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.

Date of Patent:
Dec. 26, 2006

Filed:

Aug. 09, 2002
Applicants:

Kazuo Kikawa, Saitama, JP;

Takashi Shiraishi, Saitama, JP;

Atsushi Fukatsu, Saitama, JP;

Inventors:

Kazuo Kikawa, Saitama, JP;

Takashi Shiraishi, Saitama, JP;

Atsushi Fukatsu, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A refractory magnesium alloy includes magnesium as a principal ingredient, and an element having a radius 9–14% larger than a magnesium atom and a maximum concentration of 2 mass % or larger in a solid solution with magnesium is mixed in an amount not exceeding a maximum amount that can be homogeneously mixed in the solid solution with magnesium, whereby internal strength of grains thereof is enhanced. Alternatively, gadolinium with a content thereof ranging from 0.5 to 3.8 mass % is added, so that remaining part other than the gadolinium is composed of the magnesium and unavoidable impurities. This magnesium alloy serves to inhibit decrease in proof stress and creep deformation, especially primary creep deformation when used at high temperatures, typically at 200° C. The magnesium alloy may be employed for a structural material for a vehicle, so that a lightweight and heat-resistant structural material can be obtained.


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