Comparative welding study of metal matrix composites with the MIG welding process, using direct and indirect electric arc

Abstract

where the values of log K Mn(Fe) , e Mn O , e Ni Mn , and e Ni O are Ϫ1.72, Ϫ0.021, Ϫ0.0072, and 0.006, respectively, from JSPS. [7] The thermodynamics of manganese deoxidation equilibrium in Fe-36 pct Ni alloy were studied by using a cold crucible at 1773 K and the following conclusions were obtained. 1. The interaction parameter, e Mn O , and equilibrium constant for Fe-36 pct Ni base were determined in the range of 0.1 Ͻ [pct Mn] Ͻ 5: e Mn O ϭ Ϫ0.050 Ϯ 0.027, log K Mn ϭ Ϫ1.90 Ϯ 0.070 2. The calculated equilibrium relationship between manganese and oxygen in Fe-36 pct Ni alloy is in good agreement with the experimental results.

Influence of Welding Process on Microstructure and Properties of Laser Welding of SiCp/6061 Al Matrix Composite

“…Worldwide scholars have focused on the joining of SiC p / AMCs using fusion welding such as TIG, PAW, MIG, LBW, EBW, et al (Urena et al, 2000;García et al, 2002;Chen et al, 2006;Bassani et al, 2007;Lei et al, 2011) due to characteristics of simple equipment, strong versatility and low cost for fusion welding. However, following issues will be appeared during the fusion welding of SiC p /AMCs: 1) high viscosity in the molten pool 2) rejection of SiC particles by the solidification front 3) emergence of defects such as cracks, pores and low-density microstructure 4) weakened reinforcement effect of SiC due to the formation of brittle Al 4 C 3 compounds resulted from severe reaction between SiC with molten aluminum 5) high residual stresses at the Al matrix/SiC particles interface after welding thermal cycling.…”

Sulphide stress cracking behaviour of weldments produced by indirect electric arc welding

“…The indirect electric arc (IEA) technique is a novel welding process that has been used successfully to join metal-matrix composites. [1][2][3] It is a variation of the metal inert gas (MIG) process in which fusion of the base metal is not caused by direct contact with the electric arc. Instead, the electric arc is established between the filler metal and feed metal, in plate form, placed over the base metal (Fig.…”