Title:
NI-BASED ALLOY MEMBER MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/243146
Kind Code:
A1
Abstract:
An Ni-based alloy member manufacturing method according to the present disclosure comprises a casting step, a first strain removing heat treatment step, a solutionizing heat treatment step, and an aging step. In the casting step, an Ni-based alloy casting material is casted, in which a γ'-phase in an amount of 50 vol.% or more can be deposited in a γ-phase in the aging step. In the first strain removing heat treatment step, the Ni-based alloy casting material obtained after the casting step is heated for 1 hour or longer in a first strain removing temperature range of Ts×0.90°C to Ts°C, when Ts°C represents the solid solution temperature of the 'γ-phase. In the solutionizing heat treatment step, the Ni-based alloy casting material obtained after the first strain removing heat treatment step is heated from the first strain removing temperature range to a solutionizing temperature range of higher than Ts+t1°C but not higher than Tm°C, when Tm°C represents the melting point of the γ-phase and t1 represents a temperature 10°C or lower, and the temperature is held in the solutionizing temperature range for 2 hours or longer.
Inventors:
AKAMA DAICHI (JP)
TANEIKE MASAKI (JP)
TANEIKE MASAKI (JP)
Application Number:
PCT/JP2023/005820
Publication Date:
December 21, 2023
Filing Date:
February 17, 2023
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
C22C19/05; C22F1/00; C22F1/10
Domestic Patent References:
| WO2018092204A1 | 2018-05-24 |
Foreign References:
| JP2005539139A | 2005-12-22 | |||
| JP2019112702A | 2019-07-11 | |||
| JPS569349A | 1981-01-30 | |||
| JP2001520942A | 2001-11-06 | |||
| CN113699347A | 2021-11-26 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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