Particle-dispersion type amorphous aluminum-alloy having high st

Details Particle-dispersion type amorphous aluminum-alloy having high st Particle-dispersion type amorphous aluminum-alloy having high st

1991-06-06

1994-06-07

Wyszomierski, George

Metal treatment

Stock

Amorphous, i.e., glassy

420550, 420552, C22C 4508

Patent

active

053186419

ABSTRACT:
Al.sub.100-a-b-c X.sub.a M.sub.b T.sub.c, in which X is Y (yttrium) and/or rare-earth element(s), M is Fe, Co, and/or Ni, and T is Mn, Mo, Cr, Zr and/or V, and, a=0.5-5 atomic %, b=5-15 atomic %, and c=0.2-3.0 atomic %, and, further, X and M fall on and within the hatched region range of the appended FIG. 1, has a complex, amorphous-crystalline structure with an amorphous matrix containing the Al, X, M and T, and minority crystalline phase consisting of aluminum-alloy particles containing super-saturated X, M and T as solutes. The alloy has a high strength due to the dispersed crystalline particles.

REFERENCES:
patent: 4715893 (1987-12-01), Skinner et al.
patent: 4743317 (1988-05-01), Skinner et al.
patent: 5053084 (1991-10-01), Masumoto et al.
Journal of Materials Science, vol. 22, No. 1, Jan. 1987, pp. 202-206 Chapman and Hall Ltd; Y. R. Mahajan et al.: "Rapidly Solidified microstructure of Al-8Fe-4 lanthanide alloys".
Japanese Journal of Applied Physics, vol. 27, No. 3, Mar. 1988, pp. L280-L282; A. Inoue et al.: "New amorphous alloys with good ductility in Al-Y-M and Al-La-M (M.dbd.Fe, Co, Ni or Cu) systems".

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