Fabricating an aluminum article.

摘要

An aluminum article having a mirror-like surface and an improved working tool and method for fabricating the article from an aluminum blank, the tool comprising a mechanically strong, abrasion-resistant body against which the aluminum blank is forced under pressure, the tool body comprising a whisker-reinforced, crystalline body consisting essentially of about 5-35 weight % of SiC whiskers and 65-95 weight % of a crystalline matrix. The predominant crystal phase in the crystalline matrix may be a CaO-Al₂O₃-SiO₂ crystal phase.