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:
May. 21, 2013
Filed:
Feb. 20, 2008
Hideo Hata, Kobe, JP;
Katsura Kajihara, Kobe, JP;
Shigenobu Namba, Kobe, JP;
Hiroyuki Takeda, Kobe, JP;
Mamoru Nagao, Kobe, JP;
Hideo Hata, Kobe, JP;
Katsura Kajihara, Kobe, JP;
Shigenobu Namba, Kobe, JP;
Hiroyuki Takeda, Kobe, JP;
Mamoru Nagao, Kobe, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
An object of the present invention is to provide an Al—Zn—Mg—Cu 7000-series Al alloy having high ductility as well as having high strength. For attaining this purpose, an Al alloy having a structure in which an inclusion is not included is produced by reducing an amount of oxygen contained in an Al alloy that is obtained by solidifying a preform resulting from rapid solidification by preferably spray forming a molten metal of an Al—Zn—Mg—Cu 7000-series Al alloy with an inert gas. This Al alloy has, as mechanical properties at an ordinary temperature, a tensile strength of 600 MPa or more, and an elongation of 15% or more when the tensile strength is from 600 MPa or more and less than 800 MPa or an elongation of 10% or more when the tensile strength is 800 MPa or more, and is excellent in cold workability such as rollability.