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:
Jul. 26, 1994
Filed:
Sep. 25, 1992
Tsuyoshi Masumoto, Sendai-shi, Miyagi, JP;
Akihisa Inoue, Sendai-shi, Miyagi, JP;
Kenji Higashi, Tondabayashi-shi, Osaka, JP;
Katsumasa Ohtera, Yamato, JP;
Makoto Kawanishi, Kurobe, JP;
Other;
Yoshida Kogyo K.K., Toyko, JP;
Abstract
A superplastic aluminum-based alloy material consisting of a matrix formed of aluminum or a supersaturated aluminum solid solution, whose average crystal grain size is 0.005 to 1 .mu.m, and particles made of a stable or metastable phase of various intermetallic compounds formed of the main alloying element (i.e., the matrix element) and the other alloying elements and/or of various intermetallic compounds formed of the other alloying elements and distributed evenly in the matrix, the particles having a mean particle size of 0.001 to 0.1 .mu.m. The superplastic aluminum-based alloy material is produced from a rapidly solidified material consisting of an amorphous phase, a microcrystalline phase or a mixed phase thereof by optionally heat treating the material at a prescribed temperature for a prescribed period of time and then subjecting it to a single or combined thermomechanical treatment. The superplastic aluminum-based alloy material of the present invention is suited for superplastic working.