The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2015
Filed:
Oct. 08, 2010
Toshiharu Kobayashi, Ryugasaki, JP;
Yutaka Koizumi, Ryugasaki, JP;
Tadaharu Yokokawa, Tsukuba, JP;
Hiroshi Harada, Tsukuba, JP;
Yasuhiro Aoki, Tokyo, JP;
Mikiya Arai, Tokyo, JP;
Shoju Masaki, Tokyo, JP;
Toshiharu Kobayashi, Ryugasaki, JP;
Yutaka Koizumi, Ryugasaki, JP;
Tadaharu Yokokawa, Tsukuba, JP;
Hiroshi Harada, Tsukuba, JP;
Yasuhiro Aoki, Tokyo, JP;
Mikiya Arai, Tokyo, JP;
Shoju Masaki, Tokyo, JP;
National Institute for Materials Science, , JP;
IHI Corporation, , JP;
Abstract
The object of the present invention is to provide an Ni-based single crystal super alloy capable of improving strength by preventing precipitation of a TCP phase at high temperatures. This object is achieved by an Ni-based single crystal super alloy having a composition comprising 5.0-7.0 wt % of Al, 4.0-10.0 wt % of Ta, 1.1-4.5 wt % of Mo, 4.0-10.0 wt % of W, 3.1-8.0 wt % of Re, 0-0.50 wt % of Hf, 2.0-5.0 wt % of Cr, 0-9.9 wt % of Co and 4.1-14.0 wt % of Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities. Furthermore, in this Ni-based single crystal super alloy, when lattice constant of matrix is taken to be a1 and lattice constant of precipitation phase is taken to be a2, a2≦0.999a1.