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Weldability of wrought Haynes 282 repair welded using manual gas tungsten arc welding
Chalmers University of Technology, Department of Industrial and Materials Science, Gothenburg, Sweden.
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0001-9065-0741
2018 (English)In: Welding in the World, ISSN 0043-2288, E-ISSN 1878-6669, Vol. 62, no 1, p. 39-45Article in journal (Refereed) Published
Abstract [en]

The ability of the precipitation hardening superalloy Haynes® 282® to be repaired by multi-pass gas tungsten arc welding is investigated in this study. The repair welding has been carried out on forged discs having four pre weld heat treatments, resulting in different grain sizes and precipitate structures of the base material. Another set of discs has additionally been put through a post weld heat treatment. The tendency to form cracks in the heat-affected zone and the fusion zone has been investigated metallographically. No cracks in the base metal heat-affected zone were found,whereas solidification cracks were present in the weld fusion zone of all tested conditions. While high heat input during welding increased cracking by a factor of 1.5, none of the heat treatments had a measurable influence on the cracking behaviour. Voids with solid state crack-like appearance turned out tobe aluminium-rich oxides being present from the deposition of previous weld deposit layers.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 62, no 1, p. 39-45
Keywords [en]
Nickel alloys, weldability, repair, GTA welding, cracking
National Category
Manufacturing, Surface and Joining Technology Composite Science and Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-11901DOI: 10.1007/s40194-017-0508-zISI: 000428751000005Scopus ID: 2-s2.0-85040840030OAI: oai:DiVA.org:hv-11901DiVA, id: diva2:1164429
Note

First Online: 19 August 2017

Available from: 2017-12-11 Created: 2017-12-11 Last updated: 2018-04-19Bibliographically approved

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Andersson, Joel

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CiteExportLink to record
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