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Alternative TitleCharacteristics and joint microstructure-property analysis of bobbin tool friction stir welding of 2A14-T6 aluminum alloy
张会杰; 王敏; 张骁; 张景宝
Source Publication焊接学报
Volume36Issue:12Pages:65-68, 104
Indexed ByEI ; CSCD
EI Accession number20160902026595
Contribution Rank1
Funding Organization国家科技重大专项“大型薄壁高精度搅拌摩擦焊设备技术研究”资助项目(2010ZX04007-011)
Keyword高强铝合金 双轴肩搅拌摩擦焊 焊缝成形 微观组织 力学性能
Other AbstractA 2A14-T6 aluminum alloy was successfully bobbin tool friction stir welded. The defect-free sound joint with good surface and inner formation was produced. It was found that a converging zone of material plastic flow, composed of upper- and lower-shoulder-driven flows as well as pin-driven flow, was formed at the lower part of weld nugget zone. Microstructural analysis indicated that the grain size of the upper part was smaller than that of the middle and lower parts in the weld nugget zone. A softening region, whose width was approximately twice that of the shoulder diameter, was formed in the joint due to the coarsening and dissolution of the block-shaped second phases. The hardness distributions of the three layers of the joint were nearly the same, indicating that the heterogeneity of joint properties commonly occurred in conventional friction stir welding was not present in bobbin tool friction stir welding. The tensile test results showed that the strength efficiency of the bobbin tool friction stir welded joint can reach 71%. The joint was fractured through the converging zone of material flow in the weld nugget zone.
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Document Type期刊论文
Corresponding Author张会杰
Recommended Citation
GB/T 7714
张会杰,王敏,张骁,等. 2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析[J]. 焊接学报,2015,36(12):65-68, 104.
APA 张会杰,王敏,张骁,&张景宝.(2015).2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析.焊接学报,36(12),65-68, 104.
MLA 张会杰,et al."2A14-T6铝合金双轴肩搅拌摩擦焊特征及接头组织性能分析".焊接学报 36.12(2015):65-68, 104.
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