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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! _2 P0 q" r2 D$ l( v; B1 k2 Q: B
engineering materials. It should also be useful for research students interested in revising their knowledge of the subject. The book is based on/ z5 k" k5 n+ u u: ^9 Q) _, O0 L
lectures originally given by the authors at the University of Lulel for engineerins students specializing in engineering materials. Surprisingly we
: N5 J& [1 r9 T; j2 @0 |- `( r1 _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
9 }4 c+ ]3 J/ L5 v+ [in Metals (McGraw-Hilt, 1969). There have, however, been some notable developments in the subject over the last decade, particularly in1 k5 G1 C( s3 F0 K& c7 T
studies of interfaces between phases and interface migration, as well as the kinetics of precipitate growth and the stability of precipitates. There have
2 J8 k- [8 K: c, kalso been a number of important new practical developments based on phase transformations, including the introduction of TRIP steels (transformation0 i" G/ P$ t& m7 W
induced by plastic deformation). directionally aligned eutectic composites. and sophisticated new structural steeIs with superior weldability
- s4 O" y4 h* {6 ~3 |0 A6 Land forming properties. to mention just a few. In addition. continuous casting and high speed, high energy fusion welding have emerged strongly in
5 ~8 f7 w8 K: ] w# u& W8 rrecent years as irnportan t production applications of solidification. It was the objective of this course to present a treatment of phase transformations in
+ r% n+ x& d) pwhich these and other new developments could be explained in terms of the basic principles of thermodynamics and atomic mechanisms. |
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