High-strength, heat-resistant aluminum alloys and processes for producing articles from these alloys.

摘要

The present invention provides high-strength, heat resistant aluminum alloys having a composition represented by the general formula: AlaMbXd or AlaMbQcXe (wherein M is at least one metal element selected from the group consisting of Cu, Ni, Co and Fe; Q is at least one metal element selected from the group consisting Mn, Cr, Mo, W, V, Ti and Zr; X is at least one metal element selected from the group consisting of Nb, Ta, Hf and Y ; and a, b, c, d and e are atomic percentages falling within the following ranges: 45/= a /= 90, 5 /= b /= 40, 0 c /= 12, 0.5 /= d/= 15 and 0.5 /= e /= 0, the aluminum alloy containing at least 50% by volume of amorphous phase. The aluminum alloys are especially useful as high strength, high heat resistant materials in various applications and since they exhibit a superplasticity in the vicinity of their crystallization temperature, they provide high-strength and heat resistant wrought materials by extrusion, pressing or hot-forging at the temperatures within the range of the crystallization temperature +/- 100 DEG C.