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Welding characteristics analysis and application on spacecraft of friction stir welded 2A14-T6 aluminum alloy
Luo HT(骆海涛)1,2; Wu TK(武廷课)1,3; Fu J(富佳)1,2; Wang W(王巍)1,4; Chen, Ning1,4; Wang, Haonan1,4
Department空间自动化技术研究室
Source PublicationMaterials
ISSN1996-1944
2019
Volume12Issue:3Pages:1-17
Indexed BySCI ; EI
EI Accession number20190606483305
WOS IDWOS:000460768000149
Contribution Rank1
Funding OrganizationNational Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; JXS innovation fund, SIA
Keywordfriction stir welding (FSW) finite element model (FEM) microstructure mechanical properties aerospace application
AbstractAccording to the actual size parameters, the finite element model (FEM) of friction stir welding (FSW) was established, and the FEM was updated by experiments. The FSW of the 2A14- T6 high-strength aluminum alloy was simulated under a reasonable welding process parameter range, and the welding process parameters with good simulation effect were determined. The test was carried out under the same parameters, and the axial force of the FSW tool and temperature of the workpiece measuring point were collected. The comparison between the simulated data and the experimental data is reasonable, indicating the correctness of the FEM. The microstructure analysis of the welded joint shows that the grain size in the upper part of the weld nugget was smaller than that in the middle and lower parts, and there are obvious boundaries of grain size in each region of the joint. The hardness of the joint in the upper layer is higher than that in the middle and lower layers, and the minimum Vickers hardness value of the joint appears near the interface between the thermo-mechanically affected zone and the heat-affected zone on both sides of the weld. Tensile testing shows that the strength coefficient of the joint reaches 82.5% under this process parameter, and the sample breaks at the intersection of the material flow during stretching. After analyzing the final mechanical properties of the joint, we found that a degree of aerospace application can be achieved. Under this parameter, the welding test was carried out on the top cover of the rocket fuel tank. Firstly, melon valve welding, which is relatively difficult in welding conditions, was carried out, and a high-quality joint with good surface and no defects was obtained.
Language英语
WOS SubjectMaterials Science, Multidisciplinary
WOS KeywordMECHANICAL-PROPERTIES ; PROCESS PARAMETERS ; MICROSTRUCTURE ; JOINTS ; TEMPERATURE ; SIMULATION ; EVOLUTION ; 6061-T6 ; TORQUE
WOS Research AreaMaterials Science
Funding ProjectNational Natural Science Foundation of China[51505470] ; Youth Innovation Promotion Association, CAS ; JXS innovation fund, SIA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/24147
Collection空间自动化技术研究室
Corresponding AuthorLuo HT(骆海涛)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110016, China
3.School of Mechanical Engineering, Shenyang Ligong University, Shenyang 110159, China
4.Institute of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
Recommended Citation
GB/T 7714
Luo HT,Wu TK,Fu J,et al. Welding characteristics analysis and application on spacecraft of friction stir welded 2A14-T6 aluminum alloy[J]. Materials,2019,12(3):1-17.
APA Luo HT,Wu TK,Fu J,Wang W,Chen, Ning,&Wang, Haonan.(2019).Welding characteristics analysis and application on spacecraft of friction stir welded 2A14-T6 aluminum alloy.Materials,12(3),1-17.
MLA Luo HT,et al."Welding characteristics analysis and application on spacecraft of friction stir welded 2A14-T6 aluminum alloy".Materials 12.3(2019):1-17.
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