Heat- and abrasion-resistant aluminum alloy and retainer and val

Details Heat- and abrasion-resistant aluminum alloy and retainer and val Heat- and abrasion-resistant aluminum alloy and retainer and val

1995-08-25

1997-08-19

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75249, C22C 2100

Patent

active

056583664

ABSTRACT:
A heat- and abrasion-resistant aluminum alloy having a grain size of the matrix of .alpha.-aluminum in the alloy not more than 1,000 nm; a grain size of an intermetallic compounds contained in the alloy of not more than 500 nm; and 0.5 to 20% by volume of ceramic particles in the range of 1.5 to 10 .mu.m in particle size and dispersed in the alloy. By this composition, the stress concentration due to the ceramic particles is reduced. Furthermore, because the powders bind well with each other, the heat resistance and abrasion resistance are compatibly improved without decreasing toughness and ductility.

REFERENCES:
patent: 3877884 (1975-04-01), Tawarada et al.
patent: 4623388 (1986-11-01), Jatkav et al.
patent: 5171381 (1992-12-01), Mirchandani et al.
patent: 5199971 (1993-04-01), Akechi et al.
patent: 5264021 (1993-11-01), Kita et al.
patent: 5372775 (1994-12-01), Hayashi et al.
Communication--European Search Report (Application No. EP 95 11 3194) dated 14 Mar. 1996.

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