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مکانیک::
ماده پرکن
If a filler material is required in the joint, it is fed from a different source during the process.
But the materials exhibit superior properties than IN 625, a commonly used filler material for nickel-based superalloys.
The limitation is predicated upon the use of low-strength weld- ing filler materials and the use of high-energy welding processes, such as gas tungsten arc welding (GTAW) and plasma transfer arc welding (PTAW).
Solid solution strengthened filler materials are employed to assure that sufficient ductility is achieved, and that cracks and microfissures from the welding and subsequent heat treatment are minimized.
The most commonly employed filler material for repair of IN 738 and GTD 111 blades is IN 625.
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