Taoshuo Bai , Jingmang Xu , Hui Zhu , Kai Wang , Jian Yang , Yao Qian , Ping Wang , Lu Li , Chunxiang Tian
{"title":"对经过层流等离子体离散淬火和回火处理的钢轨的磨损演变和疲劳裂纹扩展行为的研究","authors":"Taoshuo Bai , Jingmang Xu , Hui Zhu , Kai Wang , Jian Yang , Yao Qian , Ping Wang , Lu Li , Chunxiang Tian","doi":"10.1016/j.wear.2024.205470","DOIUrl":null,"url":null,"abstract":"<div><p>Tempering treatment can improve the fatigue resistance while maintaining the wear resistance of laminar plasma discrete quenching (LPDQ) rails, but the fatigue crack initiation and propagation forms of LPDQ rails and tempered rails (TLPDQ) are not clear. In this study, twin-disc tests are performed on LPDQ and TLPDQ rails to obtain the wear and fatigue damage evolution of wheels and rails, and discuss the crack propagation mechanism. The results show that fatigue cracks in LPDQ rails initiate at the quenching zone edge and tend to propagate along the boundary after expanding to the quenching zone/substrate boundary in the depth direction. Whereas TLPDQ rail cracks tend to penetrate the boundary and propagate towards the substrate interior after expanding to the boundary.</p></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation into the wear evolution and fatigue crack propagation behaviour of rails subjected to laminar plasma discrete quenching and tempering treatment\",\"authors\":\"Taoshuo Bai , Jingmang Xu , Hui Zhu , Kai Wang , Jian Yang , Yao Qian , Ping Wang , Lu Li , Chunxiang Tian\",\"doi\":\"10.1016/j.wear.2024.205470\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Tempering treatment can improve the fatigue resistance while maintaining the wear resistance of laminar plasma discrete quenching (LPDQ) rails, but the fatigue crack initiation and propagation forms of LPDQ rails and tempered rails (TLPDQ) are not clear. In this study, twin-disc tests are performed on LPDQ and TLPDQ rails to obtain the wear and fatigue damage evolution of wheels and rails, and discuss the crack propagation mechanism. The results show that fatigue cracks in LPDQ rails initiate at the quenching zone edge and tend to propagate along the boundary after expanding to the quenching zone/substrate boundary in the depth direction. Whereas TLPDQ rail cracks tend to penetrate the boundary and propagate towards the substrate interior after expanding to the boundary.</p></div>\",\"PeriodicalId\":23970,\"journal\":{\"name\":\"Wear\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-06-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Wear\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0043164824002357\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Wear","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0043164824002357","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Investigation into the wear evolution and fatigue crack propagation behaviour of rails subjected to laminar plasma discrete quenching and tempering treatment
Tempering treatment can improve the fatigue resistance while maintaining the wear resistance of laminar plasma discrete quenching (LPDQ) rails, but the fatigue crack initiation and propagation forms of LPDQ rails and tempered rails (TLPDQ) are not clear. In this study, twin-disc tests are performed on LPDQ and TLPDQ rails to obtain the wear and fatigue damage evolution of wheels and rails, and discuss the crack propagation mechanism. The results show that fatigue cracks in LPDQ rails initiate at the quenching zone edge and tend to propagate along the boundary after expanding to the quenching zone/substrate boundary in the depth direction. Whereas TLPDQ rail cracks tend to penetrate the boundary and propagate towards the substrate interior after expanding to the boundary.
期刊介绍:
Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.