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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
6 ~3 J' I1 \/ jengineering materials. It should also be useful for research students interested in revising their knowledge of the subject. The book is based on. `% c) C4 w6 o* J6 d9 d
lectures originally given by the authors at the University of Lulel for engineerins students specializing in engineering materials. Surprisingly we+ j' Z p1 Y5 C8 ]& q
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
# o) T4 x: h7 R W iin Metals (McGraw-Hilt, 1969). There have, however, been some notable developments in the subject over the last decade, particularly in
+ x0 d# ~$ ?+ P0 J: s, Q& @studies of interfaces between phases and interface migration, as well as the kinetics of precipitate growth and the stability of precipitates. There have
# U* i( f5 r: L0 e5 Jalso been a number of important new practical developments based on phase transformations, including the introduction of TRIP steels (transformation5 F7 \5 Q+ o) `
induced by plastic deformation). directionally aligned eutectic composites. and sophisticated new structural steeIs with superior weldability. m, z/ m( r9 [
and forming properties. to mention just a few. In addition. continuous casting and high speed, high energy fusion welding have emerged strongly in: V" I* T5 o$ i# h
recent years as irnportan t production applications of solidification. It was the objective of this course to present a treatment of phase transformations in0 ~) q' m9 H) q: W9 C7 c
which these and other new developments could be explained in terms of the basic principles of thermodynamics and atomic mechanisms. |
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