The Furukawa Electric Co., Ltd.

Furukawa-Sky Aluminum Corporation

Kawasaki Steel Corporation

Ryo Shoji

Yoichiro Bekki

Kazuhisa Kashiwazaki

Yoji Hirano

Toshiya Okada

Hirokazu Yamaguchi

Hisashi Tamura

Toshiyuki Kakinoki

Takayuki Sotome

Yoki Hirano

A compressor wheel made of a cast aluminum alloy, wherein the cast aluminum alloy contains Cu 1.4 to 3.2 mass %, Mg 1.0 to 2.0 mass %, Ni 0.5 to 2.0 mass %, Fe 0.5 to 2.0 mass %, and at least one selected from the group consisting of Ti 0.01 to 0.35 mass %, Zr 0.01 to 0.30 mass %, Sc 0.01 to 0.8 mass %, and V 0.01 to 0.5 mass %, with the balance being aluminum and inevitable impurities, with the [(Cu content)+0.5&#xd7;(Mg content)] being 3.8 mass % or less, and with a secondary dendrite arm spacing being 50 &#x3bc;m or less, wherein the cast aluminum alloy is being reinforced by a solution treatment and an aging treatment, and wherein the compressor wheel shows good heat resistant strength, and is for use in a turbocharger.

Cast aluminum alloy compressor wheel for a turbocharger

An aluminum alloy pipe, which is composed of an aluminum alloy containing 2.0% (% by mass, the same hereinafter) to 5.0% of Mg, 0.20% or less of Si, 0.30% or less of Fe, 0.8% or less (including 0%) of Mn, 0.35% or less (including 0%) of Cr, and 0.2% or less (including 0%) of Ti, with the balance being Al and inevitable impurities, wherein the aluminum alloy pipe has a 0.2% yield strength of 60 MPa or more and 160 MPa or less and an average crystal grain diameter of 150 &#x3bc;m or less, and wherein the aluminum alloy pipe has multistage formability.

Aluminum alloy pipe having multistage formability

An aluminum alloy with good cuttability, containing 3 to 6 mass % of Cu, 0.2 to 1.2 mass % of Sn, 0.3 to 1.5 mass % of Bi, and 0.5 to 1.0 mass % of Zn, with the balance being aluminum and inevitable impurities. A method for producing a forged article, in which the aluminum alloy is utilized. A forged article obtained by the method.

Aluminum alloy with good cuttability, method for producing a forged article, and forged article

There is disclosed an aluminum or aluminum alloy extruding die, which comprises Co-group alloy, Ni-group alloy, Cr-group alloy or like high temperature wear-resistant alloy coating applied by thermal spraying on a required die surface portion having been formed in the shape of a rough surface having surface roughness Rz of 5 &mgr;m or more. Preferably, after application of the alloy coating, the die is held at a temperature in the range from 500 to 800&deg; C. for a predetermined period of time or the alloy coating surface is so roughened as to have surface roughness Rz of 10 &mgr;m or less.

Aluminum or aluminum alloy extruding die

A high Mg content Al-Mg alloy sheet for press-forming, having superior strength and deep drawing formability. The alloy has intermetallic compounds containing Cr dispersed into the metal structure thereof. The mean grain diameter of the metal structure ranges from about 5 to 30 .mu.m. The process for manufacturing the alloy is also disclosed. The composition of the alloy includes Al, Mg, Be, Cr, Ti, B, Cu Fe, Si and associated inevitable impurities.

Aluminum alloy sheets excellent in strength and deep drawing formability

A process for producing high Mg content Al-Mg alloy sheet for press forming having a high tensile strength and formability. The maximum grain diameter of the alloy slab is less than 1000 .mu.m. The process consists of the steps of forming the slab, homogenizing, hot rolling, cold rolling and annealing. The composition of the alloy is disclosed as having the elements of Al, Mg, Be, B, Cu, Ti, Si as major components, the balance being inevitable impurities.

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Tokyo, Japan

Ryo Shoji