Title:
Ni-BASED ALLOY HAVING EXCELLENT HIGH-TEMPERATURE CREEP CHARACTERISTICS, AND GAS TURBINE MEMBER USING SAME
Document Type and Number:
WIPO Patent Application WO/2016/121495
Kind Code:
A1
Abstract:
Provided is an Ni-based alloy suitable as a member for a gas turbine, the alloy having a composition comprising, in mass%, Cr: 14.0-17.0% (preferably 14.0% to less than 15.0%), Fe: 5.0-9.0%, Ti: 2.2-2.8%, Al: 0.40-1.00%, total of Nb + Ta: 0.7-1.2%, B: 0.001-0.010%, Zr: 0.01-0.15%, Mg: 0.001-0.050%, Mn: 0.01-0.20%, Cu: 0.005-0.300%, Mo: 0.01-0.30%, and C: 0.01-0.05%, with the remainder being Ni and unavoidable impurities, and having excellent high-temperature creep characteristics such that, in creep tests under conditions of a test temperature of 750°C and a test load of 330 MPa, preferably, the creep fracture lifetime is 120 hours or more, and the elongation is 16% or greater.
Inventors:
KOMATSU AKIHIRO (JP)
SUGAHARA KATSUO (JP)
SUGAHARA KATSUO (JP)
Application Number:
PCT/JP2016/050780
Publication Date:
August 04, 2016
Filing Date:
January 13, 2016
Export Citation:
Assignee:
HITACHI METALS MMC SUPERALLOY LTD (JP)
HITACHI METALS LTD (JP)
HITACHI METALS LTD (JP)
International Classes:
C22C19/05; F01D5/28; F01D25/00; F02C7/00
Foreign References:
| JPS5035023A | 1975-04-03 |
Other References:
See also references of EP 3252180A4
Attorney, Agent or Firm:
OKUYAMA, Shoichi et al. (JP)
Okuyama In addition, it is 1. (JP)
Okuyama In addition, it is 1. (JP)
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