摘要
设计研发了360度辊压成型压路机振轮耐磨钢NM360-YLJ,研究结果表明:最佳的奥氏体化温度为870-910℃,淬火马氏体板条上分布着沿多个惯析方向析出的碳化物,宽度15-50nm,长度60-110nm,马氏体板条束内包含多个由大角度晶界构成的板条块,大角度晶界取向差主要分布在60°左右,所占比例为63.5%-66.9%,马氏体块宽度0.08-6.6μm,钢的屈服强度980-1000MPa、抗拉强度1182-1198MPa、延伸率22%-25%、表面维氏硬度值363-379HV,-40℃低温冲击功160-175J,具有良好的强韧性匹配以及辊压成型性能。
NM360-YLJ wear-resistant steel for press vibrating wheel of 360 degree roll pressing round-formed roller was designed.The results show that the optimum austenitizing temperature of steel is 870-910℃,carbides precipitated in multiple habitual directions are distributed on the martensite lath with a width of about 15-50 nm and a length of about 60-110 nm,there are several large angle grain boundary structures in quenched martensite lath bundles,and the orienta-tion difference distribution is mainly in 60°with martensite proportion 63.5%-66.9%and martensite width 0.08-6.6μm.The properties of steel are yield strength 980-1000 MPa,tensile strength 1182-1198 MPa,elongation 22%-25%,surface vickers hardness value 363-379HV and low temperature impact energy at-40℃ 160 to 175 J,better strength-toughess matching and roll pressing formed performance is obtained.
作者
刘红艳
陈子刚
邓想涛
王昭东
LIU Hongyan;CHEN Zigang;DENG Xiangtao;WANG Zhaodong(State Key Laboratory of Rolling Technology and Continuous Rolling Automation,Northeast University,Shenyang 110819;HBIS Group Hansteel Company,Handan 056015)
出处
《特殊钢》
2022年第4期88-94,共7页
Special Steel
基金
国家重点研发计划项目(2017YFB0305104)。
关键词
临界奥氏体化温度
辊压成型
压路机振轮
NM360-YLJ耐磨钢
组织与性能
Critical Austenitizing Temperature
Roll Pressing Forming
Roller Vibrating Wheel
NM360-YLJ Wear Resistant Steel
Microstructure and Properties
