Journal ArticleDOI
Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds
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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
Citations
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Role of microstructure on corrosion of duplex stainless steel in presence of bacterial activity
TL;DR: In this paper, the results on microbiologically influenced corrosion of UNS S31803 duplex stainless steel (DSS) in as-received, thermally aged and welded conditions in 3.5% NaCl-based medium containing bacteria were presented.
Journal ArticleDOI
Wire arc additive manufacturing (WAAM): A new process to shape engineering materials
TL;DR: This article reviews to bridge knowledge gap concerning the assessment of commercial and efficient aspects of extensive application of WAAM, with an overview on the materials that can be worked upon and some insight on the future prospects of the process.
Journal ArticleDOI
Magnetic detection of sigma phase in duplex stainless steel UNS S31803
TL;DR: In this paper, the effects of sigma phase on the steel properties were investigated, confirming the detrimental effects of very small percentages on corrosion resistance and toughness, and two magnetic methods were used to detect sigma phases: magnetization saturation measurements in a Vibrating Sample Magnetometer and ferritoscope testing.
Journal ArticleDOI
Studies on Effects of Welding Parameters on the Mechanical Properties of Welded Low-Carbon Steel
M. A. Bodude,Ibrahim Momohjimoh +1 more
TL;DR: In this article, the effect of heat input on the mechanical properties of low-carbon steel was studied using two welding processes: Oxy-Acetylene Welding (OAW) and Shielded Metal Arc Welding(SMAW).
Journal ArticleDOI
Investigations on the structure – Property relationships of electron beam welded Inconel 625 and UNS 32205
K. Devendranath Ramkumar,R. Sridhar,Saurabh Periwal,Smitkumar Oza,Vimal Saxena,Preyas Hidad,N. Arivazhagan +6 more
TL;DR: In this paper, the metallurgical and mechanical properties of electron beam welded Ni-based superalloy Inconel 625 and UNS S32205 duplex stainless steel plates have been investigated.
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.