Title:
Ｎｉ基鍛造合金材の製造方法
Document Type and Number:
Japanese Patent JP6942871
Kind Code:
B2
Abstract:
To provide a method for manufacturing an Ni group forged alloy material having balanced tensile characteristics and creep characteristics at a higher level than a conventional level.SOLUTION: A method for manufacturing an Ni group forged alloy material includes: a dissolving/casting step of dissolving/casting a raw material and forming an alloy ingot; a pseudo homogenization heat treatment step of subjecting the alloy ingot to soaking treatment of heating it to a predetermined temperature and then cooling it to 700°C, and preparing a pseudo homogenized alloy ingot in which eutectic reaction γ' phase grains in a range of 1-15 vol.% are left between crystal grains of a γ phase; a forging step of forging the pseudo homogenized alloy ingot, and forming a forging molding material having an average particle diameter of the eutectic reaction γ' phase grains of 2-40 μm; a solution/crystal coarsening heat treatment step of heating the forging molding material, subjecting a precipitation phase other than the eutectic reaction γ' phase grains to solution heat treatment, and preparing a re-crystallization coarsening material obtained by re-crystallization coarsening the γ phase so as to have an average crystal particle diameter of 15-200 μm; and an age heat treatment step of precipitating an age precipitation γ' phase particles in the γ phase of the re-crystallization coarsening material.SELECTED DRAWING: Figure 1
Inventors:
Takashi Shibayama
Shinya Konno
Shinya Konno
Application Number:
JP2020173888A
Publication Date:
September 29, 2021
Filing Date:
October 15, 2020
Export Citation:
Assignee:
Mitsubishi Power, Ltd.
International Classes:
C22F1/10; C22C19/05
Domestic Patent References:
| JP60228659A | ||||
| JP2012177370A | ||||
| JP2011052323A | ||||
| JP2011012345A |
Foreign References:
| WO2015008343A1 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation