EFFECT OF Cr AND Al CONTENT ON THE STACKING FAULT ENERGY IN γ-Fe-Mn ALLOYS
来源期刊：Acta Metallurgica Sinica2003年第3期
论文作者：Y.S.Zhang X.TIAN
Key words：stacking fault energy; thermodynamics; antiferromagnetic transition;
Abstract: The effects of Cr and Al content were investigated on the stacking fault energy in austenitic Fe-31Mn-(0-7.26)Cr-0.96C and Fe-31Mn-(0-8.68)Al-0.85C alloys by the thermodynamic analysis. The results show that the additions of chromium or aluminum increase the non-magnetic component of the stacking fault energy in the γ-FeMn alloys, and the effect of aluminum is larger than that of chromium. The change in the magnetic entropy caused in the antiferromagnetic transition increases the free energy difference between the γ and ε phases in the γ-Fe-Mn alloys. The effects of chromium and aluminum on the magnetic component were discussed on the basis of the influence of both upon the antiferromagnetic transition in the γ-Fe-Mn alloys.
Y.S.Zhang1，X.TIAN1
(1.Department of Materials Science & Engineering, Dalian Railway Institute, Dalian,116028, China)
Abstract:The effects of Cr and Al content were investigated on the stacking fault energy in austenitic Fe-31Mn-(0-7.26)Cr-0.96C and Fe-31Mn-(0-8.68)Al-0.85C alloys by the thermodynamic analysis. The results show that the additions of chromium or aluminum increase the non-magnetic component of the stacking fault energy in the γ-FeMn alloys, and the effect of aluminum is larger than that of chromium. The change in the magnetic entropy caused in the antiferromagnetic transition increases the free energy difference between the γ and ε phases in the γ-Fe-Mn alloys. The effects of chromium and aluminum on the magnetic component were discussed on the basis of the influence of both upon the antiferromagnetic transition in the γ-Fe-Mn alloys.
Key words:stacking fault energy; thermodynamics; antiferromagnetic transition;
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