Process for welding nickel-based superalloys
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United States of America Patent
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Feb 14, 1989
Issued Date -
N/A
app pub date -
Jun 1, 1987
filing date -
Jun 1, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preventing crack formation in nickel alloy substrates having a gamma-prime phase includes providing a substrate comprised of a nickel alloy having a gamma-prime phase. A portion of the substrate is irradiated with a laser beam and thereby forms a molten pool of the alloy. A supply of coating particles are dispersed within the pool, the particles are comprised of a nickel alloy having gamma-prime forming constitutents. Rapid relative motion between the beam and the pool is effected so that the pool rapidly solidifies and thereby minimizes the formation of gamma-prime therein and adjacent thereto.
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