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Title:
Ni-BASED UNIDIRECTIONALLY SOLIDIFIED ALLOY
Document Type and Number:
WIPO Patent Application WO/2017/154809
Kind Code:
A1
Abstract:
The present invention provides a first generation Ni-based unidirectionally solidifed alloy that contains neither Co nor Re. This Ni-based unidirectionally solidified alloy has excellent TMF properties, excellent creep properties, and an excellent environmental resistance and exhibits an excellent cost performance at a practical level. The Ni-based unidirectionally solidified alloy according to one embodiment of the present invention contains 6-12 mass% Cr, 0.4-3.0 mass% Mo, 6-10 mass% W, 4.0-6.5 mass% Al, 0-1 mass% Nb, 8-12 mass% Ta, 0-0.15 mass% Hf, 0.01-0.2 mass% Si, 0-0.04 mass% Zr, 0.01-0.03 mass% B, and 0.01-0.3 mass% C, with the remainder comprising Ni and unavoidable impurities.

Inventors:
KAWAGISHI Kyoko (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
HARADA Hiroshi (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
YOKOKAWA Tadaharu (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
KOIZUMI Yutaka (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
KOBAYASHI Toshiharu (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
SAKAMOTO Masao (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
YUYAMA Michinari (2-1 Sengen 1-chome, Tsukuba-sh, Ibaraki 47, 〒3050047, JP)
Application Number:
JP2017/008676
Publication Date:
September 14, 2017
Filing Date:
March 06, 2017
Export Citation:
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Assignee:
NATIONAL INSTITUTE FOR MATERIALS SCIENCE (2-1 Sengen 1-chome, Tsukuba-shi Ibaraki, 47, 〒3050047, JP)
International Classes:
C22C19/05; F01D5/28; F01D25/00; F02C7/00; C22F1/00; C22F1/10
Domestic Patent References:
WO2006104059A12006-10-05
Foreign References:
JP2014034720A2014-02-24
JP2005097650A2005-04-14
JPS62116748A1987-05-28
Other References:
See also references of EP 3428297A4
Attorney, Agent or Firm:
NISHIZAWA Toshio et al. (Kyugetsu-kanda Bldg. 6F, 2-4-7 Kanda Jimbocho, Chiyoda-k, Tokyo 51, 〒1010051, JP)
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