Mg对35Cr2Ni2Mo耐磨铸钢组织与性能的影响  

Effect of Mg on the Microstructure and Properties of 35Cr2Ni2Mo Wear Resistance Cast Steel

作　　者：杨祎 张朋彦 董陈 孙爱民 张超 张颢 YANG Yi;ZHANG Pengyan;DONG Chen;SUN Aimin;ZHANG Chao;ZHANG Hao(School of Metallurgical Engineering,Anhui University of Technology,Maanshan 243032,China;Maanshan Haitian Heavy Industry Technology Development Co.,Ltd.,Maanshan 243131,China)

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243032 [2]马鞍山市海天重工科技发展有限公司,安徽马鞍山243131

出　　处：《铸造技术》2023年第11期1029-1035,共7页Foundry Technology

基　　金：安徽省重点研发计划(202104a05020020)。

摘　　要：在现代化装备制造业高速发展的同时,材料磨损所导致的资源消耗与经济损失日益显著。耐磨铸钢的研究与进步,不仅有助于提高生产效率、减少资源浪费和降低经济损失,更在推动科技进步和装备制造业发展方面发挥着积极作用。本文在35Cr2Ni2Mo铸钢中添加Mg元素,为新型高性能耐磨铸钢的推广应用提供了研究基础。采用金相显微镜、扫描电镜、透射电镜观察了钢材的显微组织,利用显微硬度计和拉伸试验机分别测定了钢材的硬度和力学性能,利用摩擦磨损试验机测定了钢材的耐磨性能。结果表明,添加Mg元素后,铸钢的组织依旧为板条状回火索氏体,碳化物尺寸更加细小。非金属夹杂物中小尺寸夹杂比例更多。强度、硬度上升,塑性下降,耐磨性能更佳。With the rapid development of the modern equipment manufacturing industry,resource consumption and economic losses caused by material wear are becoming increasingly significant.The research and progress of the wear-resistant cast steel not only helps to improve production efficiency,reduce resource waste and reduce economic losses,but also plays a positive role in promoting scientific and technological progress and the development of equipment manufacturing industry.In this paper,Mg is added to 35Cr2Ni2Mo cast steel,which provides the research basis for the popularization and application of new high performance wear resistant cast steel.The microstructure of the steel was observed by optical microscope,scanning electron microscope and transmission electron microscope.The hardness and mechanical properties of the steel were measured by a microhardness tester and tensile testing machine,and the wear resistance of steel was measured by friction and wear testing machine.The results show that after the addition of Mg,the microstructure of the cast steel remains lath tempered sorbite,with a finer carbide size.The proportion of non-metallic inclusions with small size is greater.The strength and hardness increase,the toughness decreases,and the wear resistance is better.

关 键 词：耐磨铸钢 夹杂物 力学性能 磨损机理 

分 类 号：TG142.1[一般工业技术—材料科学与工程]