Cubic to Orthorhombic Diffusionless Phase Change— Experimental and Theoretical Studies of AuCd
作者:
D. S. Lieberman,
M. S. Wechsler,
T. A. Read,
期刊:
Journal of Applied Physics
(AIP Available online 1955)
卷期:
Volume 26,
issue 4
页码: 473-484
ISSN:0021-8979
年代: 1955
DOI:10.1063/1.1722021
出版商: AIP
数据来源: AIP
摘要:
A theoretical analysis of the cubic to orthorhombic transformation is presented which predicts for a partly transformed crystal, the interface plane, orientation relationships, and macroscopic distortions from a knowledge only of the lattice parameters of the initial and final phases. Arguments are advanced to show that in order to minimize the strain energy associated with the transformation, the interface plane must be one of zero average distortion. This leads directly to considerations of an inhomogeneous product phase. Experimental studies on an AuCd alloy are described and the observed crystallographic features of the transformation compared with values calculated using the theory. The agreement between calculated and observed results for this alloy system as well as others is strong evidence for the theory of diffusionless phase transformations presented.
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