Patent number: 5074935
Abstract: The present invention provides an amorphous alloy having superior mechanical strength, corrosion resistance for formability, at a relatively low cost. The amorphous alloy is a composition represented by the general formula: Al.sub.100-x-y M.sub.x Ln.sub.y wherein M is at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Hf, Ta and W; Ln is at least one element selected from the group consisting of Y, La, Ce, Nd, Sm, Gd, Tb, Dy, Ho and Yb or misch metal (Mm) which is a combination of rare earth elements; and x and y are, in atomic percentages: 0<x.ltoreq.55 and 30.ltoreq.y.ltoreq.90, preferably 0<x.ltoreq.40 and 35.ltoreq.y.ltoreq.80, and more preferably 5<x.ltoreq.40 and 35.ltoreq.y.ltoreq.70, with the proviso that 100-x-y.gtoreq.5 the alloy having at least 50% (by volume) of an amorphous phase.
Type:
Grant
Filed:
June 22, 1990
Date of Patent:
December 24, 1991
Assignees:
Tsuyoshi Masumoto, Teikoku Piston Ring Co., Ltd., Yoshida Kogyo K.K.
Inventors:
Tsuyoshi Masumoto, Akihisa Inoue, Hitoshi Yamaguchi, Kazuhiko Kita, Hideki Takeda