Title:
Ｎｉ基合金部材の製造方法
Document Type and Number:
Japanese Patent JP6793689
Kind Code:
B2
Abstract:
There is provided a method for manufacturing an Ni-based alloy member in which the equilibrium amount of y' phase precipitation at 700°C is from 30 to 70 volume %. The method comprises the steps of: preparing an Ni-based alloy powder having a predetermined chemical composition; forming a precursor body wherein an average grain diameter of the y phase grains is 50 µm or less, by using the Ni-based alloy powder; and heating the precursor body to a temperature at least the y' phase solvus temperature and subsequently slow-cooling the heated precursor body from the temperature to a temperature at least 100°C lower than the y' phase solvus temperature at a cooling rate of 100°C/h or lower. There is obtained a softened body in that the y' phase particles of at least 20 volume % precipitate between/among the y phase grains having an average grain diameter of 50 µm or less.
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Inventors:
Atsuo Ohta
Shinya Konno
Shinya Konno
Application Number:
JP2018135941A
Publication Date:
December 02, 2020
Filing Date:
July 19, 2018
Export Citation:
Assignee:
Mitsubishi Power, Ltd.
International Classes:
C22C1/04; B22F1/00; B22F3/10; B22F3/15; B22F3/24; B22F9/08; C22C19/05; C22F1/10
Domestic Patent References:
| JP2016003374A | ||||
| JP2013199680A |
Foreign References:
| WO2015008343A1 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation