【摘要】 采用机械合金化(MA)结合放电等离子体烧结技术(SPS)制备了超细晶粒不锈钢和超细晶粒TiC/不锈钢复合材料,研究了316不锈钢原材、超细晶不锈钢和超细晶TiC/不锈钢复合材料的摩擦磨损性能。与316不锈钢原材料相比,超细晶不锈钢和超细晶TiC/不锈钢复合材料的耐磨损性能均明显提高,磨损率分别降低了24.1%和42.3%。316不锈钢原材的磨损主要以粘着磨损为主;超细晶不锈钢的磨损机制主要以磨料磨损为主,粘着磨损为辅;超细晶TiC/不锈钢复合材料的磨损以疲劳磨损为主。更多还原

【Abstract】 Ultrafine grain stainless steel and TiC / stainless steel composite was prepared by mechanical alloying(MA) and spark plasma sintering(SPS).The results show that the wear resistance of ultrafine stainless steel and its composite is superior to that of stainless steel raw materials.For the ultrafine stainless steel,the wear resistance is enhanced by 24.4% which is higher than that of stainless steel raw materials,and for the ultrafine TiC / stainless steel composite,the wear resistance is enhanced by 42.3%.The wear mechanism of stainless steel raw material is mainly adhesive wear.The wear mechanism of ultrafine stainless steel is the mechanism of plough debris wear and adhesive wear.The fatigue wear is main for the ultrafine TiC/stainless steel composite.更多还原