High hardness, high corrosion resistance and high wear...

Details High hardness, high corrosion resistance and high wear... High hardness, high corrosion resistance and high wear...

2005-09-22

2011-11-22

Kastler, Scott (Department: 1733)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

Reexamination Certificate

active

08062441

ABSTRACT:
There are provided a high hardness, high corrosion resistance and high wear resistance alloy, wherein the alloy is an aging heat treated Cr(chromium)-Al(aluminum)-Ni(nickel)-base alloy, the proportion of a mixed phase of (α phase+γ′ phase+γ phase) precipitated at grain boundaries of γ phase grains in a metal structure in the cross section of the alloy is not less than 95% in terms of area ratio, and the intensity ratio as measured by X-ray diffractometry of the alloy is not less than 50% and not more than 200% in terms of Iα(110)/[Iγ(200)+Iγ′(004)]×100, and a component comprising this alloy, a material for an alloy which can form this alloy, and a process for producing this alloy. The present invention can provide a Cr—Al—Ni-base alloy possessing excellent corrosion resistance, hardness, wear resistance, releasability, fatigue strength, and planishing property in a molding face, a component comprising this alloy, a material for an alloy which can form this alloy, and a process for producing this alloy.

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International Preliminary Report on Patentability and Written Opinion issued by the International Bureau of WIPO dated Apr. 12, 2007.
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