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); Zhang X(张骁); Zhu Z(朱智); Yu T(于涛); Yang GX(杨广新) | |
刊名 | Materials & Design |
2015 | |
卷号 | 86页码:379-387 |
关键词 | Non-weld-thinning Friction Stir Welding Aluminum Alloy Microstructure Characteristic Mechanical Property |
ISSN号 | 0264-1275 |
产权排序 | 1 |
英文摘要 | The 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. |
WOS关键词 | MECHANICAL-PROPERTIES ; RESIDUAL-STRESS ; TOOL ; JOINTS ; PARAMETERS ; FLOW |
WOS研究方向 | Materials Science |
语种 | 英语 |
WOS记录号 | WOS:000362862700049 |
资助机构 | Self-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) |
内容类型 | 期刊论文 |
源URL | [http://ir.sia.cn/handle/173321/17119] |
专题 | 沈阳自动化研究所_空间自动化技术研究室 |
通讯作者 | Zhang X(张骁) |
作者单位 | State Key Laboratory of Robotics, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, China |
推荐引用方式 GB/T 7714 | Zhang HJ,Wang M,Zhang X,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,Zhang X,Zhu Z,Yu T,&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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