Process for the heat treatment of a Ni-base heat-resisting alloy

Details Process for the heat treatment of a Ni-base heat-resisting alloy Process for the heat treatment of a Ni-base heat-resisting alloy

1999-10-28

2000-10-17

Jenkins, Daniel J.

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148675, 420447, 420448, 420449, 420450, 420451, C22F 110, C22C 1905

Patent

active

06132535&

ABSTRACT:
Provided is a process for improving alloy properties which can improve the high-temperature ductility of a Ni-base heat-resisting alloy while maintaining its excellent high-temperature strength and weldability. Specifically, it relates to a process for the heat treatment of a Ni-base heat-resisting alloy having a specific composition which comprises the steps of subjecting the alloy to a first-stage solution treatment by keeping it at a specific temperature for a specific period of time; cooling the alloy to a second-stage solution treatment temperature at a specific cooling rate; subjecting the alloy to a second-stage solution treatment by keeping it at a specific temperature for a specific period of time; cooling the alloy rapidly to room temperature at a specific cooling rate; subjecting the alloy to a stabilizing treatment by keeping it at a specific temperature for a specific period of time; cooling the alloy rapidly to room temperature at a specific cooling rate; and subjecting the alloy to an aging treatment by keeping it at a specific temperature for a specific period of time.

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