{"title":"Fatigue Limit Estimation for Post-Peened Induction-Hardened and Tempered Steel Considering Changes in Surface Properties","authors":"Shogo Takesue, Keisuke Ono, Koichiro Nambu, Shoichi Kikuchi","doi":"10.1111/ffe.14454","DOIUrl":null,"url":null,"abstract":"<p>Shot peening (SP) and fine particle peening (FPP) were performed as post-treatments on induction-hardened and tempered AISI 4140 steels. Furthermore, the combined effects of surface characteristics including changes in surface morphology, compressive residual stress, and hardness on the fatigue limit were quantitatively examined. The surface characteristics of the prepared specimens were investigated using a laser and stereomicroscope, a micro-Vickers hardness tester, and an X-ray device for residual stress measurements. The rotating bending fatigue properties were also examined. FPP increased the fatigue limit of induction-hardened and tempered steel samples by introducing compressive residual stress and increasing their surface hardness. Conversely, the fatigue limit of the steel treated with SP was lower than that of the electrochemically polished sample owing to the formation of large dents. The fatigue limits of post-peened induction-hardened and tempered steels can be estimated using a modified Goodman diagram considering changes in surface properties.</p>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"47 12","pages":"4607-4617"},"PeriodicalIF":3.1000,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ffe.14454","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fatigue & Fracture of Engineering Materials & Structures","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ffe.14454","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Shot peening (SP) and fine particle peening (FPP) were performed as post-treatments on induction-hardened and tempered AISI 4140 steels. Furthermore, the combined effects of surface characteristics including changes in surface morphology, compressive residual stress, and hardness on the fatigue limit were quantitatively examined. The surface characteristics of the prepared specimens were investigated using a laser and stereomicroscope, a micro-Vickers hardness tester, and an X-ray device for residual stress measurements. The rotating bending fatigue properties were also examined. FPP increased the fatigue limit of induction-hardened and tempered steel samples by introducing compressive residual stress and increasing their surface hardness. Conversely, the fatigue limit of the steel treated with SP was lower than that of the electrochemically polished sample owing to the formation of large dents. The fatigue limits of post-peened induction-hardened and tempered steels can be estimated using a modified Goodman diagram considering changes in surface properties.
期刊介绍：
Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.
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