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US 4,906,531 AGranted
Alloys strengthened by dispersion of particles of a metal and an intermetallic compound and a process for producing such alloys
AssigneeRyobi Ltd.
InventorsHiroyuki Ohmura, Morris E. Fine, Takao Miyoshi
Life of this patent
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Abstract
A matrix of an Al-Ni base alloy or an Al-Si-Cu base alloy is strengthened by dispersion of particles of Ni, Si or at least one intermetallic compound selected from among AlNi, Al.sub.3 Ni, Al.sub.3 Ni.sub.2 and AlNi.sub.3.
Claims12
A dispersion-hardened alloy comprising:
- a matrix consisting essentially of a material selected from the group consisting of Al-(3.5-8.0) wt% Ni alloys and Al-(3.5-8.0) wt% Ni-(3.0-8.0) wt% Mg alloys;
- and
- strengthening particles dispersed uniformly in said matrix, said particles being particles of Ni or particles of at least one intermetallic compound selected from the group consisting of AlNi, Al.sub.3 Ni, Al.sub.3 Ni.sub.2, and AlNi.sub.3, said particles being incorporated in an amount of about 10 to about 50 wt%.
A dispersion-hardened alloy comprising:
- a matrix comprised of an Al-Ni base alloy;
- and
- strengthening particles dispersed uniformly in said matrix, said particles being particles of Ni or particles of at least one intermetallic compound selected from the group consisting of AlNi, Al.sub.3 Ni, Al.sub.3 Ni.sub.2, and AlNi.sub.3, said particles being incorporated in an amount of about 10 to about 20 wt%.
A dispersion-hardened alloy formed by a process comprising the steps of:
- providing a melt of an Al-Ni base alloy;
- adding directly to said melt strengthening particles of Ni or strengthening particles of at least one intermetallic compound selected from the group consisting of AlNi, Al.sub.3 Ni, Al.sub.3 Ni.sub.2, and AlNi.sub.3 ;
- agitating said melt to mix said particles in said melt without dissolving said particles;
- and
- die-casting the resulting mixture to form a structure in which said particles of Ni or said particles of at least one intermetallic compound are uniformly dispersed in a matrix formed of said Al-Ni base alloy.
2 more elements
Dependencies are inferred from the claim text.