Title:
Ni-BASED SUPER-HEAT-RESISTANT ALLOY FOR AIRCRAFT ENGINE CASES, AND AIRCRAFT ENGINE CASE FORMED OF SAME
Document Type and Number:
WIPO Patent Application WO/2020/067239
Kind Code:
A1
Abstract:
The present invention provides: an Ni-based super-heat-resistant alloy for aircraft engine cases, which has excellent high-temperature characteristics such as tensile characteristics and low cycle fatigue characteristics in a high temperature range, while exhibiting excellent processability; and an aircraft engine case which is formed of this Ni-based super-heat-resistant alloy for aircraft engine cases. An Ni-based super-heat-resistant alloy suitable for aircraft engine cases according to the present invention has a composition that contains, in mass%, 4.0-11.0% of Co, 12.0-17.0% of Cr, 2.0-4.0% of Al, 2.0-4.0% of Ti, 4.6-6.7% of (Al + Ti), more than 5.5% but 10.0% or less of Mo:, more than 0% but 4.0% or less of W, 0.001-0.040% of B, 0.02-0.06% of C, from 0% to 0.05% (inclusive) of Zr, from 0% to 0.005% (inclusive) of Mg, from 0% to 0.01% (inclusive) of P, from 0% to 1.0% (inclusive) of Nb, from 0% to 1.0% (inclusive) of Ta and from 0% to 2.0% (inclusive) of Fe, with the balance being made up of Ni and unavoidable impurities.
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Inventors:
MATSUI TAKANORI (JP)
FUKUDA TADASHI (JP)
FUKUDA TADASHI (JP)
Application Number:
PCT/JP2019/037757
Publication Date:
April 02, 2020
Filing Date:
September 26, 2019
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C22C19/05; F01D25/24; F02C7/00; C22F1/00; C22F1/10
Domestic Patent References:
| WO2015008343A1 | 2015-01-22 |
Foreign References:
| JP2013159842A | 2013-08-19 | |||
| JP2014005528A | 2014-01-16 | |||
| JP2015129341A | 2015-07-16 | |||
| JP2015165046A | 2015-09-17 | |||
| JP2015199980A | 2015-11-12 | |||
| JP2005525470A | 2005-08-25 |
Other References:
See also references of EP 3739070A4
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
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