Microstructural evolution and mechanical properties of friction stir welded 6082-T6 aluminum alloy
Wang, Xijing; Wei, Xueling; Zhang, Liangliang
2018-03-25
发表期刊Hanjie Xuebao/Transactions of the China Welding Institution
ISSN0253360X
卷号39期号:3页码:1-5
摘要Microstructure evolution and mechanical proprieties of friction stir welded 6082-T6 aluminum alloy were layered-investigated with transmission electron microscope(TEM), scanning electron microscopy(SEM), tensile test machine and Vickers hardness tester. The results showed that plastic deformation occurred in the upper layer of nugget zone which caused the increase of lattice distortion. Hence a large number of dislocations were accumulated into the substructure boundary with dynamic recovery to reduce energy. The grain at the top part of the weld was fine due to dynamic recrystallization by friction heat and shoulder crashing. The bottom of nugget zone which was mainly affected by stirring of the pin was composed of course grain because fewer heat was diffuse to the bottom and dynamic recrystallization and recovery were decreased correspondingly compared to the upper part of the weld. The rodlike β' phase precipitated at both advancing and retreating side of heat affected zone. The microhardness distribution of both the top and bottom side of the joint along the direction perpendicular to the weld had a W shape. The minimum microhardness value appeaed at the advancing side. The tensile strength of the topside weld along welding direction was higher than that of the bottom side. The tensile strength was 205 MPa and 186 MPa respectively. The fracture mode of the weld was ductile fracture. © 2018, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
关键词Ductile fracture Dynamic recrystallization Friction Friction stir welding Heat affected zone Metal testing Microhardness Microstructural evolution Scanning electron microscopy Tensile strength Tensile testing Transmission electron microscopy Vickers hardness Advancing side Dynamic recovery Lattice distortions Micro-structure evolutions Microhardness distribution Recrystallization and recovery Retreating side Welding directions
DOI10.12073/j.hjxb.2018390057
收录类别EI
语种中文
出版者Harbin Research Institute of Welding
EI入藏号20182205257157
EI主题词Aluminum alloys
EI分类号531.1 Metallurgy - 531.2 Metallography - 538.2 Welding - 538.2.1 Welding Processes - 541.1 Aluminum - 541.2 Aluminum Alloys - 951 Materials Science
来源库Compendex
分类代码531.1 Metallurgy - 538.2 Welding - 538.2.1 Welding Processes - 541.2 Aluminum Alloys - 951 Materials Science
引用统计
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/113788
专题省部共建有色金属先进加工与再利用国家重点实验室
材料科学与工程学院
作者单位State Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式
GB/T 7714
Wang, Xijing,Wei, Xueling,Zhang, Liangliang. Microstructural evolution and mechanical properties of friction stir welded 6082-T6 aluminum alloy[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2018,39(3):1-5.
APA Wang, Xijing,Wei, Xueling,&Zhang, Liangliang.(2018).Microstructural evolution and mechanical properties of friction stir welded 6082-T6 aluminum alloy.Hanjie Xuebao/Transactions of the China Welding Institution,39(3),1-5.
MLA Wang, Xijing,et al."Microstructural evolution and mechanical properties of friction stir welded 6082-T6 aluminum alloy".Hanjie Xuebao/Transactions of the China Welding Institution 39.3(2018):1-5.
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