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
Citations
More filters
Journal ArticleDOI
Electrochemical corrosion behavior and microstructural characteristics of electron beam welded UNS S32205 duplex stainless steel
Jastej Singh,A. S. Shahi +1 more
Journal ArticleDOI
Electrochemical study of passive films formed on welded lean duplex stainless steel
Dalila Chaves Sicupira,Dalila Chaves Sicupira,R. Cardoso Junior,Alexandre Queiroz Bracarense,Gerald S. Frankel,V. de F. C. Lins +5 more
TL;DR: In this paper, the electrochemical and electronic properties of passive films of thick welded joints of UNS S32304 lean duplex stainless steel (LDSS) fabricated by different welding processes, in acidified glycerin, a byproduct of the biodiesel industry, were evaluated using electrochemical impedance spectroscopy and Mott-Schottky measurements.
Journal ArticleDOI
Ameliorative Corrosion Resistance and Microstructure Characterization of 2205 Duplex Stainless Steel by Regulating the Parameters of Pulsed Nd:YAG Laser Beam Welding
TL;DR: In this paper, the microstructural analysis of a laser-weld 2205 duplex stainless steel in an aqueous 3.5% NaCl solution is presented in relation to the efficiency of corrosion.
Journal ArticleDOI
The effect of the solution treatment onto the microstructure and mechanical properties of MAG pulsed welded joints from X2CrNiMoN22-5-3 Duplex stainless steels: Einfluss der Lösungsglühtemperatur auf Gefüge und mechanische Eigenschaften von Metallaktivgas-Schweißverbindungen aus Duplexstahl (X2CrNiMoN22-5-3)
Journal ArticleDOI
Welding-induced mechanical properties in austenitic stainless steels before and after neutron irradiation
TL;DR: The effects of neutron irradiation on the mechanical properties of welded joints made of austenitic stainless steels have been investigated in this article, where the materials are welded AISI 304 and AISIs 347, so-called test weld materials, irradiated with neutrons at 573 K to doses of 0.3 and 1.0 dpa.
References
More filters
Book
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.