Effect of changes in the composition of the gas shielding medium on the properties of arc welded joints in aluminium alloys

被引：5

作者：

Novikov, O.M. ^{[1
]}

Persidskii, A.S. ^{[1
]}

Rad'ko, E.P. ^{[2
]}

Baranovskii, A.V. ^{[3
]}

Khasyanov, B.A. ^{[3
]}

机构：

[1] Russian Aircraft Construction Corporation MiG, Moscow

[2] MGIU Company, Hamburg

[3] V.V. Chernyshev Moscow Machine Building Enterprise, Moscow

来源：

Welding International | 2013年 / 27卷 / 03期

关键词：

arc welding; composition of gaseous medium; non-fusible electrode; protective medium; resistance; structure;

D O I：

10.1080/09507116.2012.715891

中图分类号：

学科分类号：

摘要：

The results of investigations of the effect of variable composition of the gas shielding medium on the energy parameters and the cross section of the arc column in a shielding gas are presented. It is shown that at the periodic variation of the composition of the shielding gas from helium to argon the pressure of the welding arc increases in cycles for a short period of time and welding current surges. Periodic changes in the composition of the gas shielding medium in the arc zone results in refining of the structure of the weld metal and increase the solidification cracking resistance of aluminium alloys. © 2013 Copyright Taylor and Francis Group, LLC.

引用

页码：222 / 225

页数：3