摘要
研究了添加4种不同含量Ce的5CrMnMo热作模具钢的组织及耐磨性,通过分析组织和磨痕形貌,以及平均磨损率和摩擦系数变化情况,与不添加Ce的5CrMnMo钢进行对比。结果表明:Ce添加量在适当的范围内组织得到显著细化,平均磨损率和摩擦系数有了明显下降,磨痕形貌也比较细而浅,从而使耐磨性得到有效提高。并且当Ce添加量为0.20%(质量分数)时,5CrMnMo钢的表面平均磨损量最少,耐磨性最好,其平均磨损率是不添加Ce的5CrMnMo钢的63.81%。
The microstructure and wearing resistance of 5CrMnMo hot working die steel with four different amount of additions of Ce was studied and compared with that without Ce by analyzing the microstructure, worn-out appearance, average wearing rate and friction coefficient. The results showed that when the addition of Ce was proper, the microstructure was signifi-cantly refined, the average wearing rate and friction coefficient were reduced markedly and the worn-out appearance was also relatively thin and shallow. Therefore, the wear resistance was improved effectively. When the addition of Ce is 0.20% （mass percent）, 5CrMnMo steel had the least surface average wearing quantities and the best wearing resistance. Comparing the 5CrMnMo steel without Ce, the average wearing rate of that with 0.20% Ce was decreased by 63.81%.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2008年第3期368-373,共6页
Journal of the Chinese Society of Rare Earths
关键词
铈
5CrMnMo
组织
磨痕形貌
耐磨性
稀土
cerium
5CrMnMo
structure
worn-out appearance
wear resistance
rare earths
