CWCO2 laser welding of Al-Mg alloys with filler wires

被引：0

作者：

Yoon, J. W. ^{[1
]}

Wallach, E. R. ^{[2
]}

机构：

[1] Dong Eui Univ, Dept Adv Mat Engn, 24 Gayadong, Pusan, South Korea

[2] Univ Cambridge, Dept Mat Sci & Engn, Cambridge CB2 3QZ, England

来源：

ADVANCED WELDING AND MICRO JOINING / PACKAGING FOR THE 21ST CENTURY | 2008年 / 580-582卷

关键词：

CWCO2 laser welding; Al-Mg alloys; filler wires; mechanical properties; formability; solidification cracking;

D O I：

10.4028/www.scientific.net/MSF.580-582.539

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The CW CO2 laser weldability of various Al-Mg alloys was investigated in terms of weld strength, ductility, Vickers hardness, formability and solidification cracking tendency when both 9 autogenous and wire feed welding were made. Tensile strength of the laser welds was lower than that of the corresponding base metals, and it was linearly proportional to the Mg content of the weld metal. Formability arid ductility of A.1-Mg alloy laser welds were lower than those of corresponding base alloys as well. As for the weld solidification structure, as the Mg content increased in the weld metal, more equiaxed grains developed. Hence, softening of weld metal and solidification cracking were decreased in the weld metal containing higher Mg. Solidification cracking of' Al-Mg alloy laser welds showed the highest susceptibility at 1.6 to 1.9wt.OX. Mg, and it decreased with further increase of Mg content.

引用

页码：539 / +

页数：2