Aluminum-silicon alloy foils

Details Aluminum-silicon alloy foils Aluminum-silicon alloy foils

1994-06-27

1997-01-28

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75228, 419 3, 419 28, 419 49, C22C 104, C22C 2104, B22F 314

Patent

active

055979670

ABSTRACT:
Two-phase Al--Si alloy foils are made directly from Al--Si alloy powders by hot pressing. These Al--Si alloy foils are characterized by having a thickness of 0.017 in. or less, and by the fact that they are fine-grained and substantially free of oxygen, nitrogen and deformation-induced defects. The as-pressed Al--Si foils where the primary phase is the Al solid-solution phase are also generally ductile and adapted for subsequent forming operations, including cold rolling. The reduction in thickness imparted in a single pass to an Al-11.6Si alloy foil through cold-rolling was at least about 10%, with up to about 90% reduction in thickness accomplished by a plurality of such passes. These reductions in thickness were accomplished without stress relief annealing, but such annealing may be employed if desirable for microstructural modification.

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