Abstract
There is still a considerable gap in the definition of the weldability of Duplex Stainless Steel (DSS). A lack of clarity that is explained by the standard specification of the maximum content of equivalent carbon that defines a “weldable” steel coupled with the fact that the alloying elements of DSS exceed this defined limit of weldability. In this paper, welding quality in an inert environment and in presence of chlorides is analyzed with the aim of defining optimum welding conditions of 2001, 2304, and 2205 DSS. The same procedure is followed for a hybrid weld between DSS 2205 and a low carbon mild steel, S275JR. As main output, this study defined the optimal welding conditions with tungsten inert gas without filler for each type of DSS weld that showed excellent anti-corrosion performance, with the exception of the DSS 2205-S275JR weld where widespread corrosion was observed. Additionally, this study established a relationship between the thermal input during welding and the content of alloying elements in defect-free joints. Furthermore, it demonstrated that an increase in ferrite content did not lead to a worse corrosion resistance, as expected after passivation.
Subject
General Materials Science,Metals and Alloys
Reference36 articles.
1. Study of hot deformation behaviour of 2205 duplex stainless steel through hot tension tests
2. Cross-section stability of lean duplex stainless steel welded I-sections
3. Eurocode 2: Design of Concrete Structures—Part 1-1: General Rules and Rules for Buildings,2004
4. Eurocode 3: Design of Steel Structures, Part 1-1: General Rules and Rules for Buildings,2005
5. Eurocode 3: Design of Steel Structures, Part 1-4: General Rules-Supplementary Rules for Stainless Steels,2006
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