A Study on Fusion Repair Process for a Precipitation Hardened IN738 Ni-Based Superalloy

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 condi...

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Veröffentlicht in:	Journal of engineering for gas turbines and power 2000-07, Vol.122 (3), p.457-461
Hauptverfasser:	Kim, Dae-Young, Hwang, Jong-Hyun, Kim, Kwang-Soo, Youn, Joong-Geun
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Energy Energy. Thermal use of fuels Engines and turbines Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	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]
ISSN:	0742-4795 1528-8919
DOI:	10.1115/1.1287509