Abstract The concept of phase reversion annealing involving cold deformation of metastable austenite to strain-induced martensite, followed by annealing was adopted to obtain fine grained 18Cr–8Ni austenitic stainless steel. The primary objective of the present study was to elucidate the wear performance of fine-grained austenitic stainless steel through three-body abrasive wear tests at room and high temperatures and compare with the coarse-grained counterpart. The quartzite stones (quartz content over 90 wt%) with diameter 5–15 mm and hardness of 1100HV were used as the abrasive in three-body abrasive wear tests. The study demonstrated that the microstructure consisting of near defect-free and equiaxed fine austenite grains with high yield strength and elongation exhibited superior wear resistance at high temperature (250 °C), which is attributed twinning induced plasticity deformation in fine austenite grains. The wear mechanism varied as a function of distance from the center of the steel sample and was characterized by microploughing and microcutting.

中文翻译：

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晶粒细化和应变诱导变形对18Cr-8Ni奥氏体不锈钢三体磨粒磨损响应的影响

摘要 采用亚稳态奥氏体冷变形为应变诱发马氏体，然后进行退火的反相退火概念，获得细晶粒18Cr-8Ni奥氏体不锈钢。本研究的主要目的是通过三体磨粒磨损试验在室温和高温下阐明细晶粒奥氏体不锈钢的磨损性能，并与粗晶粒对应物进行比较。在三体磨料磨损试验中，使用直径为 5-15 mm、硬度为 1100HV 的石英岩（石英含量超过 90%）作为磨料。研究表明，由具有高屈服强度和伸长率的近乎无缺陷和等轴细奥氏体晶粒组成的显微组织在高温（250°C）下表现出优异的耐磨性，这归因于细奥氏体晶粒中的孪晶诱导塑性变形。磨损机制随着距钢样品中心的距离而变化，并以微犁和微切削为特征。