Title:
METHOD FOR PRODUCING NICKEL-BASED ALLOY HIGH TEMPERATURE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2018/092204
Kind Code:
A1
Abstract:
This method for producing a Ni-based alloy high temperature material is characterized in that: the method comprises a step for performing hot die forging of a Ni-based alloy workpiece using prescribed dies and a step for performing solutionizing and aging; the prescribed dies are made of a strong precipitation hardened Ni-based superalloy with a composition in which at least 10 volume% of γ' phase is precipitated at 1050°C, the solid solution temperature of the γ' phase is 1050–1250°C, and the γ' phase has two kinds of precipitation states, intra-particle γ' phase crystal particles that precipitate in parent γ phase crystal particles and inter-particle γ' phase crystal particles that precipitate between said γ phase crystal particles; and the hot die forging step consists of a die/workpiece co-heating base step for heating the workpiece, interposed between the dies, to the forging temperature together with the dies using a heating device, and a hot forging base step for removing the dies and the workpiece heated to the forging temperature from the heating device into a room temperature environment and immediately performing hot forging using a pressing device.
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Inventors:
OTA ATSUO (JP)
IMANO SHINYA (JP)
IMANO SHINYA (JP)
Application Number:
PCT/JP2016/083931
Publication Date:
May 24, 2018
Filing Date:
November 16, 2016
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
C22F1/10; B21J1/02; B21J1/06; B21J5/00; C22C19/05; C22F1/00
Domestic Patent References:
| WO2016152982A1 | 2016-09-29 | |||
| WO2015008343A1 | 2015-01-22 |
Foreign References:
| US20040221927A1 | 2004-11-11 | |||
| JPH0885838A | 1996-04-02 | |||
| JPH0441641A | 1992-02-12 | |||
| JPS60116740A | 1985-06-24 | |||
| JPH02133133A | 1990-05-22 | |||
| JP2015193045A | 2015-11-05 |
Other References:
See also references of EP 3543369A4
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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