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本文采用氮代替部分碳,通过铌、钛固氮形成氮合金化硬面合金,进行了耐高温磨损性能试验,研究了铌钛碳氮析出物对硬面合金耐高温磨损行为的影响.结果表明:在高温磨损过程中,MX(M为Nb、Ti;X为C、N)复合碳氮化物沿马氏体基体和晶界弥散析出,起到沉淀强化的作用,提高了硬面合金的高温硬度和抗裂性能,增强硬面合金的耐高温磨损性能,其磨损特征表现为磨损表面磨粒导致的窄浅犁沟.
In this paper, nitrogen was used to replace part of carbon, and nitrogen-alloying alloy was formed by niobium and titanium nitrogen fixation. The wear resistance of high-temperature wear resistance of hardface alloy was studied. The results showed that: In the high temperature wear process, MX (M is Nb, Ti; X is C, N) composite carbonitride is precipitated along the martensite matrix and the grain boundary, which play the role of precipitation strengthening and improve the high temperature hardness of hardface alloy And anti-cracking performance, enhance the high-temperature wear resistance of hardface alloy, the wear characteristics of wear surface abrasion caused by the narrow furrow.