摘要
采用由 Nb、N、RE、Si及 Ca等组成的复合变质剂 ,制备了高耐磨、高强度及高韧性的中锰钢 ,考察了所制备的中锰钢的机械性能和摩擦磨损性能 .结果表明 ,变质中锰钢的耐磨性是中锰钢的 1.92倍 ,强度是中锰钢的 1.45倍 ,韧性是中锰钢的 3.6 3倍 .运用弹塑性力学计算和扫描电子显微镜 ,分析了变质中锰钢的塑变磨损机理 ,建立了变质中锰钢的耐磨性与屈服强度的关系 .经验证 。
Medium manganese steel of high wear resistance, high strength, and high toughness was prepared by using a complex modifier composed of Nb, N, RE, and Si Ca. The mechanical and tribological properties of the steel were investigated. The wear mechanism of the steel characterized by plastic deformation was investigated by means of plastic elasticity calculation and transmission electron microscopic observation. The relation between the wear resistance and yield strength of the modified medium manganese steel was then established. The results show that the wear resistance, strength, and toughness of the modified medium manganese steel are 1.92 times, 1.45 times, and 3.63 times of that of the unmodified medium manganese steel, respectively. The calculated wear rate of the modified steel roughly agrees with the testing result. Thus the increased wear resistance of the modified medium manganese steel is attributed to the considerably increased yield strength and the work for initiation and propagation of cracks.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2001年第6期434-438,共5页
Tribology
基金
河南省科技攻关项目 ( 971110 30 3)
关键词
变质中锰钢
塑性变形
磨损
屈服强度
modified medium manganese steel
plastic deformation
wear
yield strength
