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| ON THE CALCULATION OF DRIVING FORCE FOR MARTENSITE TRANSFORMATION AND M_s IN Fe-Ni-C ALLOYS |
| by LI Jian; XU Zuyao (T.Y. Hsu) (Shanghai Jiaotong University) (Manuscript received 17 February; 1985) |
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Cite this article:
by LI Jian; XU Zuyao (T.Y. Hsu) (Shanghai Jiaotong University) (Manuscript received 17 February; 1985). ON THE CALCULATION OF DRIVING FORCE FOR MARTENSITE TRANSFORMATION AND M_s IN Fe-Ni-C ALLOYS. Acta Metall Sin, 1987, 23(4): 321-328.
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Abstract The driving force for martensite transformation,-△G_(M_S)~(γ→α)(=△G~(α→M)) has been evaluated using three different thermodynamic methods, namely, LFG method, Hsu method and the authors' method. The results show that the relationship between driving force and σ_(0.2)(M_s) can be expressed as: AG~(α→M)=A'σ(M_s)+908 J/mol wher eA' is a constant which slightly deviated for different methods. The M_s temperatures of Fe-Ni-C alloys have been calculated, and the results of calculation are in good agreement with the previous experimental values.
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Received: 18 April 1987
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