Title:
A manufacturing method of a super-heat-resistant alloy [machine / nickel]
Document Type and Number:
Japanese Patent JP6252704
Kind Code:
B2
Abstract:
Provide is a production method whereby it is possible to obtain a high-strength Ni-based superalloy which is used in an aircraft engine or a gas turbine for power generation and which has good hot workability and a homogeneous microstructure. The method is a method of producing a Ni-based superalloy in which a hot working material of a Ni-based superalloy is subjected to hot working with a die heated to a temperature, the hot working material having a composition consisting of, in mass%, 0.001 to 0.050% of C, 1.0% to 4.0% of Al, 3.0% to 7.0% of Ti, 12% to 18% of Cr, 12% to 30% of Co, 1.5% to 5.5% of Mo, 0.5% to 2.5% of W, 0.001% to 0.050% of B, 0.001% to 0.100% of Zr, 0% to 0.01% of Mg, 0% to 5% of Fe, 0% to 3% of Ta, 0% to 3% of Nb, and the remainder of Ni and impurities, the method including: a hot working material heating step of heating and holding the hot working material in a temperature range of 950°C to 1150°C for 1 hour or longer; and a hot working step of performing hot working on the hot working material with the die that is heated to the temperature in a range of 800°C to 1150°C.
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Inventors:
Shinichi Kobayashi
Tomonori Ueno
Takehiro Ohno
Tomonori Ueno
Takehiro Ohno
Application Number:
JP2017508429A
Publication Date:
December 27, 2017
Filing Date:
March 24, 2016
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
B21J5/00; B21J1/06; B21J13/02; C22C19/05; C22F1/10
Domestic Patent References:
| JP3174938A |
Foreign References:
| WO2006059805A1 | ||||
| WO2014157144A1 |
Attorney, Agent or Firm:
Shinei Patent Office