The Effects of Borides on the Mechanical Properties of TLPB Repaired Inconel 738 Superalloy

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INCONEL 738 superalloy is extensively used in hot sections of aero-engines and gas turbines as a result of its excellent elevated temperature strength and hot corrosion resistance.[1–3] Because of its high manufacturing cost, repairing the alloy components, damaged in the harsh service environment, is of practical interest in industries. To repair a wider (more than 200 lm) gap, the General Electric Company proposed use of activated diffusion healing (ADH) technology, the filler alloy used to mixed high-melting-point and low-melting-point powders, especially when repairing a wide gap (