Patent ID: 6231808
Filing Date: 2001-05-15
Classification: B22F,C22C,C22F

Abstract:
A tough and heat resisting aluminum alloy comprising aluminum, at least one transition metal element and at least one rare earth element, and having a modulated structure which comprises an aluminum matrix and an intermetallic compound precipitated to form a network in said aluminum matrix, wherein said network comprises intermetallic compound bands each having a width of 10 to 500 nm and being located at a spacing with neighboring bands of from 10 to 100 nm,wherein said aluminum alloy has a composition represented by formula:Al.sub.a X.sub.b Z.sub.cwherein X represents at least one element selected from the group consisting of Ti, V, Cr, Mo, W, Nb, Ta and Zr; Z represents at least one element selected from the group consisting of Y, La, Ce, Sm, Nd and Mm; a, b and c represent atomic percentages in which a is from 90 to 99; b is from 0.5 to 5; and c is from 0.5 to 5.