Weldability of wrought Haynes® 282® repair welded using manual gas tungsten arc welding
Journal article, 2018

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 to be aluminium-rich oxides being present from the deposition of previous weld deposit layers.

Weldability

Repair

GTA welding

Nickel alloys

Cracking

Author

Fabian Hanning

Chalmers, Industrial and Materials Science, Materials and manufacture

Joel Håkan Andersson

University West

Welding in the World, Le Soudage Dans Le Monde

0043-2288 (ISSN)

Vol. 62 1 39-45

Subject Categories

Manufacturing, Surface and Joining Technology

Areas of Advance

Materials Science

DOI

10.1007/s40194-017-0508-z

More information

Latest update

3/28/2018