材料工程2025，Vol.53Issue(8)：166-174,9.DOI:10.11868/j.issn.1001-4381.2023.000339
高强韧铸态QT800-5球墨铸铁的磨损性能
Wear resistance of as-cast QT800-5 ductile iron with high strength and toughness
摘要
Abstract
As-cast QT800-5 ductile iron with high strength and toughness is prepared by composite alloying of Si,Cu,Ni,Mo and Sn in this study.The effects of mechanical properties,normal load,sliding speed and ambient temperature on the wear resistance are systematically investigated by means of high temperature friction and wear tester(HT-1000).Meanwhile,the microstructure and morphology of wear surface are characterized and analyzed by scanning electron microscope(SEM)and 3D optical profiler.The experimental results show that the maximum wear rates corresponding to normal load,sliding speed and ambient temperature are 16.25×10-6,19.23×10-6 mm3·m-1 and 55.54×10-6 mm3·m-1,respectively.The as-cast QT800-5 ductile iron shows good wear resistance at room temperature of 25℃and low normal load and sliding velocity.The main wear mechanism under normal load and sliding velocity is adhesive wear,while the wear mechanism under ambient temperature is oxidative wear and adhesive wear,accompanied by mild abrasive wear.关键词
铸态QT800-5/复合合金化/磨损性能/磨损机制Key words
as-cast QT800-5/compound alloying/wear resistance/wear mechanism分类
矿业与冶金引用本文复制引用
王振,刘生发,刘振宇,刘俐..高强韧铸态QT800-5球墨铸铁的磨损性能[J].材料工程,2025,53(8):166-174,9.基金项目
国家自然科学基金(62004144,62274122) （62004144,62274122）
