The Distribution of Retained Austenite in Martensite and the influence of Inter-lath Crystallography

H. K. D. H. Bhadeshia and D. V. Edmonds


A series of steels was examined for thin films of austenite trapped between laths/platelets of martensite. The distribution of these films was found to correlate with the inter-lath crystallography. In those steels with almost continuous films of inter-lath austenite the degree of co-operative martensite formation appeared limited. In other steels austenite could not be detected. I these steels the lath packets consisted entirely of twin-related laths. The results are analysed in terms of the degree of accommodation of transformation strains associated with the formation of adjacent martensite variants and the influence of mechanical stabilisation of residual austenite in the absence of mutually compensating accommodation effects.

Proc. Int. Conf. on Martensitic Transformations, 1979, Cambridge, Massachusetts, U.S.A., pp. 28-33

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Thesis: Theory and Significance of Retained Austenite in Steels

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