{"title":"Surface Microstructure Refinement and Mechanical Properties of GCr15 Steels Improved During Ultrasonic Surface Rolling Processing","authors":"Xianmeng Xue, Shubo Xu, Xiquan Ma, JuanJuan Han, Wei Zheng","doi":"10.1590/1980-5373-mr-2022-0606","DOIUrl":null,"url":null,"abstract":".","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"132 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research-ibero-american Journal of Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1590/1980-5373-mr-2022-0606","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
超声表面轧制改善GCr15钢的表面组织和力学性能
采用超声表面轧制工艺(USRP)对gcr15轴承钢进行强化。建立了USRP有限元三维模型，分析了轴承钢表面的残余压应力和等效塑性应变分布。采用SEM、EBSD、x射线衍射(XRD)和电化学技术对USRP处理前后的微观结构、硬度、表面粗糙度和耐蚀性进行了表征。结果表明:USRP处理能显著改善材料的表面显微组织和残余压应力分布，获得约60μm的塑性应变层;USRP处理后，籽粒平均错取向(KAM)增加，位错活动性增强，导致晶界附近聚集，lagb的比例增加到38.8%。在表面晶粒细化、残余压应力和高光泽度表面的共同作用下，自腐蚀电流密度降低了两个数量级，耐蚀性显著提高。本研究提出了一种解决轴承失效问题的方法，并对理解超声表面轧制加工的变形机理具有重要意义。
本文章由计算机程序翻译，如有差异，请以英文原文为准。
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