Liang Wang, Chengwu Cui, Peishan Zhou, Bin Wang, Hualin Zheng
{"title":"材料流动对AZ40M/AZ61A异种镁合金搅拌摩擦焊接接头织构演化及拉伸断裂行为的影响","authors":"Liang Wang, Chengwu Cui, Peishan Zhou, Bin Wang, Hualin Zheng","doi":"10.1111/ffe.14658","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>This study aims to elucidate the effects of material flow on texture evolution and tensile fracture behaviors of friction stir welding (FSW) AZ40M/AZ61A dissimilar Mg alloys joint. The stirring pin mainly affects the material flow between the middle and top of the stir zone (SZ). The SZ presented fine and equiaxed grains because of dynamic recrystallization (DRX), and the average grain size is 19.9 μm. The SZ center presented the strong typical basal texture with a texture intensity of about 63.333 times random distribution that deteriorates the joint mechanical properties. The yield strength of the dissimilar Mg alloy welded joint is 172 MPa, which is about 75% of the base metals. The AZ40M and SZ edge has the lowest hardness of 54.8 HV, which is the softened area of the joint, resulting in crack propagation and fracture during the tensile process. The tensile crack was initiated at the edge of the SZ near the AS with the lowest hardness and propagated along the SZ center. The crack path depended on the “onion-ring structure” and the second phase.</p>\n </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 7","pages":"3050-3066"},"PeriodicalIF":3.2000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Effects of Material Flow on Texture Evolution and Tensile Fracture Behaviors of Friction Stir Welded AZ40M/AZ61A Dissimilar Mg Alloys Joint\",\"authors\":\"Liang Wang, Chengwu Cui, Peishan Zhou, Bin Wang, Hualin Zheng\",\"doi\":\"10.1111/ffe.14658\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>This study aims to elucidate the effects of material flow on texture evolution and tensile fracture behaviors of friction stir welding (FSW) AZ40M/AZ61A dissimilar Mg alloys joint. The stirring pin mainly affects the material flow between the middle and top of the stir zone (SZ). The SZ presented fine and equiaxed grains because of dynamic recrystallization (DRX), and the average grain size is 19.9 μm. The SZ center presented the strong typical basal texture with a texture intensity of about 63.333 times random distribution that deteriorates the joint mechanical properties. The yield strength of the dissimilar Mg alloy welded joint is 172 MPa, which is about 75% of the base metals. The AZ40M and SZ edge has the lowest hardness of 54.8 HV, which is the softened area of the joint, resulting in crack propagation and fracture during the tensile process. The tensile crack was initiated at the edge of the SZ near the AS with the lowest hardness and propagated along the SZ center. The crack path depended on the “onion-ring structure” and the second phase.</p>\\n </div>\",\"PeriodicalId\":12298,\"journal\":{\"name\":\"Fatigue & Fracture of Engineering Materials & Structures\",\"volume\":\"48 7\",\"pages\":\"3050-3066\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2025-04-21\",\"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.14658\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fatigue & Fracture of Engineering Materials & Structures","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ffe.14658","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}
The Effects of Material Flow on Texture Evolution and Tensile Fracture Behaviors of Friction Stir Welded AZ40M/AZ61A Dissimilar Mg Alloys Joint
This study aims to elucidate the effects of material flow on texture evolution and tensile fracture behaviors of friction stir welding (FSW) AZ40M/AZ61A dissimilar Mg alloys joint. The stirring pin mainly affects the material flow between the middle and top of the stir zone (SZ). The SZ presented fine and equiaxed grains because of dynamic recrystallization (DRX), and the average grain size is 19.9 μm. The SZ center presented the strong typical basal texture with a texture intensity of about 63.333 times random distribution that deteriorates the joint mechanical properties. The yield strength of the dissimilar Mg alloy welded joint is 172 MPa, which is about 75% of the base metals. The AZ40M and SZ edge has the lowest hardness of 54.8 HV, which is the softened area of the joint, resulting in crack propagation and fracture during the tensile process. The tensile crack was initiated at the edge of the SZ near the AS with the lowest hardness and propagated along the SZ center. The crack path depended on the “onion-ring structure” and the second phase.
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.