Beryllium-containing alloys of aluminum and semi-solid processing of such alloys
AssigneeBrush Wellman Inc.
InventorsJames M. Marder, Warren J. Haws
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Abstract
Disclosed is a practical aluminum based alloy containing 1 to 99 weight percent beryllium, and improved methods of semi-solid processing of aluminum alloys containing beryllium. The present methods avoid molten beryllium, agitation of molten aluminum-beryllium alloys and the need for introducing shear forces by utilizing atomized or ground particles of beryllium mixed with solid, particulate or liquidus aluminum.
Claims18
An aluminum alloy containing beryllium consisting of from about 5 to about 80 weight percent beryllium with the balance an aluminum component, wherein the alloy has non-dendritic beryllium microstructure, said beryllium is equiaxed, solid beryllium dispersed in said aluminum component, and said aluminum component is substantially pure aluminum.
An method for making an aluminum alloy containing beryllium comprising the steps of:
- (a) providing an aluminum component in powder form and a beryllium component in powder form;
- (b) mixing said aluminum and beryllium components;
- and
- (c) melting said aluminum component at a temperature above about 645.degree. C. but not to exceed about 700.degree. C. such that said beryllium component does not melt.
Dependencies are inferred from the claim text.