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Title:
Ni-BASED HEAT-RESISTANT ALLOY
Document Type and Number:
WIPO Patent Application WO/2018/116810
Kind Code:
A1
Abstract:
The present invention relates to a Ni-based heat-resistant alloy that comprises 5.0–50.0 mass% of Ir, 1.0–8.0 mass% of Al, and 5.0–25.0 mass% of W, the remainder being Ni, and that has, in a matrix, γ' phases that have an L12 structure, the Ni-based heat-resistant alloy being characterized by including 0.01–3.0 mass% of Zr and/or 0.01–3.0 mass% of Hf. As compared to Ni-based heat-resistant alloys that are based on conventional Ni-Ir-Al-W alloys, this Ni-based heat-resistant alloy has improved toughness and excellent room temperature strength.

Inventors:
ISHIDA KIYOHITO (JP)
OMORI TOSHIHIRO (JP)
SATO YUTAKA (JP)
SAKAIRI KOICHI (JP)
TANAKA KUNIHIRO (JP)
NAKAZAWA TATSUYA (JP)
Application Number:
PCT/JP2017/043578
Publication Date:
June 28, 2018
Filing Date:
December 05, 2017
Export Citation:
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Assignee:
TOHOKU TECHNO ARCH CO LTD (JP)
TANAKA PRECIOUS METAL IND (JP)
International Classes:
C22C19/03; C22C30/00; C22F1/00; C22F1/10
Domestic Patent References:
WO2014142089A12014-09-18
WO2015146931A12015-10-01
Foreign References:
JP2013095990A2013-05-20
JP2007503530A2007-02-22
JP2008248322A2008-10-16
JP5721189B22015-05-20
Other References:
See also references of EP 3561093A4
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
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