Migration interface of friction stir welding overlap joints with different tool geometries and rotation speeds

doi:10.13373/j.cnki.cjrm.2016.05.010

	Migration interface of friction stir welding overlap joints with different tool geometries and rotation speeds
	Jin, Yuhua; Huang, Zhenyou; Li, Changfeng; Wen, Yu; Wang, Xijing
刊名	Xiyou Jinshu/Chinese Journal of Rare Metals
	2016-05-01
卷号	40 期号:5 页码:467-472
关键词	Friction Friction stir welding Geometry Magnesium alloys Research laboratories Tensile strength Welds Friction stir Interface heights Interface migration Overlap joints Rotation speed Rotational speed Tensile shear strength Tool geometry
ISSN号	02587076
DOI	10.13373/j.cnki.cjrm.2016.05.010
英文摘要	Friction stir overlap welding tests for 2 mm thickness AZ61B magnesium alloy were investigated by conical pin tool and reverse conical pin tool, respectively. The effect of pin geometry and rotation speed on the migration interface of overlap joints was also analyzed. The results showed that stratifications appeared in the weld nugget zone under the action of reverse conical pin, while the stratification of weld nugget was not obvious under the action of conical pin, and the interface migration heights of former joints were lower than that of the latter joints. Furthermore, the rotational speeds could also highly influence the weld nugget zone morphologies and the migration interface heights: with the rotation speed increasing, weld nugget zone size increased; when the welding speed was constant, the interface migration height increased with the increase of the rotational speed; when the rotational speed exceeded a certain value, i.e., the rotational speed of reverse conical pin tool was more than 1200 r·min-1 or the rotational speed of conical pin tool was more than 1100 r·min-1, interface migration heights would remain constant or decreased. The tension shear mechanical test showed that the fractures originated from migration interfaces, and then propagated along the direction perpendicular to the load; the lower the height of the migration interface was, the higher the shear strength of the joints became; moreover, compared with overlap joint welded by the conical tool, the maximum shear strength of overlap joint welded by the reverse tool increased by 10%. © Editorial Office of Chinese Journal of Rare Metals. All right reserved.
语种	中文
出版者	Editorial Office of Chinese Journal of Rare Metals
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112441]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Non-Ferrous Metal Materials in Gansu Province, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Jin, Yuhua,Huang, Zhenyou,Li, Changfeng,et al. Migration interface of friction stir welding overlap joints with different tool geometries and rotation speeds[J]. Xiyou Jinshu/Chinese Journal of Rare Metals,2016,40(5):467-472.
APA	Jin, Yuhua,Huang, Zhenyou,Li, Changfeng,Wen, Yu,&Wang, Xijing.(2016).Migration interface of friction stir welding overlap joints with different tool geometries and rotation speeds.Xiyou Jinshu/Chinese Journal of Rare Metals,40(5),467-472.
MLA	Jin, Yuhua,et al."Migration interface of friction stir welding overlap joints with different tool geometries and rotation speeds".Xiyou Jinshu/Chinese Journal of Rare Metals 40.5(2016):467-472.