Title:
AUSTENITIC HEAT-RESISTANT ALLOY AND WELDED STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2017/002524
Kind Code:
A1
Abstract:
Provided is an austenitic heat-resistant alloy capable of stably achieving excellent crack resistance and high-temperature strength. This austenitic heat-resistant alloy has a chemical composition including, in mass%, 0.04-0.15% C, 0.05-1% Si, 0.3-2.5% Mn, equal to or less than 0.04% P, equal to or less than 0.0015% S, 2-4% Cu, 11-16% Ni, 16-20% Cr, 2-5% W, 0.1-0.8% Nb, 0.05-0.35% Ti, 0.001-0.015% N, 0.0005-0.01% B, equal to or less than 0.03% Al, equal to or less than 0.02% O, 0-0.02% Sn, 0-0.5% V, 0-2% Co, 0-5% Mo, 0-0.02% Ca, 0-0.02% Mg, 0-0.2% REM, and Fe and impurities as the remainder, and the austenitic heat-resistant alloy has a structure having a crystal grain size of equal to or greater than 2.0 to less than 7.0 in terms of grain size number as defined by ASTM E112.
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Inventors:
HIRATA HIROYUKI (JP)
OKADA HIROKAZU (JP)
JOTOKU KANA (JP)
ISEDA ATSURO (JP)
ONO TOSHIHIDE (JP)
TANAKA KATSUKI (JP)
OKADA HIROKAZU (JP)
JOTOKU KANA (JP)
ISEDA ATSURO (JP)
ONO TOSHIHIDE (JP)
TANAKA KATSUKI (JP)
Application Number:
PCT/JP2016/066462
Publication Date:
January 05, 2017
Filing Date:
June 02, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C22C38/00; C22C38/58; C21D8/00
Foreign References:
| JP2013076156A | 2013-04-25 | |||
| JP2013133533A | 2013-07-08 | |||
| JP2001262283A | 2001-09-26 |
Other References:
See also references of EP 3318651A4
Attorney, Agent or Firm:
UEBA, Hidetoshi et al. (JP)
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