奥氏体化温度对辗压圈圆成型NM360-YLJ耐磨钢组织与性能的影响

特殊钢 ›› 2022, Vol. 43 ›› Issue (4): 88-94.

奥氏体化温度对辗压圈圆成型NM360-YLJ耐磨钢组织与性能的影响

刘红艳^1,2,陈子刚²,邓想涛¹,王昭东¹

1东北大学轧制技术及连轧自动化国家重点试验室，沈阳110819；<br /> 2河钢集团邯钢公司，邯郸056015

收稿日期:2021-12-21 出版日期:2022-08-01 发布日期:2022-08-21
作者简介:刘红艳(1983-),女，博士研究生(东北大学)，河北省“三三三人才工程”第二层次人选,1 100 - 2 000 MPa超高强韧钢的研发与应用。
基金资助:
国家重点研发计划项目(2017YFB0305104)

Effect of Austenitizing Temperature on Microstructure and Properties of Roll Pressing Round Formed NM360-YLJ Wear Resistant Steel

LIU Hongyan^1.2, CHEN Zigang², DENG Xiangtao², WANG Zhaodong¹

1 State Key Laboratory of Rolling Technology and Continuous Rolling Automation, Northeast University,Shenyang 110819 ；
2 HBIS Group Hansteel Company, Handan 056015

Received:2021-12-21 Published:2022-08-01 Online:2022-08-21

摘要/Abstract

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15～50 mm,长度60～110 mm,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980～1 000 MPa、抗拉强度1 182～1 198 MPa、延伸率22%～25%、表面维氏硬度值363～379HV, -40℃低温冲击功160～175 J,具有良好的强韧性匹配以及辊压成型性能。

Abstract: 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 T , carbides precipitated in multiple habitual directions are distributed on the martensite lath with a width of about 15 ~ 50 mm and a length of about 60-110mm, there are several large angle grain boundary structures in quenched martensite lath bundles, and the orientation difference distribution is mainly in 60° with martensite proportion 63. 5% ~ 66. 9% and martensite width 0. 08 ~ 6.6 μm. The properties of steel are yield strength 980 〜1 000 MPa, tensile strength 1 182 〜1 198 MPa, elongation 22% ~25% , surface vickers hardness value 363 ~379HV and low temperature impact energy at -40°C 160 to 175 J, better strength-toughess matching and roll pressing formed performance is obtained.

刘红艳, 陈子刚, 邓想涛, 王昭东. 奥氏体化温度对辗压圈圆成型NM360-YLJ耐磨钢组织与性能的影响[J]. 特殊钢, 2022, 43(4): 88-94.

LIU Hongyan, CHEN Zigang, DENG Xiangtao, WANG Zhaodong. Effect of Austenitizing Temperature on Microstructure and Properties of Roll Pressing Round Formed NM360-YLJ Wear Resistant Steel[J]. Special Steel, 2022, 43(4): 88-94.

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