Drilling-filling friction stir repairing of AZ31B magnesium alloy

被引:22
作者
Huang, Ruofei [1 ]
Ji, Shude [1 ]
Meng, Xiangchen [1 ]
Li, Zhengwei [1 ]
机构
[1] Shenyang Aerosp Univ, Fac Aerosp Engn, 37 Daoyi South Ave, Shenyang 110136, Liaoning, Peoples R China
基金
中国国家自然科学基金;
关键词
Drilling-filling friction stir repairing; Magnesium alloy; Defect; Microstructure; Microhardness; MECHANICAL-PROPERTIES; ALUMINUM-ALLOY; GRAIN-SIZE; MICROSTRUCTURE; TOOL; PIN; KEYHOLE; JOINT;
D O I
10.1016/j.jmatprotec.2018.01.019
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Drilling and filling stages were successfully performed to produce a regular volume defect and then repair this fabricated defect. The microhardness distribution of the repaired joint was flat, and an excellent diffusion bonding occurred at the interface between the filler and the base material (BM) under the optimum combinations of a rotational velocity of 1600 rpm, dwell time of 20 s and plunge depth of 0.4 mm. A high-quality joint with the maximum tensile strength of 217 MPa was achieved. The fracture position of this joint was located at the thermo-mechanically affected zone rather than the interface between the filler and the BM of the joint with a low tensile strength.
引用
收藏
页码:765 / 772
页数:8
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