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Acta Metall Sin  1981, Vol. 17 Issue (2): 185-195    DOI:
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ON THE ORIENTATION RELATIONSHIP BETWEEN TRANSFORMATION PRODUCT AND PARENT PHASE
Wang Guijin (Central Iron and Steel Research Institute;Ministry of Metallurgical Industry)Kang Zhenchuan (Beijing Institute of Metallurgy Research) and Zhao Buolin (Beijing Institute of Iron and Steel Technology)
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Wang Guijin (Central Iron and Steel Research Institute;Ministry of Metallurgical Industry)Kang Zhenchuan (Beijing Institute of Metallurgy Research) and Zhao Buolin (Beijing Institute of Iron and Steel Technology). ON THE ORIENTATION RELATIONSHIP BETWEEN TRANSFORMATION PRODUCT AND PARENT PHASE. Acta Metall Sin, 1981, 17(2): 185-195.

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Abstract  The cell volume V~((0)) of fcc/bcc and fee/bet has been calculated for three orientation relationships. The orientation will be acceptable if its V~((0)) is larger than others, and everyone has its own range of lattice parameter ratio. Then the lower energy 0 lattice will appear when γ gets some particular value. It is suggested that the γ value can be changed locally by segregating or depleting solute atoms near boundary so that the density of dislocation on boundary can be decreased. The Zn segregation in α/β brass would be explained with this mode.It is shown that the magnitude and direction of tetragonal distortion affect the V~((0)) considerably. It will be expected to predict the reasonable distortion direction if the orientation and the lattice parameter are given. But the fact that the orientation relationship between austenite and martensite in Fe-C alloy changes from K-S to N-W can be explained satisfyingly if it is suggested that carbon atoms move to transformation interface along <11(?)>_f direction.
Received:  18 February 1981     
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