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Nanoindentation Hardness Distribution and Strain Field and Fracture Evolution in Dissimilar Friction Stir-Welded AA 6061-AA 5A06 Aluminum Alloy Joints
Peng GJ(彭光健); Ma Y; Hu JJ; Jiang WF; Huan Y(郇勇); Chen ZT; Zhang TH(张泰华)
发表期刊ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
2018-10-01
页码Ar-4873571
ISSN1687-8434
摘要Aluminum alloy AA 6061-T651 and 5A06-H112 rolled plates were successfully welded by friction stir welding (FSW) at three rotation speeds of 600, 900, and 1200 rpm with two transverse speeds of 100 and 150 mm/min. Mechanical properties and strain field evolution of FSW AA 6061-AA 5A06 were characterized by the uniaxial tension and digital image correlation (DIC) tests. Furthermore, the hardness distribution map of whole cross section was obtained via the nanoindentation method with 700 indents. Both DIC and nanoindentation results reveal that the heat-affected zone (HAZ) of AA 6061 alloy is the softest area in the weldment, and the fracture happens in this region. The microstructure evolution characterized by electron-backscatter diffraction (EBSD) indicates that the continuous dynamic recrystallization is the primary grain structure evolution in the stirring zone, and the grain refinement helps improve the mechanical properties. Analyses of the micro- and macrofeatures of the fracture surfaces via scanning electron microscopy (SEM) and optical microscope suggest that the increasing of heat input could enlarge the size of HAZ and reduce the slant angle of HAZ and thus lead the fracture angle to decrease and cause the dimples change from inclined ones to normal ones.
DOI10.1155/2018/4873571
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000447884500001
关键词[WOS]MECHANICAL-PROPERTIES ; WELDING PROCESS ; MICROSTRUCTURE ; SPEED ; BEHAVIOR ; ZONE ; FATIGUE ; TOOL
WOS研究方向Materials Science, Multidisciplinary
WOS类目Materials Science
项目资助者National Natural Science Foundation of China [11727803, 11772302, 11672356, 11402233] ; Public Welfare Project of Zhejiang Province [2015C31074]
论文分区Q3
力学所作者排名5
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/78160
专题非线性力学国家重点实验室
作者单位1.Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310014, Zhejiang, Peoples R China
2.Johns Hopkins Univ, Dept Mech Engn, Baltimore, MI 21218 USA
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
4.George Washington Univ, Dept Mech & Aerosp Engn, Washington, DC 20052 USA
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Peng GJ,Ma Y,Hu JJ,et al. Nanoindentation Hardness Distribution and Strain Field and Fracture Evolution in Dissimilar Friction Stir-Welded AA 6061-AA 5A06 Aluminum Alloy Joints[J]. ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2018:Ar-4873571.
APA 彭光健.,Ma Y.,Hu JJ.,Jiang WF.,Huan Y.,...&张泰华.(2018).Nanoindentation Hardness Distribution and Strain Field and Fracture Evolution in Dissimilar Friction Stir-Welded AA 6061-AA 5A06 Aluminum Alloy Joints.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,Ar-4873571.
MLA 彭光健,et al."Nanoindentation Hardness Distribution and Strain Field and Fracture Evolution in Dissimilar Friction Stir-Welded AA 6061-AA 5A06 Aluminum Alloy Joints".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING (2018):Ar-4873571.
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