#7410. Dissimilar welding of cast alloy 706 with different prior heat treatment conditions and austenitic stainless steel 321

October 2026publication date
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Journal’s subject area:
Mechanical Engineering;
Mechanics of Materials;
Condensed Matter Physics;
Materials Science (all);
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Abstract:
The welding of dissimilar joints is most common in the aerospace applications, especially, cast nickel-based superalloys are welded with austenitic stainless steel for high-temperature service conditions. It is well known that heat-affected zone cracking is a common phenomenon while welding age-hardened alloy 706. In this study, an alloy equivalent to cast alloy 706 subjected to three different heat treatment cycles and was welded with annealed austenitic stainless steel.
Keywords:
Alloy 706; Gas tungsten arc welding; Heat treatment; Heat-affected zone liquation cracking; Laves phase

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