ABSTRACT
A martensitic transformation is one which takes place by shear, a cooperative, nondiffusional, nonthermally activated process, which permits such a transformation to accomplish a change in crystal structure but not in composition or in degree of ordering (for substitutional solid solutions). Some references for this chapter are Cohen in Phase Transformations in Solids, Wiley, New York, 1951, p. 588 [1]; for thermodynamics and kinetics, Kaufman and Cohen, Prog. Met. Phys., 7, 165 (1958) [2]; for nucleation, Magee in Phase Transformations, ASM, Metals Park, OH, 1970, p. 115 [3]; for general aspects with emphasis on crystallography, Christian, The Theory of Transformations in Metals and Alloys, Wiley, New York, 1962 [4]; for crystallography, Lieberman, in Phase Transformations, ASM, Metals Park, OH, 1970, p. l. [5]; Wayman, Adv. Mater. Res., 3, 147 (1968) [6]; Wayman, Introduction to the Crystallography of Martensitic Transformations, MacMillan, New York, 1964 [7].
