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参考文献建立了Fe-Mn-C合金层错能的热力学模型,用模型计算了铝、铜、铬元素对Fe-21Mn-0.4C合金层错能的影响规律;在Fe-21Mn-0.4C合金中添加合金元素,研究其对层错能的影响。研究结果表明:铝和铜增加合金的层错能,而铬则降低合金的层错能;当层错能低于10.7 mJ/m2时,Fe-21Mn-0.4C合金相组成为γ+ε,当层错能为10~19.02 mJ/m2时,合金的相组成为γ+ε+a,当层错能高于19.02 mJ/m2时,合金的相组成为单相的γ;层错能的变化和添加了合金元素铝、铜、铬的Fe-21Mn-0.4C合金性能变化没有相一致的关系,说明影响Fe-21Mn-0.4C合金力学性能的因素很多,需要进一步的研究。
The thermodynamic model of the stacking fault energy of Fe-Mn-C alloy was established by reference. The influence of Al, Cu and Cr on the layer stacking error of Fe-21Mn-0.4C alloy was calculated by the model. In the addition of alloying elements to study its impact on the stacking fault energy. The results show that the aluminum and copper increase the stacking fault energy of the alloy, while the chromium reduces the stacking fault energy of the alloy. When the stacking fault energy is lower than 10.7 mJ / m2, the phase composition of the Fe-21Mn-0.4C alloy is γ + ε, When the stacking fault energy is 10 ~ 19.02 mJ / m2, the phase composition of the alloy is γ + ε + a. When the stacking fault energy is higher than 19.02 mJ / m2, the phase composition of the alloy is single-phase γ; There is no consistent relationship between the change and the addition of Fe-21Mn-0.4C alloying elements aluminum, copper and chromium, indicating that there are many factors affecting the mechanical properties of Fe-21Mn-0.4C alloy, and further research is needed.