Effects of Gas Metal Arc Welding Techniques on the Mechanical Properties of Duplex Stainless Steel

Abstract

The study has compared the effect of gas metal arc welding techniques on some mechanical properties of duplex stainless steel. The samples after welded were given post weld heat treatment (quenching in engine and neem oil). After the analyses, it was established that duplex stainless steel can be weld successfully using gas metal arc welding process (GMAW). Both Lubricating oil and neem oil can serve as quenching medium for post welding heat treatment of duplex stainless steel. The results of the studies also show that welding and heat treatment really affect the mechanical properties of the alloy; the control strength was 811.47 MN/m 2 while that of the welded samples ranged from 177.07 to 257.32 MN/m 2 . The control impact energy was 162.70 J, while that of the welded samples ranged from 38.64 J to 56.20 J. The research also shows that the stress relief heat treatment gives better strength (A 3 = 331 MN/m 2 ) compared to those that were quenched in lubricating oil (A 2 = 329 MN/m 2 ) and neem oil (A 1 = 222 MN/m 2 ), but the reverse is the case in terms of toughness.

Gas Metal Arc Weld Cladding and its Anti-Corrosive Performance- A Brief Review

“…The post weld heat treatment of welded samples was carried out (quenching in engine and neem oil) and the result indicated that the post heat treatment process influenced the mechanical property of clad part made by GMAW a lot. The research also showed that the stress relief heat treatment gave better strength up to (331 MN/m 2 ) than that were quenched in lubricating oil (329 MN/m 2 ) and neem oil (222 MN/m 2 ), but the reverse trend was noticed in terms of toughness (Ibrahim et al, 2013).…”

Influence of shot peening parameters on high‐cycle fatigue strength of steel produced by powder metallurgy process

“…c according to BS 18 standard. Proportional sample is given by the relationship: …”

Effect of Neem and Lubricating Oils (85w90) as Quenchants on the Mechanical Properties of Gas Metal Arc Welded Duplex Stainless Steel.

“…Duplex stainless steels are mostly selected because of their combination of high strength and corrosion resistance. Their full potential is used in locations where the material comes into contact with salt water, or where high concentrations of chlorides are present in the ambient air or where de-icing salts are of a concern [Ibrahim et al, 2013].…”