ALLOY WITH HIGH HARDNESS, HIGH CORROSION RESISTANCE AND HIGH ABRASION RESISTANCE

Title:

ALLOY WITH HIGH HARDNESS, HIGH CORROSION RESISTANCE AND HIGH ABRASION RESISTANCE

Document Type and Number:

WIPO Patent Application WO/2006/035671

Kind Code:

A1

Abstract:

An alloy with high hardness, high corrosion resistance and high abrasion resistance, consisting of a Cr-Al-Ni alloy having been subjected to aging heat treatment, wherein in the metal structure of cross section of the alloy, the proportion, in area ratio, of (&agr -phase + &gammad ’-phase + &gammad -phase) mixed phases having precipitated in the boundaries of crystal grains constituted of &gammad -phase is ≥ 95%, and wherein with respect to the intensity ratio in X-ray diffractometry of the alloy, I&agr (110)/[I&gammad (200)+I&gammad ’(004)]×100 is in the range of 50 to 200%. Further, there are provided parts of this alloy, alloy materials capable of forming this alloy and a process for producing the alloy. Thus, there become available not only a Cr-Al-Ni alloy with excellent corrosion resistance, hardness, abrasion resistance, mold release easiness, fatigue strength and specular finishability on molded surface but also parts of this alloy, alloy materials capable of forming this alloy and a process for producing the alloy.

Inventors:

ROKUTANDA TAKASHI (JP)
ARAI TOMOHISA (JP)
KUSAKA TAKAO (JP)
JIMBO NOBUYOSHI (JP)

Application Number:

PCT/JP2005/017488

Publication Date:

April 06, 2006

Filing Date:

September 22, 2005

Export Citation:

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Assignee:

TOSHIBA KK (JP)
TOSHIBA MATERIALS CO LTD (JP)
ROKUTANDA TAKASHI (JP)
ARAI TOMOHISA (JP)
KUSAKA TAKAO (JP)
JIMBO NOBUYOSHI (JP)

International Classes:

C22C19/05; C22F1/10; C22F1/00

Domestic Patent References:

WO2003097887A1

2003-11-27

Foreign References:

JP2001062594A

2001-03-13

Other References: