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Temperature monitoring and material flow characteristics of friction stir welded 2A14-t6 aerospace aluminum alloy
Wu TK(武廷课)1,2; Zhao FQ(赵烽群)1,2; Luo HT(骆海涛)2,3; Wang, Haonan2,4; Li, Yuxin2,4
Department空间自动化技术研究室
Source PublicationMaterials
ISSN1996-1944
2019
Volume12Issue:20Pages:1-19
Indexed BySCI ; EI
EI Accession number20194407615650
WOS IDWOS:000498402100110
Contribution Rank1
Funding OrganizationNational Natural Science Foundation of China (Grant No. 51505470) ; State Key Laboratory of Robotics (Grant No. Y7A1207301) ; Youth Innovation Promotion Association, CAS (Grant No. 2018237) ; ‘JXS’ innovation fund, SIA (Grant No. 20180504)
Keywordtemperature monitoring numerical simulation material flow model turbulence phenomenon welding defects
Abstract

Aiming at the problems that the temperature in the welding area of friction stir welding (FSW) is difficult to measure and the joints are prone to defects. Hence, it is particularly important to study the material flow in the welding area and improve the welding quality. The temperature of the tool shoulder and the tool pin was monitored by the wireless temperature measuring system. The finite element model of friction stir welding was established and the welding conditions were numerically simulated. The flow law of material of the friction stir welding process was studied by numerical simulation. The material flow model was established by combining the microstructure analysis results, and the forming mechanism of the defects was analyzed. The results show that the temperature in the welding zone is the highest at 1300 rpm, and the temperature at the tool shoulder is significantly higher than that at the tool pin in the welding stage. When high-rotation speeds (HRS) are chosen, the material beneath the tool shoulder tends to be extruded into the pin stirred zone (PSZ) after flowing back to the advancing side. This will cause turbulence phenomenon in the advancing side of the joint, which will easily lead to the formation of welding defects. In the future, temperature monitoring methods and the flow model of material can be used to optimize the welding parameters.

Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/25871
Collection空间自动化技术研究室
Affiliation1.School of Mechanical Engineering, Shenyang Ligong University, Shenyang 110159, China
2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
3.Institutes for Robotics and IntelligentManufacturing, Chinese Academy of Sciences, Shenyang 110016, China
4.Institute of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
Recommended Citation
GB/T 7714
Wu TK,Zhao FQ,Luo HT,et al. Temperature monitoring and material flow characteristics of friction stir welded 2A14-t6 aerospace aluminum alloy[J]. Materials,2019,12(20):1-19.
APA Wu TK,Zhao FQ,Luo HT,Wang, Haonan,&Li, Yuxin.(2019).Temperature monitoring and material flow characteristics of friction stir welded 2A14-t6 aerospace aluminum alloy.Materials,12(20),1-19.
MLA Wu TK,et al."Temperature monitoring and material flow characteristics of friction stir welded 2A14-t6 aerospace aluminum alloy".Materials 12.20(2019):1-19.
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