Mechanisms Forming Undercuts during Laser Hybrid Arc Welding

被引：16

作者：

Normana, Peter M. ^{[1
]}

Karlsson, Jan ^{[1
]}

Kaplan, Alexander F. H. ^{[1
]}

机构：

[1] Lulea Univ Technol, S-97187 Lulea, Sweden

来源：

LASERS IN MANUFACTURING 2011: PROCEEDINGS OF THE SIXTH INTERNATIONAL WLT CONFERENCE ON LASERS IN MANUFACTURING, VOL 12, PT A | 2011年 / 12卷

关键词：

laser; hybrid; welding; mill scale; oxides; defects; undercut;

D O I：

10.1016/j.phpro.2011.03.026

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

That the final quality of a welded joint, using a laser hybrid arc process, is sensitive not only to the geometrical joint conditions, but also to the content of elements in the surface itself, is already known. However the description of the mechanisms forming undercut defects is still vague. In the following study two kinds of undercuts were identified. It is shown how the mill scales affects the melt motion and what mechanisms actuate the creation of the defects. The conclusion that surface oxides affect the severity of weld undercuts is straight forward but here also the mechanism is explained.

引用

页码：201 / 207

页数：7

共 20 条

[1] The influence of surface geometry and topography on the fatigue cracking behaviour of laser hybrid welded eccentric fillet joints [J].