Several fusion repair processes such as laser cladding, laser welding and gas tungsten arc welding have been taken into consideration for repairing IN738 precipitation hardened Ni-based superalloy material. Effect of heat input on weld cracking susceptibility has been studied to obtain optimum condition for crack-free welds. Variations in cracking susceptibility as a function of welding heat input is discussed with reference to metallurgical characteristics of the welds. [S0742-4795(00)02003-2]
A Study on Fusion Repair Process for a Precipitation Hardened IN738 Ni-Based Superalloy
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Indianapolis, IN, June 7–10, 1999; ASME Paper 99-GT-313. Manuscript received by IGTI March 9, 1999; final revision received by the ASME Headquarters May 15, 2000. Associate Technical Editor: D. Wisler.
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Kim , D., Hwang , J., Kim , K., and Youn, J. (May 15, 2000). "A Study on Fusion Repair Process for a Precipitation Hardened IN738 Ni-Based Superalloy ." ASME. J. Eng. Gas Turbines Power. July 2000; 122(3): 457–461. https://doi.org/10.1115/1.1287509
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