Al元素对Fe-Mn-Al-C钢微观组织和力学性能的影响  

Effects of element Al on microstructure and mechanical performance of Fe-Mn-Al-C steel

作　　者：喇培清[1] 汪科良 王力[1] 盛捷[1] 石玉 李正宁[1] LA Pei-qing, WANG Ke-liang, WANG Li, SHENG Jie, SHI Yu, LI Zheng-ning(State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, Chin)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《兰州理工大学学报》2018年第3期1-5,共5页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51561020)

摘　　要：使用中频感应炉在大气环境下熔炼不同Al质量分数的Fe-Mn-Al-C钢,利用XRD,OM和EPMA分析不同Al质量分数下Fe-Mn-Al-C钢的显微组织,并对其力学性能进行测试.结果表明:中锰钢由铁素体和奥氏体2相及少量碳化物组成,随着Al质量分数的增多,铁素体的体积分数增大.且不同Al质量分数下奥氏体中都有C元素的富集.另外,Al质量分数为6%、8%、10%的中锰钢的硬度分别为267、330、323HV.合金的强度和塑性都随着Al质量分数的增多而降低,且合金实测强度远低于由经验公式计算得到的理论强度值,合金塑性较差.Fe-Mn-Al-C steel with different mass-fractions of Al was smelted in medium-frequency induction furnace in atmospheric environment.XRD,OM and EPMA were used to analyze its microstructure and test its mechanical performance.The result showed that the Fe-Mn-Al-C medium-manganese steel would mainly consist of ferrite and austenite phases and the ferrite volume fraction would increase with the mass-fraction of Al.The C element would be enriched in the austenite under different conditions of Al masfraction.In addition,the hardness of the medium-manganese steel with Al mass-fraction of 6%,8%,and10% would be 267,330,and 323 HV,respectively.The strength and plasticity of the medium-manganese steel would decrease with the mass-fraction of Al,and the measured strength would greatly be lower than the theoretical strength calculated with empirical formula.The alloy would have a poor plasticity.

关 键 词：中锰钢 Al质量分数 显微组织 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]