铝、铜、铬合金元素对Fe-21Mn-0.4C TWIP/TRIP钢层错能和力学性能的影响  

Effect of Aluminium,Copper and Chromium on the Stacking Fault Energy and Mechanical Properties of Fe-21Mn-0.4C TWIP/TRIP Steel

作　　者：代永娟[1] 米振莉[2] 唐荻[2] 吕建崇[2] 

机构地区：[1]河北科技大学材料科学与工程学院,河北石家庄0500182 [2]北京科技大学高效轧制国家工程中心,北京100083

出　　处：《钢铁研究学报》2011年第4期32-36,51,共6页Journal of Iron and Steel Research

基　　金：国家高技术研究发展计划(863计划)基金(2008AA03E502);河北科技大学校立科研基金(XL201001)

摘　　要：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。Based on bibliographic data,the thermochemical model of stacking fault energy（SFE） in Fe-Mn-C system was presented.Using the model SFE of Fe-21Mn-0.4C with few percent of Aluminium,Copper and Chromium in addition was calculated.The SFE increases with the content of Aluminium and copper,contrary to chromium.The SFE of Fe-21Mn-0.4C alloy was effected by its phase composition： when the SFE is below 10.7mJ/m2,its phases are γ＋ε,while the SFE is 10-19.02mJ/m2,its phases are γ＋ε＋a,as long as the SFE is greater than 19.02mJ/m2,it is full of austenite.The change of SFE of Fe-21Mn-0.4C with few percent of Aluminium,Copper and Chromium in addition is not accordance with mechanical properties changes,more factors effect mechanical properties of Fe-21Mn-0.4C alloys,furthermore study is needed.

关 键 词：层错能 Fe-21Mn-0.4C合金 合金元素 力学性能 

分 类 号：TG142.15[一般工业技术—材料科学与工程]