Thermodynamic calculation of stacking fault energy of the Fe-Mn-Si-C high manganese steels

被引：68

作者：

Xiong, Renlong ^{[1
]}

Peng, Huabei ^{[1
]}

Si, Haitao ^{[1
]}

Zhang, Wanhu ^{[1
]}

Wen, Yuhua ^{[1
]}

机构：

[1] Sichuan Univ, Coll Mfg Sci & Engn, Chengdu 610065, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 598卷

基金：

中国国家自然科学基金;

关键词：

High manganese steels; Stacking fault energy; Thermodynamic model; Thermodynamic parameters; Deformation twin; Martensitic transformation; EMBEDDED-ATOM-METHOD; AUSTENITIC STAINLESS-STEELS; IRON-RUTHENIUM ALLOYS; SHAPE-MEMORY ALLOYS; MARTENSITIC-TRANSFORMATION; MECHANICAL-PROPERTIES; PHASE-DIAGRAMS; STABILITY; NITROGEN; ELEMENTS;

D O I：

10.1016/j.msea.2014.01.046

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

To determine right thermodynamic parameters in calculating the stacking fault energy (SFE) in Fe-Mn-Si-C high manganese steels, deformation mechanisms of several Fe-Mn-Si-C high manganese steels were studied, and their SFEs were calculated through thermodynamic model using two sets of parameters, respectively. The results showed that the parameters of Scientific Group Thermodata Europe (SGTE) could be used to calculate the SFE and predict the deformation mechanisms of Fe-Mn-Si-C steels properly. The addition of Si significantly lowered their SFE rise due to the increase of Mn content. The increase of C content strongly raised their SFE but lowered their SFE rise due to the increase of Mn content. When the Mn content is lower, their SEE first increased with raising Si content up to a critical value, over which they decreased with Si content. This critical value of Si dropped with the rise in Mn and C contents. The increase of Mn content had little effect on the SFE of the Fe-xMn-6Si-1C steels. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：376 / 386

页数：11

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