1215MS易切削钢中组织与硫化物分析  

Analysis on Structure and Sulfide in 1215MS Free Cutting Steel

作　　者：王高峰 李成良 张志明 张盼盼 付建勋 Wang Gaofeng;Li Chengliang;Zhang Zhiming;Zhang Panpan;Fu Jianxun(Center for Advanced Solidification Technology(CAST),School of Materials Science and Engineering,Shanghai University,Shanghai 200444;Manufacturing Department,SGIS Songshan Co Ltd,Shaoguan 512123)

机构地区：[1]上海大学材料科学与工程学院先进凝固技术中心,上海200444 [2]广东韶钢松山股份有限公司特钢制造部,韶关512123

出　　处：《特殊钢》2020年第4期64-67,共4页Special Steel

基　　金：国家自然科学基金项目(51874195,51671124)资助。

摘　　要：采用光学显微镜、扫描电镜及能谱、显微硬度测量仪以及热力学软件Thermo-Calc对1215MS易切削钢Φ12 mm盘条金相组织及硫化物夹杂进行了相组成及粒径与硬度解析。结果表明:1215MS钢中铁素体所占比例93%~96%,珠光体比例4%~5%;铁素体平均等效直径为22.30μm,珠光体的平均直径为16.83μm,硫化物均匀分布在晶界的边缘和铁素体中,硫化物的当量直径为5.077μm;MnS的平均维氏硬度值为80 HV10,铁素体硬度值为100 HV10,珠光体硬度值为175 HV10。Analysis of phase compsition,particle size and hardness of metallographic structure and sulfide inclusions in 1215 MS free cutting steel Φ12 mm coil are carried out by means of optical microscope,scanning electron microscope with energy dispersive spectrometer,microhardness tester and thermdynamic software Thermo-Calc.The results show that,the proportion of ferrite in 1215 MS steel is 93% ~ 96%,and the proportion of pearlite is 4% ~5%;the average equivalent diameter of ferrite is 22.30 μm,the average diameter of pearlite is 16.83 μm,sulfide is evenly distributed in the edge of grain boundary and the ferrite,the equivalent diameter of sulfide is 5.077 μm,the average Vickers hardness of MnS,ferrite,and pearlite is 80 HV10,100 HV10,175 HV10,respectively.

关 键 词：易切削钢1215MS 铁素体 珠光体 硫化物 

分 类 号：TG142.1[一般工业技术—材料科学与工程]