Title:
nickel machine alloy product and its manufacturing method
Document Type and Number:
Japanese Patent JP5985754
Kind Code:
B2
Abstract:
An Ni-based alloy product is a production base material for a Ni-based alloy member in which a y' (gamma prime) phase that is thermodynamically stable in a temperature range of 700 to 900°C is present at a ratio of 36 to 60 volume %. The Ni-based alloy product has a two-phase structure composed of a γ phase and γ' phase that is incoherent in crystalline lattice parameters with the γ' phase. The Ni-based alloy product has a two-phase structure composed of a crystalline grains of a γ (gamma) phase and crystalline grains of the γ' (gamma prime) phase that is incoherent in crystalline lattice parameters with the γ phase, the incoherent γ' phase being present at a ratio of 20 volume % or higher in the two-phase structure. The Ni-based alloy product has a Vickers hardness equal to or less than 400 Hv. A method for producing the Ni based alloy product has the following steps:melting a Ni-based alloy material having a composition such that a γ' phase at a ratio of 36 to 60 volume % can be precipitated; andhot-forging the Ni-based alloy material obtained through the melting step at temperatures equal to or higher than 1000°C, and within a temperature range of coexisting γ' phase and γ phase, and in a state of the γ' phase precipitating at a ratio of 10 volume % or higher,wherein during the step of hot-forging, the temperature of the hot-forging is lowered to a temperature by 100°C or more below a hot-forging start temperature.
More Like This:
Inventors:
Shinya Konno
Hiroki Kamoshida
Hiroki Kamoshida
Application Number:
JP2015527095A
Publication Date:
September 06, 2016
Filing Date:
July 17, 2013
Export Citation:
Assignee:
Mitsubishi Hitachi Power Systems Co., Ltd.
International Classes:
C22C19/05; B21J5/00; C22F1/10
Domestic Patent References:
| JP2006009143A | 2006-01-12 | |||
| JPS63145737A | 1988-06-17 | |||
| JPH0297634A | 1990-04-10 |
Foreign References:
| WO2010038826A1 | 2010-04-08 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation
Previous Patent: The brush tools of a skin treatment device
Next Patent: MANUFACTURE OF FELT MATERIAL LINED METALLIC TABLE FLAP
Next Patent: MANUFACTURE OF FELT MATERIAL LINED METALLIC TABLE FLAP