Methods for repair of single crystal superalloys by laser...

Details Methods for repair of single crystal superalloys by laser... Methods for repair of single crystal superalloys by laser...

2007-07-31

2007-07-31

Hiteshew, Felisa (Department: 1722)

Single-crystal, oriented-crystal, and epitaxy growth processes;

Processes joining independent crystals

C117S004000, C117S007000, C117S009000, C117S903000, C117S904000, C117S905000

Reexamination Certificate

active

10728543

ABSTRACT:
Methods for repair of single crystal superalloys by laser welding and products thereof have been disclosed. The laser welding process may be hand held or automated. Laser types include: CO2, Nd:YAG, diode and fiber lasers. Parameters for operating the laser process are disclosed. Filler materials, which may be either wire or powder superalloys are used to weld at least one portion of a single crystal superalloy substrate.

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Hirose, Nakamura, Yanagawa, and Kobayashi, “Microstructure and Mechanical Property of Laser Welds of Single Crystal Nickel Base Superalloy CMSX-4”, Materials Science Forum, 2003, pp. 4007-4012, vol. 426-432.

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