Formation Mechanism of Weld Interface by Friction Stir Butt Welding between A6061 and S45C

被引：0

作者：

Yasui T. ^{[1
]}

Imai A. ^{[2
,3
]}

Fukumoto M. ^{[1
]}

机构：

[1] Toyohashi University of Technology, Department of Mechanical Engineering

[2] Toyohashi University of Technology, Graduate school of Mechanical Engineering

来源：

Keikinzoku Yosetsu/Journal of Light Metal Welding | 2020年 / 58卷 / 10期

关键词：

Built-up edge; Dissimilar welding; FSW; IMC; Scratched groove; Welding tool;

D O I：

10.11283/jlwa.58.12

中图分类号：

学科分类号：

摘要：

Friction stir butt welding between A6061 and S45C was achieved by plunging the tool into aluminum with slightly grinding the steel surface. The formation mechanism of weld interface was investigated by using straight and screw probes. Both of the probes created newly formed surface on the weld interface of steel surface and did not formed thick reaction layer not less than 1 mm on it. Also, the microstructure of aluminum along the weld interface within 3 mm from the weld surface was the similar in both probes. However, the surface morphology on weld interface of steel was diŠerent in each probe. The surface morphology on weld interface for steel by screw probe exhibited a few wide linear scratched grooves along the welding direction, and aluminum was firmly adhered to the inside of these grooves. Thus, the screw probe increased the welding area and the weld strength by fabricating of the grooves. The groove formation is attributed to the built-up edge of steel on the screw probe and material flow around the probe. © 2020 Japan Light Metal Welding and Construction Assoc.. All rights reserved.

引用

页码：382 / 391

页数：9

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