【作者】 王庆良； 强颖怀； 张恒； 赵欣； 陈辉；

【Author】 Wang Qingliang;Qiang Yinghuai;Zhang Heng;Zhao Xin;Chen Hui;School of Material Science and Engineering, China University of Mining and Technology;Baosteel Special Steel Co., Ltd.;

【机构】 中国矿业大学材料科学与工程学院； 宝钢特钢有限公司；

【摘要】 选用热轧中锰耐磨钢为实验材料,Hardox马氏体耐磨钢为对比材料,在M2000多功能摩擦磨损试验机上研究了冲击和滚动滚复合摩擦磨损性能,利用XRD、SEM和TEM等分析了组织转变及磨损机理。实验结果表明,热轧中锰钢比Hardox马氏体耐磨钢表现出更好的抗冲滚磨料磨损性能。冲滚磨损表面存在厚度达1000μm的硬化层,最高显微硬度达490HV,洛氏硬度达53HRC,加工硬化十分显著。位错强化、形变孪晶和马氏体相变是中锰钢硬化和抗磨损性能改善的主要原因,其磨损机制以凿削破坏为主,伴随局部的疲劳剥落破坏。更多还原

【Abstract】 Hot rolling medium manganese steel and Hardox martensite steel were selected as the testing material in this paper. The impact-rolling composite wear properties of these steels were studied in the experimental machine of M2000. XRD, SEM and TEM were used to investigate the structural transformation and wear mechanism of medium manganese steel. The results show that the hot rolled medium manganese steel reveals the better resistance to impact-rolling composite wear properties compared with the Hardox martensite wear resistant steel in these testing conditions. Approximately 1000μm hardened layer in thickness is formed in worn subsurface. The highest Vivtorinox hardness is about 490 HV. And the highest Rockwell hardness is about 53 HRC. The work hardening is very significant. Dislocation strengthening, deformation twinning and martensitic transformation are the main reasons to improve the work hardening and wear resistance for hot rolled medium manganese steel. The drilling wear and fatigue fracture were the main wear mechanisms.更多还原