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首页> 外文期刊>Journal of Materials Engineering and Performance >Tribological Behavior of a Heat-Treated Cobalt-Based Alloy
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Tribological Behavior of a Heat-Treated Cobalt-Based Alloy

机译：热处理钴基合金的摩擦学行为

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摘要

The present study reviews the tribological behavior of a Co-Cr-Mo alloy regarding to microstructural changes caused by solution and aged heat treatments. The influence of microstructure on wear resistance was assessed in a pin-on-disk configuration. It was found that after a long solution heat treatment of 6 h at 1200℃, most of the carbides were dissolved into the matrix, and coarse grain size was obtained. Solution treatment for 1 h presented fine grains and globular carbides along the matrix. Aging at 850℃ resulted in a quantity of phase transformation which was different from austenite face cubic centered to martensite hexagonal close packed (HCP); 35% of HCP was reached during 8 h of treatment and 60% for 15 h. As-cast condition and 6-h solution heat treatment exhibited the greatest wear loss, while 1-h solution treatment and samples containing HCP phase showed a threefold lower wear.
机译：本研究回顾了Co-Cr-Mo合金在固溶和时效热处理引起的微观结构变化方面的摩擦学行为。微观结构对耐磨性的影响在销盘式配置中进行了评估。结果表明，在1200℃长时间固溶热处理6h后，大部分碳化物溶解在基体中，获得了较粗的晶粒。固溶处理1小时后，沿基体出现细晶粒和球状碳化物。在850℃时效时，产生的相变量不同于以奥氏体立方晶面为中心的马氏体六方密堆积（HCP）。治疗8小时达到35％的HCP，持续15小时达到60％的HCP。铸态条件和6h固溶热处理表现出最大的磨损损失，而1h固溶处理和含有HCP相的样品则表现出低三倍的磨损。

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