Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds
15 Oct 2003-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing (Elsevier)-Vol. 358, Iss: 1, pp 9-16
TL;DR: 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.
Citations
More filters
TL;DR: In this paper, the phase imbalance between ferrite and austenite was investigated in EBW 2205 duplex stainless steel (DSS) joints pertaining to two different levels of heat input, which exhibited variable microstructural morphology as well as ferrite-toaustenite (α/γ) ratio.
27 citations
TL;DR: In this paper, the effect of filler wire used in hybrid laser arc welding (HLAW) of AISI304 corrosion resistant steel (CRS) was studied, utilizing the scanning electron microscope, X-ray diffraction (XRD), and cyclic potentiodynamic polarization analysis (CPPA).
26 citations
TL;DR: In this article, the effect of annealing temperature in the range from 1000 to 1200°C on the pitting corrosion behavior of duplex stainless steel UNS S32304 was investigated by the potentiodynamic polarization and potentiostatic critical pitting temperature techniques.
26 citations
TL;DR: It is demonstrated that silver-doped 2205 DSS produces an excellent bacteria-inhibiting effect against Escherichia coli and Staphylococcus aureus.
26 citations
TL;DR: In this paper, the effects of post weld heat treatment (PWHT) on friction welded UNS S31803 duplex stainless steel samples at three different temperatures namely 1080°C, 1150°C and 1200°C followed by water quenching were studied.
26 citations
References
More filters
Book•
01 Jan 1997
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.
Abstract: Developments, grades and specifications Alloy design Microstructure Forming and machining Physical and mechanical properties Corrosion Stress corrosion cracking Welding metallurgy Welding processes Weld properties Non-destructive testing of welds Applications Service experience.
449 citations