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Submerged arc welding of stainless steel and the challenge from the laser welding process

McPherson, N.A. and Chi, K. and Baker, T.N. (2003) Submerged arc welding of stainless steel and the challenge from the laser welding process. Journal of Materials Processing Technology, 134 (2). pp. 174-179. ISSN 0924-0136

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Abstract

The welding of austenitic and duplex stainless steels has been reassessed by questioning traditional requirements of the weld metal and/or the heat affected zone (HAZ). The use of high dilution submerged arc welding of austenitic and duplex stainless steels has been shown to produce acceptable properties, despite the high heat input used in some instances. Corrosion characteristics have been established as being acceptable too. These findings have been further validated by examination of the weld region material using thin foil transmission electron microscopy (TEM). This showed that while some intermetallic phases were present, they did not adversely affect the weld metal properties. In addition, an examination has taken place of Nd:YAG laser-welded austenitic and duplex stainless steels, to establish the potential viability of this route compared to the submerged arc welding process. The material properties, including the relevant corrosion testing, have been found to be acceptable. TEM has again shown that some intermetallic phases are present in the weld metal. It has been suggested that a segregation mechanism is responsible for their presence in this case.

Item type: Article
ID code: 5738
Keywords: stainless steel, duplex stainless steel, submerged arc welding, arc welding, laser welding, Mechanical engineering and machinery
Subjects: Technology > Mechanical engineering and machinery
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Professional Services > Centre for Lifelong Learning (Non-Faculty)
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 06 Apr 2008
    Last modified: 06 Dec 2013 18:11
    URI: http://strathprints.strath.ac.uk/id/eprint/5738

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