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Microstructure-property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys
Zhang HJ(张会杰); Wang M(王敏); Zhou WJ(周维佳); Zhang X(张骁); Zhu Z(朱智); Yu T(于涛); Yang GX(杨广新)
Department空间自动化技术研究室
Source PublicationMaterials & Design
ISSN0264-1275
2015
Volume86Pages:379-387
Indexed BySCI ; EI
EI Accession number20153901316154
WOS IDWOS:000362862700049
Contribution Rank1
Funding OrganizationSelf-Determined Project for Youth of State Key Laboratory of Robotics (Y3A1209), Shenyang Institute of Automation Chinese Academy of Sciences (Y3A1209) and the National Science and Technology Major Project of China (2010ZX04007-011)
KeywordNon-weld-thinning Friction Stir Welding Aluminum Alloy Microstructure Characteristic Mechanical Property
AbstractThe weld thinning phenomenon occurring in conventional friction stir welding (C-FSW) has negative effects on the formation quality and serviceable reliability of FSW joints. The existing methods for solving the weld thinning problem in FSW exhibit some universal deficiencies, such as low efficiency, low quality and narrow applicable range. Motivated by this challenge, a novel non-weld-thinning (NWT) FSW process, during which a zero shoulder plunge depth is applied to the welding tool, is proposed and investigated in the present paper. The results indicate that the high quality NWT-FSW joints can be efficiently produced by using this novel process. Microstructural analysis implies that the grains in weld nugget of NWT-FSW joints present smaller size and a more uniformly distributed feature than those of C-FSW joints. Compared with the C-FSW joints, the NWT-FSW joints are characterized by narrower softening regions and higher minimum hardness values, leading to an increase in tensile strength during tensile test. The temperature history analysis suggests that the thermal effect of tool shoulder is effectively controlled during NWT-FSW due to the application of zero shoulder plunge depth, which is the intrinsic reason for the grain refinement and strength improvement of NWT-FSW joints. © 2015.
Language英语
WOS HeadingsScience & Technology ; Technology
WOS SubjectMaterials Science, Multidisciplinary
WOS KeywordMECHANICAL-PROPERTIES ; RESIDUAL-STRESS ; TOOL ; JOINTS ; PARAMETERS ; FLOW
WOS Research AreaMaterials Science
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/17119
Collection空间自动化技术研究室
Corresponding AuthorZhou WJ(周维佳)
AffiliationState Key Laboratory of Robotics, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, China
Recommended Citation
GB/T 7714
Zhang HJ,Wang M,Zhou WJ,et al. Microstructure-property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys[J]. Materials & Design,2015,86:379-387.
APA Zhang HJ.,Wang M.,Zhou WJ.,Zhang X.,Zhu Z.,...&Yang GX.(2015).Microstructure-property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys.Materials & Design,86,379-387.
MLA Zhang HJ,et al."Microstructure-property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys".Materials & Design 86(2015):379-387.
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