Hypereutectic aluminum-silicon alloy having refined primary sili

Details Hypereutectic aluminum-silicon alloy having refined primary sili Hypereutectic aluminum-silicon alloy having refined primary sili

1991-05-20

1993-08-10

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

With casting or solidifying from melt

148698, 148700, 148702, 148438, 148439, 148440, 420548, 420546, 420534, C22C 2102, C22C 2104

Patent

active

052345149

ABSTRACT:
A hypereutectic aluminum-silicon casting alloy having a refined primary silicon particle size and a modified silicon phase in the eutectic. The aluminum base alloy includes from 19% to 30% by weight of silicon and also contains 0.005% to 0.06% by weight of phosphorus, and 0.15% to 1.15% by weight of titanium. On cooling from solution temperature, the phosphorus serves as an active nucleant for the primary silicon phase, while at a lower temperature, a titanium-aluminum intermetallic compound is formed that is sheathed by the pseudoprimary .alpha.-aluminum and the sheathed particles act as a nucleant to modify the acicular silicon phase in the eutectic. The resulting alloy has primary silicon refinement coupled with eutectic silicon modification.

REFERENCES:
patent: 4113473 (1978-09-01), Gauvry et al.
patent: 4603665 (1987-08-01), Hesterberg et al.
patent: 4821694 (1989-04-01), Hesterberg et al.
patent: 4902475 (1990-02-01), Apelain et al.
patent: 4966220 (1990-10-01), Hesterberg et al.
patent: 4969428 (1990-11-01), Donahue et al.
Bakurdzhiev, I.; Kovachev, V.; Vangelov, A. "Study of the effect of complex alloying and modification on the mechanical properties of a hypereutectic aluminum-ailicon alloy at elevated temperatures", Mashinostroene, 29(12), 538-41, 1980 (only abstract is disclosed).

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