金属学报  1984, Vol. 20 Issue (3): 151-161

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Fe-C合金M_s的热力学计算及马氏体相变驱动力

徐祖耀;张鸿冰;罗守福

上海交通大学;上海交通大学;上海冶金专科学校;上海交通大学

ON THERMODYNAMIC CALCULATION OF Ms AND ON DRIVING FORCE FOR MARTENSITIC TRANSFORMATION IN Fe-C

XU Zuyao(T. Y. Hsu); ZHANG Hongbing; LUO Shoufu (Shanghai Jiaotong University) (Manuscript received 7 February; 1983)

徐祖耀;张鸿冰;罗守福. Fe-C合金M_s的热力学计算及马氏体相变驱动力[J]. 金属学报, 1984, 20(3): 151-161.
, , . ON THERMODYNAMIC CALCULATION OF Ms AND ON DRIVING FORCE FOR MARTENSITIC TRANSFORMATION IN Fe-C[J]. Acta Metall Sin, 1984, 20(3): 151-161.

摘要 参考文献 相关文章 Metrics 全文: PDF(870 KB)   摘要: 为适合电子计算机进行计算,本文将各学者的ΔG_(Fe)~(γ→α)值公式化。应用各种ΔG~(γ→α)的计算模型,如经修正的Fisher,KRC和LFG模型,引入不同的ΔG_(Fe)~(γ→α)值,计算得到Fe-C合金的M_s温度。经比较后发现:M_s的计算值不仅取决于ΔG~(γ→α)的计算模型,而且极大地依赖于ΔG_(Fe)~(γ→α);若按照LFG模型并取Mogutnov的ΔG_(Fe)~(γ→α)值,和按照徐祖耀模型并取Kaufman的ΔG_(Fe)~(γ→α)值,计算所得结果均与M_s的实验值吻合得很好,而徐祖耀模型要比普遍公认的LFG模型简单得多。本文较精确地测定了x_C=0.01—0.05 Fe-C合金的M_s值,它们与Kaufman等人(1962)给出的数据很好吻合。Greninger所得x_C=0.06的M_s实验值看来是偏高的。驱动力的计算值不仅依赖于ΔG~(γ→α)的计算模型,而且还极大地取决于ΔG_(Fe)~(γ→α)值以及所选用的M_s值。计算表明:随含碳量的增加,相变驱动力将单调地增大。 Abstract：In order to suit the calculation with computer, △G_(Fe)~(γ-α) from various authors are formulated. Ms from various △G_(Fe)~(γ-α) and different models for evaluation of △G_(Fe)~(γ-α), e. g. refined Fither, KRC, LFG and Hsu's are obtained. Comparison is made among these results. The calculated Ms depends on not only the evaluation model of △G~(γ-α) but also △G_(Fe)~(γ-α). Both LFG treatment with △G_(Fe)~(γ-α) from Mogutnov and Hsu's model with △G_(Fe)~(γ-α) from Kaufman et al. are in good agreement with the experimental M_s. However Hsu's model is much simpler than the general accepted LFG's M_s of Fe-C with x_c=0.01 to 0.05 are detected rather accurately and they are consistent with that given by Kaufman et al. Ms of Fe-C with x_c=0.06 by Greninger seems too high. The calculated driving force depends on not only the evaluation model of △G~(γ-α) but also mainly △G_(Fe)~(γ-α) and M_s adopted. It is more likely that the driving force increases with the increament of carbon content. 收稿日期: 1984-03-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 徐祖耀 张鸿冰 罗守福 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I3/151 1 Xu Zuyao (T. Y. Hsu, 徐祖耀), Shanghai Jiao Tong University Treatise, Ⅰ, 1981, MS-003． 2 Fisher, J.C., Trans. AIME 185 (1949) , 688． 3 Kaufman, L.; Radcliffe, S. V.; Cohen, M., Decomposition of Austensite by Difusional Processes, Eds. Zackay, V.F.; Aaronson, H.I., Interscience Publ. 1962, p.313． 4 Fowler, R.H.; Guggenheim, E.A., Statistical Thermodynamics, New York, Cambridge University Press, 1939． 5 徐祖耀,金属学报,15(1979) ,329． 6 Kaufman, L.; Clougherty, E. V.; Weiss, R.J., Acta Metall., 11 (1963) , 323． 7 Orr, R. L.; Chipman, J., Trans. Metall. Soc. AIME, 239 (1967) , 630． 8 Mogutnov, B.M.; Tomilin, I. A.; Shvarsman, L.A., Thermodynamics of Fe-C Alloys, Metallurgy Press, Moscow, 1972, p.110． 9 Agren, J., Metall. Trans., 10A (1979) , 1847． 10 Greninger, A.B., Trans. ASM, 30 (1942) , 1． 11 Bhadeshia, H.K.D.H., Meta Sci., 15 (1981) , 175． 12 Lobo, J. A.; Geiger, G. H., Metall. Trans., 7A (1976) , 1347． 13 Lobo, J.A.; Geiger, G.H., Metall. Trans., 7A (1976) , 1359． 14 Bell, T.; Owen, W.S., Trans. Metall. Soc. AIME, 239 (1967) , 1940． 15 Zener, C., Trans. AIME, 167 (1946) , 513． 16 Shiflet, G.J.; Bradley, J.R.; Aaronson, H.I., Metall. Trans., 9A (1978) , 999． 17 Lacher, J.R., Proc. Cambridge Phils. Soc., 33 (1937) , 518． 18 McLellan, R.B.; Garrard, T. L.; Horowitz, S. J.; Sprague, J.A., Trans. Metall. Soc. AIME, 239(1967) , 528． 19 Aaronson, H.I.; Domain, H.A.; Pound, G.M., Trans. Metall. Soc. AIME, 236 (1966) , 753． 20 Bhadeshia, H.K.D.H., Met. Sci., 14 (1980) , 230．f No related articles found! Viewed Full text Abstract Cited   Shared      Discussed