Abstract
The effect of austenite yield strength on the transformation to martensite was investigated in Fe-10 pct Ni-0.6 pct C alloys. The strength of the austenite was varied by 1) additions of yttrium oxide particles to the base alloy and 2) changing the austenitizing temperature. The austenite strength was measured at three temperatures above theM s temperature and the data extrapolated to the experimentally determinedM s temperature. It is shown that the austenite yield strength is determined primarily by the austenite grain size and that the yttrium oxide additions influence the effect of austenitizing temperature on grain size. As the austenite yield strength increases, both theM s temperature and the amount of transformation product at room temperature decrease. The effect of austenitizing temperature on the transformation is to determine the austenite grain size. The results are consistent with the proposal1 that the energy required to overcome the resistance of the austenite to plastic deformation is a substantial portion of the non-chemical free energy or restraining force opposing the transformation to martensite.
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References
E. M. Breinan and G. S. Ansell:Met. Trans., 1970, vol. 1, p. 1513.
R. G. B. Yeo:Trans. TMS-AIME, 1963, vol. 227, p. 884.
H. R. Woehrle, W. R. Clough, and G. S. Ansell:Trans. ASM, 1966, vol. 59, p. 784.
A. S. Sastri and D. R. F. West:J. Iron Steel Inst., 1965, vol. 203, p. 138.
O. A. Ankara and D. R. F. West:J. Iron Steel Inst., 1965, Special Report No. 93, p. 183.
O. A. Ankara, A. S. Sastri, and D. R. F. West:J. Iron Steel Inst., 1966, vol. 204, p. 509.
O. A. Ankara:J. Iron Steel Inst., 1970, vol. 208, p. 819.
M. R. Meyerson and S. J. Rosenberg:Trans. ASM, 1954, vol. 46, p. 1225.
E. S. Machlin and M. Cohen:Trans. AIME, 1951, vol. 191, p. 746.
A. R. Entwisle and J. Feeney:Inst. of Metals Monograph, no. 33, 1968, p. 156.
M. Umemoto and W. S. Owen:Met. Trans., 1974, vol. 5, p. 2041.
J. E. Hilliard:Metal Prop., 1964, vol. 86, p. 99.
R. L. Miller:Trans. ASM, 1964, vol. 57, p. 892.
T. Wada, H. Wada, J. F. Elliott, and J. Chipman:Met. Trans., 1971, vol. 2, p. 2199.
M. M. Rao, R. J. Russell, and P. G. Winchell:Trans. TMS-AIME, 1967, vol. 239, p. 634.
C. L. Magee and R. G. Davies:Acta Met., 1971,vol. 19,p.345.
S. J. Donachie and G. S. Ansell:Met. Trans. A, 1975, vol. 6A, p. 1863.
R. G. Davies and C. L. Magee:Met. Trans., 1970, vol. 1, p. 2927.
R. G. Davies and C. L. Magee:Met. Trans., 1971, vol. 2, p. 1939.
M. Laverroux and A. Pineau:Scr. Met., 1974, vol. 8, p. 351.
W. J. Harris and M. Cohen:Trans. AIME, 1949, vol. 180, p. 447.
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Nichol, T.J., Judd, G. & Ansell, G.S. The relationship between austenite strength and the transformation to martensite in Fe-10 pct Ni-0.6 pct C alloys. Metall Trans A 8, 1877–1883 (1977). https://doi.org/10.1007/BF02646560
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DOI: https://doi.org/10.1007/BF02646560