Nanoindentation Hardness Distribution and Strain Field and Fracture Evolution in Dissimilar Friction Stir-Welded AA 6061-AA 5A06 Aluminum Alloy Joints

doi:10.1155/2018/4873571

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	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)
刊名	ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
	2018-10-01
页码	Ar-4873571
ISSN号	1687-8434
DOI	10.1155/2018/4873571
英文摘要	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.
分类号	Q3
URL标识	查看原文
WOS关键词	MECHANICAL-PROPERTIES ; WELDING PROCESS ; MICROSTRUCTURE ; SPEED ; BEHAVIOR ; ZONE ; FATIGUE ; TOOL
WOS研究方向	Materials Science, Multidisciplinary
语种	英语
WOS记录号	WOS:000447884500001
资助机构	National Natural Science Foundation of China [11727803, 11772302, 11672356, 11402233] ; Public Welfare Project of Zhejiang Province [2015C31074]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78160]
专题	力学研究所_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
推荐引用方式 GB/T 7714	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.