高锰无磁钢的残余磁性分析  

Analysis of the residual magnetism in non-magnetic high manganese steel

作　　者：汤波 

机构地区：[1]湖南省冶金材料研究院,湖南长沙410129

出　　处：《粉末冶金工业》2017年第3期72-75,共4页Powder Metallurgy Industry

摘　　要：高锰无磁钢因其无磁性和优异的力学性能在电力、交通、航空航天和国防等领域占据重要地位,然而实际生产中的高锰无磁钢经常被发现无磁性不佳。采用光学显微镜和XRD衍射仪研究高锰钢铸态和热处理后的显微组织和物相成分,并测定其相对磁导率,对比分析高锰无磁钢产生磁性的原因。结果表明,1 200℃热处理后的样品几乎完全奥氏体化,残余莱氏体含量较低,无磁性能较好。High manganese non-magnetic steel plays an important role in the fields of electric power,transportation,aerospace and national defense because of its non magnetism and excellent mechanical properties. However,the non magnetism of the steel is not good in the actual production. The microstructure,phase composition of high manganese steel were studied using optical microscope and X-ray diffractometer,and the relative permeability of the steel was measured. The cause of residual magnetism for high manganese steel was analyzed. Results show that the samples after heat treatment at 1 200 ℃ are almost completely austenite,the content of residual ledeburite is low,and the non magnetism properties are better.

关 键 词：高锰无磁钢 残余磁性 微观组织 

分 类 号：TG142.12[一般工业技术—材料科学与工程] TG161[金属学及工艺—金属材料]