Carbon content of retained austenite in quenched steels

H. K. D. H. Bhadeshia


Much effort has recently been directed towards the determination of the carbon concentration of retained austenite in directly quenched, or quenched and tempered martensitic steels. The results show that the concentration may be significantly larger than the average concentration in the alloy concerned. The interpretation of such data is difficult, but the present paper is concerned with the possibility that some redistribution of carbon may occur during the transformation of austenite to what is generally referred to as lath martensite. Thermodynamic analysis has been used to show that the experimental data are not consistent with diffusion occurring during transformation.

Metal Science, Vol. 17, 1983, pp. 151-152.

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