奥氏体与马氏体耐磨钢磨损性能及机理的研究

Comparative Study on Wear Properties and Wear Mechanism of Austenite and Martensite Wear-Resistant Steel

采用M-2000多功能摩擦磨损试验机,对奥氏体型耐磨钢(奥氏体中锰钢、Mn13)及马氏体型耐磨钢(HARDOX400、HARDOX500、JFE-EH450)分别进行了200 N、600 N载荷下的干摩擦与石英砂摩擦实验,对比研究了各耐磨钢的磨损性能及磨损机理。实验结果表明,在4种摩擦条件下,中锰钢的耐磨性最好,且随着载荷的增加,中锰钢的亚表层硬度随之上升。在干摩擦实验条件下,5种耐磨钢的磨损机理主要为疲劳磨损,添加石英砂磨料后,5种耐磨钢的磨损机理主要为磨粒磨损并伴随着疲劳剥落。

Using M-2000 multi-functional friction and wear tester,Austenitic wear-resistant steels and Martensitic wear-resistant steels were conducted the dry friction and quartz sand friction experiments under 200 N and 600 N loads respectively compared the wear performance and wear mechanism of various wear-resistant steels.The experimental results show that the wear resistance of Medium Manganese steel is the best under four friction conditions,and the subsurface hardness of Medium Manganese steel increases with the increase of the load.Under the conditions of dry friction experiments,the wear mechanism of the five wear-resistant steels is mainly fatigue wear.With adding quartz sand abrasives,the wear mechanism of the five wear-resistant steels is mainly abrasive wear and accompanied by fatigue spalling.