Activation Energy for Isothermal Transformation to Martensite

Abstract

The activation energy for isothermal transformation to martensite has been determined for three Fe-Ni-Mn alloys. The values obtained have been correlated with others, and the predicted linear relationship between activation energy and driving force is observed. The results also suggest that the effectiveness of the martensite embryos is not very sensitive to changes in composition.

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References

Kaufman

and Cohen

, Progress Metal Physics, 1958, 7, 165.

Shih

C. H.

, Averbach

B. L.

, and Cohen

, Trans. Amer. Inst. Min. Met. Eng., 1955, 203, 183.

Lement

B. S.

, Averbach

B. L.

, and Cohen

, Trans. Amer. Soc. Metals, 1954, 46, 851.

Raghavan

and Entwisle

A. R.

, “Physical Properties of Martensite and Bainite ” (Special Rep. No. 93), 30. 1965: London (Iron Steel Inst.).

Pati

S. R.

and Cohen

, Acta Met., 1966, 14, 1001.

Imai

and Izumiyama

, Sci. Rep. Tohoku Univ., Series 4, 1965, 17, 135.

Goldman

A. J.

and Robertson

W. D.

, Acta Met., 1964, 12, 1265.

Cech

R. E.

and Hollomon

J. H.

, Trans. Amer. Inst. Min. Met. Eng., 1953, 197, 685.

Kurdjumov

G. V.

, J. Iron Steel Inst., 1960, 195, 26.