CASTING ALUMINUM ALLOY, CAST COMPRESSOR IMPELLER COMPRISING THE ALLOY, AND PROCESS FOR PRODUCING THE SAME

Title:

CASTING ALUMINUM ALLOY, CAST COMPRESSOR IMPELLER COMPRISING THE ALLOY, AND PROCESS FOR PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2008/001758

Kind Code:

A1

Abstract:

A casting aluminum alloy which contains, in terms of mass%, 3.2-5.0% Cu, 0.8-3.0% Ni, 1.0-3.0% Mg, 0.05-0.20% Ti, and up to 1.0% Si, the remainder being aluminum and incidental impurities. This casting aluminum alloy is used to produce a cast compressor impeller comprising a hub part, a hub-disk part extending from the hub part in the radial directions and having a hub surface and a disk surface, and blade parts disposed on the hub surface. Compared to conventional aluminum alloys, the casting aluminum alloy has a moderate elongation and a high strength at ordinary temperature and has high strength even at high temperatures.

Inventors:

KOGA MASAAKI (JP)

Application Number:

PCT/JP2007/062779

Publication Date:

January 03, 2008

Filing Date:

June 26, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HITACHI METALS PREC LTD (JP)
HITACHI METALS LTD (JP)
KOGA MASAAKI (JP)

International Classes:

C22C21/12; B22D18/04; B22D21/04; C22F1/057; F04D29/02; F04D29/28; C22F1/00

Foreign References:

JP2005206927A	2005-08-04
JPH0339453A	1991-02-20

Other References: