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Title:
偏析特性に優れるNi基耐熱合金,ガスタービン部材およびスタービン
Document Type and Number:
Japanese Patent JP5216839
Kind Code:
B2
Abstract:
A Ni-based heat resistant alloy has a composition of, by mass percent, carbon: 0.001 to 0.1%, chromium: 16 to 22%, aluminum: 0.5 to 1.5%, molybdenum: 0.1 to 2.0%, tungsten: 0.1 to 6.0%, niobium: 3.5 to 5.5%, titanium: 0.8 to 3.0%, iron: 16 to 20%, and the balance being nickel and inevitable impurities. A parameter Ps indicating a segregation tendency is in a range of Ps ‰¥ -3.5. The parameter Ps is represented by Formula (1). Ps = 1.05 × Al content + 0.6 × Ti content - 0.8 × Nb content - 0.3 × Mo content

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Inventors:
Jun Sato
Shinya Konno
Hiroyuki Doi
Application Number:
JP2010268921A
Publication Date:
June 19, 2013
Filing Date:
December 02, 2010
Export Citation:
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Assignee:
株式会社日立製作所
International Classes:
C22C19/05; F01D5/02; F01D5/28; F01D25/00; F02C7/00
Domestic Patent References:
JP2005060826A
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki



 
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