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:
Jun. 14, 2011
Filed:
Oct. 14, 2004
Hajime Ikuno, Owariasahi, JP;
Hiroshi Hohjo, Nagoya, JP;
Yoshihiko Sugimoto, Nagoya, JP;
Isamu Ueda, Kasugai, JP;
Hiroaki Iwahori, Aichi-ken, JP;
Hajime Ikuno, Owariasahi, JP;
Hiroshi Hohjo, Nagoya, JP;
Yoshihiko Sugimoto, Nagoya, JP;
Isamu Ueda, Kasugai, JP;
Hiroaki Iwahori, Aichi-ken, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-ken, JP;
Abstract
Aluminum alloys and castings are provided that have excellent practical fatigue resistances. The alloy includes, based upon 100 mass %, 4-12 mass % of Si, less than 0.2 mass % of Cu, 0.1-0.5 mass % of Mg, 0.2-3.0 mass % of Ni, 0.1-0.7 mass % of Fe, 0.15-0.3 mass % of Ti, and the balance of aluminum (Al) and impurities. The alloy has a metallographic structure, which includes a matrix phase primarily of α-Al and a skeleton phase crystallizing around the matrix phase in a network shape. The matrix phase is strengthened by precipitates containing Mg. Because of the strengthened matrix phase, and the skeleton phase that surrounds it, the castings have high strength, high fatigue strength, and high thermo-mechanical fatigue resistance.