Journal ArticleDOI
Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds
TLDR
In this article, a low heat input process viz., EBW and another commonly employed process, gas tungsten-arc welding have been employed for welding of duplex stainless steels with and without nickel enhancement.Abstract:
The excellent combination of strength and corrosion resistance in duplex stainless steels (DSS) is due to their strict composition control and microstructural balance. The ferrite–austenite ratio is often upset in DSS weld metals owing to the rapid cooling rates associated with welding. To achieve the desired ferrite–austenite balance and hence properties, either the weld metal composition and/or the heat input is controlled. In the current work, a low heat input process viz., EBW and another commonly employed process, gas tungsten-arc welding have been employed for welding of DSS with and without nickel enhancement. Results show that (i) chemical composition has got a greater influence on the ferrite–austenite ratio than the cooling rate, (ii) and even EBW which is considered an immature process in welding of DSS, can be employed provided means of filler addition could be devised.read more
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Powder Metallurgy Association of India
Shri Bijoy Sarma,Vice President,Shri Bal Ginde,Shri N. Chandrachud,Shri N. Gopinath,Shri U. Basak,Shri Pns Sivan,Honorary Treasurer +7 more
Journal ArticleDOI
Constitutive model of duplex stainless steel S22053 and its weld under cyclic large plastic strain loading
TL;DR: In this paper , the authors investigated the mechanical properties and constitutive models of duplex stainless steel S22053 under cyclic large plastic strain loading and cyclic loading and the failure modes and stress-strain curves of the specimens were analyzed.
Journal ArticleDOI
Experimental and finite element investigation on hybrid GTAW-GMAW of duplex stainless steel
Qualitative and Quantitative Assessment of γ and δ Phases in Duplex Stainless Steel Weldments by the X-Ray Diffraction Technique
TL;DR: In this article, the authors focused on the quantitative and qualitative characterization of austenitic-ferritic stainless steel welds by the X-ray diffraction technique and showed that the presence of two phases, austenite γ and ferrite δ without any precipitation of secondary phases either in the base metal BM or in the two welded zones.
Journal ArticleDOI
Low cycle fatigue analysis of heat treated duplex stainless steel
TL;DR: Duplex stainless steels (DSS) have become more attractive than single-phase austenitic and ferrite grades in industrial application due to their high strength and corrosion resistance in chloride-c as discussed by the authors.
References
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Duplex stainless steels : microstructure, properties and applications
TL;DR: In this paper, the authors present a non-destructive testing of welds for service experience, based on the application of service experience in metallurgy and metallurgical applications.