Fatigue Behavior of Al/Steel Dissimilar Friction Stir Welds and the Effect of Die-Press Forming

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-11-11 DOI:10.1111/ffe.14492

Yoshihiko Uematsu, Ryousuke Miyata, Paul Dario Toasa Caiza

{"title":"Fatigue Behavior of Al/Steel Dissimilar Friction Stir Welds and the Effect of Die-Press Forming","authors":"Yoshihiko Uematsu, Ryousuke Miyata, Paul Dario Toasa Caiza","doi":"10.1111/ffe.14492","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>6016-T4 aluminum (Al) alloy plate was butt welded to the cold-rolled steel plate by a friction stir welding (FSW) technique, and the fatigue properties of Al/steel dissimilar welds were investigated. Some dissimilar welds were die-press formed to the hat shape, and specimens were sampled from the corners of the hat shape, where severe plastic deformation occurred by the die-press forming. The die-press-formed samples had better tensile strengths and hardness than the as-welded ones because of the work hardening. It indicates that the die-press forming is applicable for the Al/steel dissimilar welds. However, large voids were formed around the steel fragments dispersed into Al matrix by die-press forming. Those voids acted as the fatigue crack nucleation sites, thus reducing the fatigue lives of the die-press-formed specimens. When the bottom side of the welds experienced tension plastic deformation, the fatigue strength was the lowest.</p>\n </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 2","pages":"629-638"},"PeriodicalIF":3.1000,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","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.14492","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

6016-T4 aluminum (Al) alloy plate was butt welded to the cold-rolled steel plate by a friction stir welding (FSW) technique, and the fatigue properties of Al/steel dissimilar welds were investigated. Some dissimilar welds were die-press formed to the hat shape, and specimens were sampled from the corners of the hat shape, where severe plastic deformation occurred by the die-press forming. The die-press-formed samples had better tensile strengths and hardness than the as-welded ones because of the work hardening. It indicates that the die-press forming is applicable for the Al/steel dissimilar welds. However, large voids were formed around the steel fragments dispersed into Al matrix by die-press forming. Those voids acted as the fatigue crack nucleation sites, thus reducing the fatigue lives of the die-press-formed specimens. When the bottom side of the welds experienced tension plastic deformation, the fatigue strength was the lowest.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

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.