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| METALLOGRAPHIC INVESTIGATION OF ISOTHERMAL MARTENSITE FORMATION IN A 1.4％C-1.4％ Cr STEEL |
| HSU TZU-YAO; TSU CHUEH-JU; WANG YUNG-YUNG(Shanghai Chiao Tung University) |
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Cite this article:
HSU TZU-YAO; TSU CHUEH-JU; WANG YUNG-YUNG(Shanghai Chiao Tung University). METALLOGRAPHIC INVESTIGATION OF ISOTHERMAL MARTENSITE FORMATION IN A 1.4％C-1.4％ Cr STEEL. Acta Metall Sin, 1964, 7(4): 437-441.
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Abstract Metallographic investigation shows that the isothermal reaction, near M_s point (100℃) in 1.4% C-1.4% Cr steel quenched from 1100℃, takes place by martensitic transformation. The major portion of the isothermal reaction occurs by the growth of existing martensite when the amount of retained austenite is less than 40%, while occurs by the formation of new plates when it is more than 50%. Isothermal martensite may form at some preferred sites of existing plates in small amount, which is independent of the amount of retained austenite. A probable explanation is suggested.
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Received: 18 April 1964
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[1] #12
[2] 张沛霖、徐萃章:金属学报,1956,1,347．
[3] Ko, T. (柯俊), Edmondson, B.: Acta Met., 1954, 2, 235．
[4] #12
[5] Das Gupta, S. C., Lement, B. S.: Trans. AIME, 1951, 191, 727．
[6] Machlin, E. S., Cohen, M.: Trans, AIME, 1952, 194, 489．
[7] Kaufman, L., Cohen, M.: Progress in Metal Physics, (Pergamon, 1958) , vol. 7, p. 235-241．! |
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