Joining of 3D-printed AlSi10Mg by friction stir welding

被引：0

作者：

Z. Du

M. J. Tan

H. Chen

G. Bi

C. K. Chua

机构：

[1] Nanyang Technological University,Singapore Centre for 3D Printing, School of Mechanical & Aerospace Engineering

[2] Singapore Institute of Manufacturing Technology (SIMTech),undefined

来源：

Welding in the World | 2018年 / 62卷

关键词：

Welding; AlSi10Mg; Joining; Friction stir welding; Selective laser melting; Additive manufacturing;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Friction stir welding is a solid-state welding technology capable of joining metal parts without melting. The microstructure of the material evolved during the process from columnar grain along the thermal gradient in the melt pool to fine equiaxed grains. A significant decrease in microhardness in the stir zone was observed with the lowest hardness at approximately 3 mm from the weld centre. The decrease in the microhardness is mainly attributed to the dissolution of hardening precipitates in the aluminium matrix. Defects in the weld were observed due to insufficient heat input. Heat input could be increased with the increase in rotational speed of the welding tool, with some improvements in strength.

引用

页码：675 / 682

页数：7

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