Sida Chen, Qinyuan Huang, Fengshuai Wu, Zulai Li, Quan Shan
{"title":"贝氏体钢中残余奥氏体与α-Fe之间的应变分配主导磨损行为","authors":"Sida Chen, Qinyuan Huang, Fengshuai Wu, Zulai Li, Quan Shan","doi":"10.1007/s11249-024-01955-0","DOIUrl":null,"url":null,"abstract":"<div><p>The strains in α-Fe (bainite) and retained austenite (RA) exhibit an apparent discrepancy during deformation, namely strain partitioning, which can determine the tensile behavior of bainitic steels. Due to the involvement of plastic deformation and strain accumulation in the wear process, the strain partitioning phenomenon must be considered in the study of wear mechanisms. The impact wear tests results indicated that the wear behavior was strongly affected by strain partitioning between α-Fe and RA, and the initial hardness and work-hardening rate were not the main factors determining the wear resistance. The strain partitioning is closely related to the RA morphology tailored by isothermal processes, which was proved by in situ tensile test. The strain discrepancy between the continuous thin-film RA and α-Fe was shown to be less significant. A smaller strain discrepancy alleviated stress concentration and minimized the occurrence of cracks and material spalling during wear. The strain discrepancy between blocky RA and α-Fe was shown to be greater. The high-strain in blocky RA promoted the strain-induced transformation (SIT) effect and increased the work-hardening rate; however, it led to strain concentration on the worn surface and accelerated surface spalling.</p></div>","PeriodicalId":806,"journal":{"name":"Tribology Letters","volume":"73 1","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Wear Behavior Dominated by Strain Partitioning Between Retained Austenite and α-Fe in Bainitic Steel\",\"authors\":\"Sida Chen, Qinyuan Huang, Fengshuai Wu, Zulai Li, Quan Shan\",\"doi\":\"10.1007/s11249-024-01955-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The strains in α-Fe (bainite) and retained austenite (RA) exhibit an apparent discrepancy during deformation, namely strain partitioning, which can determine the tensile behavior of bainitic steels. Due to the involvement of plastic deformation and strain accumulation in the wear process, the strain partitioning phenomenon must be considered in the study of wear mechanisms. The impact wear tests results indicated that the wear behavior was strongly affected by strain partitioning between α-Fe and RA, and the initial hardness and work-hardening rate were not the main factors determining the wear resistance. The strain partitioning is closely related to the RA morphology tailored by isothermal processes, which was proved by in situ tensile test. The strain discrepancy between the continuous thin-film RA and α-Fe was shown to be less significant. A smaller strain discrepancy alleviated stress concentration and minimized the occurrence of cracks and material spalling during wear. The strain discrepancy between blocky RA and α-Fe was shown to be greater. The high-strain in blocky RA promoted the strain-induced transformation (SIT) effect and increased the work-hardening rate; however, it led to strain concentration on the worn surface and accelerated surface spalling.</p></div>\",\"PeriodicalId\":806,\"journal\":{\"name\":\"Tribology Letters\",\"volume\":\"73 1\",\"pages\":\"\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2025-01-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Tribology Letters\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11249-024-01955-0\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribology Letters","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11249-024-01955-0","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Wear Behavior Dominated by Strain Partitioning Between Retained Austenite and α-Fe in Bainitic Steel
The strains in α-Fe (bainite) and retained austenite (RA) exhibit an apparent discrepancy during deformation, namely strain partitioning, which can determine the tensile behavior of bainitic steels. Due to the involvement of plastic deformation and strain accumulation in the wear process, the strain partitioning phenomenon must be considered in the study of wear mechanisms. The impact wear tests results indicated that the wear behavior was strongly affected by strain partitioning between α-Fe and RA, and the initial hardness and work-hardening rate were not the main factors determining the wear resistance. The strain partitioning is closely related to the RA morphology tailored by isothermal processes, which was proved by in situ tensile test. The strain discrepancy between the continuous thin-film RA and α-Fe was shown to be less significant. A smaller strain discrepancy alleviated stress concentration and minimized the occurrence of cracks and material spalling during wear. The strain discrepancy between blocky RA and α-Fe was shown to be greater. The high-strain in blocky RA promoted the strain-induced transformation (SIT) effect and increased the work-hardening rate; however, it led to strain concentration on the worn surface and accelerated surface spalling.
期刊介绍:
Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.