退火态超高碳耐磨钢的组织与性能  

Microstructure and Performances of Annealed Ultra-high Carbon Wear-Resistant Steel

作　　者：孙梦菊 张所全 张春风 陈静[1] 李红斌 刘文庆[1] SUN Mengju;ZHANG Suoquan;ZHANG Chunfeng;CHEN Jing;LI Hongbin;LIU Wenqing(School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China;Research Institute,Baoshan Iron and Steel Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]宝山钢铁股份有限公司研究院,上海201900

出　　处：《上海金属》2024年第2期53-56,共4页Shanghai Metals

摘　　要：将含1.6%C(质量分数)的超高碳钢在1150℃奥氏体化后进行两次轧制,开轧温度分别为900和750℃,随后炉冷至室温。使用光学显微镜、原子探针层析技术、磨损试验机和拉伸试验等研究了退火态超高碳钢的组织和性能,并与500 HB级耐磨钢进行对比。结果表明:退火态超高碳钢与500 HB级耐磨钢的耐磨性接近,但前者的硬度较低、断后伸长率较高。退火态超高碳钢组织为铁素体基体和粒状渗碳体,其良好的耐磨性主要源于大量硬质渗碳体颗粒阻碍了磨粒对材料的磨损。The ultra-high Carbon steel containing 1.6%C by mass was austenitized at 1150℃,twice rolled at 900 and 750℃,respectively,and then furnace cooled to room temperature.The microstructure and properties of the annealed ultra-high carbon steel were studied by optical microscope,atomic probe tomography,wear tester and tensile test,and compared with those of the 500 HB grade wear-resistant steel.The results showed that the wear resistance of the annealed ultra-high carbon steel was similar to that of 500 HB grade wear-resistant steel,while the former had lower hardness and higher elongation.The microstructure of the annealed ultra-high carbon steel was composed of ferrite matrix and granular cementite.Its good wear resistance was mainly due to the large amount of hard cementite particles hindering the material being worn by the abrasive particles.

关 键 词：超高碳钢 耐磨性能 耐磨机制 渗碳体 

分 类 号：TG142.1[一般工业技术—材料科学与工程]