变形镁合金

rainman

Introduction  xiii
Part I  Types and properties of magnesium alloys 1
1  Current developments in wrought magnesium alloys  3
M. O. P EKGULERYUZ, McGill University, Canada
1.1  Introduction: overview of wrought magnesium alloy development  3
1.2  Current developments in magnesium wrought alloys  6
1.3  Progress in wrought magnesium alloys  31
1.4  Future trends in wrought magnesium alloy development  55
1.5  References  59
2  Deformation mechanisms of magnesium alloys  63
S. R. A GNEW, University of Virginia, USA
2.1  Introduction  63
2.2  Basal  slip  65
2.3  Non-basal slip of <a> type dislocations  72
2.4  Non-basal slip of <c+a> type dislocations  78
2.5  Deformation  twinning  83
2.6  Dynamic  deformation  90
2.7  Conclusions  92
2.8  Acknowledgements  93
2.9  References  93
3  Twinning and its role in wrought magnesium alloys  105
M. R. B ARNETT, Deakin University, Australia
3.1  Introduction  105
3.2  Fundamentals of twinning  107
3.3  The impact of twinning on mechanical response  118
3.4  The impact of structure and processing on twinning  125
3.5  Conclusion  136
3.6  Acknowledgements  136
3.7  References  136
4  Superplasticity in magnesium alloys by severe plastic deformation  144
R. L APOVOKand Y. E STRIN, Monash University, Australia
4.1  Introduction  144
4.2  Microstructure evolution during thermomechanical processing  147
4.3  Superplastic  behaviour  157
4.4  Fracture during superplastic deformation  168
4.5  Mechanisms and models  175
4.6  Conclusions  179
4.7  References  179
5  Dynamic recrystallization in magnesium alloys  186
R. K AIBYSHEV, Belgorod State University, Russia
5.1  Introduction  186
5.2  Dynamic recrystallization (DRX) mechanisms  operating in magnesium alloys  187
5.3  Effect of initial structure on DRX  207
5.4  DRX in different magnesium alloys  211
5.5  DRX during severe plastic deformation  215
5.6  Conclusions  218
5.7  Acknowledgements  219
5.8  References  219

Part II  Processing of magnesium alloys 227
6  Direct chill casting of magnesium extrusion  billet and rolling slab  229
J. F. G RANDFIELD,  Grandfield Technology Pty Ltd, Australia
6.1  Introduction  229
6.2  Heat  and fluid flow  235
6.3  Magnesium direct chill (DC) casting technology and engineering  245
6.4  Solidified structures and defect formation  249
6.5  Conclusions  261
6.6  References  262
7  Twin roll casting of magnesium  272
E. E SSADIQI, CANMET Materials Technology Laboratory, Canada,
I.-H. J UNG, McGill University, Canada and M. A. W  ELLS,
University of Waterloo, Canada  7.1  Introduction  272
7.2  Industrial  perspective  274
7.3  Twin roll casting (TRC) process  276
7.4  Solidification and strip microstructure  282
7.5  Thermodynamic  calculations  284
7.6  Process modeling and simulation  292
7.7  Conclusions  300
7.8  References  300
8  Enhancing the extrudability of wrought magnesium alloys 304
A. G. B EER, Deakin University, Australia
8.1  Introduction  304
8.2  Extrudability of magnesium alloys  305
8.3  Microstructural development during extrusion  309
8.4  Recent extrusion alloy development  319
8.5  Conclusions  321
8.6  References  321
9  Hydrostatic extrusion of magnesium alloys  323
W. H. S ILLEKENS, TNO, The Netherlands and J. B  OHLEN,
Helmholtz-Zentrum Geesthacht, Germany  9.1  Introduction  323
9.2  Process  basics  324
9.3  Research and development issues  333
9.4  Future  trends  342
9.5  Sources of further information  343
9.6  Conclusions  343
9.7  References  344
10  Rolling of magnesium alloys  346
J. B OHLEN, G. K URZ, S. Yi and D. L ETZIG,  Helmholtz-Zentrum
Geesthacht, Germany
10.1  Introduction  346
10.2  Potential of magnesium sheets  347
10.3  The sheet rolling process and its influence on sheet properties  348
10.4  Alloying effects on sheet properties  354
10.5  Formability of magnesium sheets  362
10.6  Enabling technologies and future trends  365
10.7  Sources of further information  368
10.8  References  370
11  Forging technology for magnesium alloys  376
B.-A. B EHRENS, I. P FEIFFERand J. K NIGGE, Leibniz Universität Hannover,
Germany
11.1  Introduction  376
11.2  Forging  technology  376
Contents  vii
© Woodhead Publishing Limited, 2012
11.3  Forging of magnesium alloys  378
11.4  Near-net-shape forming of magnesium alloys  384
11.5  Conclusions  388
11.6  Acknowledgements  389
11.7  References  389
Part III Applications of magnesium alloys 391
12  Applications of magnesium alloys in automotive
engineering  393
A. A. L UOand A. K. S ACHDEV, General Motors Global
Research and Development, USA  12.1  Introduction  393
12.2  Materials  properties  394
12.3  Alloy  development  398
12.4  Manufacturing process development  408
12.5  Automotive applications of magnesium alloys  413
12.6  Future  trends  417
12.7  Conclusions  421
12.8  Acknowledgements  421
12.9  References  422
13  Biomedical applications of magnesium alloys  427
W. H. S ILLEKENS, TNO, The Netherlands and D. B  ORMANN,
Leibniz Universität Hannover, Germany  13.1  Introduction  427
13.2  Functionality of magnesium implants  429
13.3  Cardiovascular  implants  440
13.4  Orthopaedic and other implants  445
13.5  Future  trends  449
13.6  Sources of further information  451
13.7  Conclusions  452
13.8  References  453