Paper Title:
Investigation on Pore Formation during Hybrid Laser-Tungsten Inert Gas Arc Welding of Magnesium Alloy AZ31B
  Abstract

This study seeks to analyze the presence method and quantity of pore during hybrid laser-tungsten inert gas arc (TIG) Welding of Magnesium Alloy AZ31B by radiography, optical microscopy and electron probe microanalysis (EMPA). At the same time, it identifies both the mechanism of pore formation and a remedy for this problem. The experimental results indicate that lacking of shielding gas for laser beam is the dominant cause of macro-porosity formation during the hybrid of laser-TIG welding of magnesium Alloys AZ31B plate, and hydrogen is not main cause to form large pores. A favorable weld without porosity can be obtained by appending lateral shielding gas for laser beam.

  Info
Periodical
Materials Science Forum (Volumes 488-489)
Edited by
W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo
Pages
361-364
DOI
10.4028/www.scientific.net/MSF.488-489.361
Citation
L. M. Liu, G. Song, J. F. Wang, "Investigation on Pore Formation during Hybrid Laser-Tungsten Inert Gas Arc Welding of Magnesium Alloy AZ31B", Materials Science Forum, Vols. 488-489, pp. 361-364, 2005
Online since
July 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Cameron Munro, Allison E. Nolting, Xin Jin Cao, Priti Wanjara
Chapter 24: Welding & Joining
Abstract:High strength low alloy (HSLA) steel, namely HSLA-65, has shown promise as a replacement for more common high strength shipbuilding steels....
2992
Authors: Ion Mitelea, Ion Dragoş Uţu, Daniel Ochian, Mircea Burcă
Abstract:Butt welding by TIG method using a low alloyed steel wire with solid state transformation point, G3Si1, having 1 mm diameter is a feasible...
31