved problems 338

11.3. Suggestions for future directions 339

Appendix 1. Intrinsic Properties of Rotation Matrices (see Chapter 3) 341

A1.1. Characterization of rotations 342

Appendix 2. “Twinning Equation” Demonstration (see Chapter 3) 345

A2.1. Question 345

A2.2. Solution 345

Appendix 3. Calculation of the Parameters a, n and Q from the “Twinning ” Equation (see Chapter 3) 349

A3.1. Problem 349

A3.2. Statement 349

A3.3. Solution 350

Appendix 4. “Twinned” Austenite/Martensite Equation (see Chapter 3) 355

A4.1. Proposition 1 355

A4.2. Proposition 2 355

A4.3. Theorem 356

Bibliography 359

Index 377

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