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This book is written as an undergraduate course in phase transformations for final year students specializing in metallurgy, materials science or+ F% `5 I/ F2 G" x6 L
engineering materials. It should also be useful for research students interested in revising their knowledge of the subject. The book is based on; X$ y! t, q- ^3 `+ J% S5 n
lectures originally given by the authors at the University of Lulel for engineerins students specializing in engineering materials. Surprisingly we+ a, `( L7 k/ n6 z/ Z
found no modern treatments of this important subject in a form suitable for a course book, the most recent probably being P.G. Shewmon's Tramformations
2 t& V9 [7 A% c- `in Metals (McGraw-Hilt, 1969). There have, however, been some notable developments in the subject over the last decade, particularly in
+ l- v7 I. o' X3 f& kstudies of interfaces between phases and interface migration, as well as the kinetics of precipitate growth and the stability of precipitates. There have
& c: ~3 V. Z7 o# a8 ]* e- walso been a number of important new practical developments based on phase transformations, including the introduction of TRIP steels (transformation) [3 ?' l) J+ H6 }4 f" o
induced by plastic deformation). directionally aligned eutectic composites. and sophisticated new structural steeIs with superior weldability
9 A& Z9 @( R- a& ]* zand forming properties. to mention just a few. In addition. continuous casting and high speed, high energy fusion welding have emerged strongly in; `9 t# ]5 R& i9 `
recent years as irnportan t production applications of solidification. It was the objective of this course to present a treatment of phase transformations in
/ O7 l# t8 E, a8 xwhich these and other new developments could be explained in terms of the basic principles of thermodynamics and atomic mechanisms. |
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发表于 2009-1-29 16:35:39
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