Metal treatment – Stock – Age or precipitation hardened or strengthened
Patent
1995-01-09
1997-03-04
Simmons, David A.
Metal treatment
Stock
Age or precipitation hardened or strengthened
148403, 148416, 148437, 148438, 420528, 420529, 420538, 420550, C22C 2100
Patent
active
056075235
ABSTRACT:
A high-strength aluminum-based alloy consisting of a composition represented by the general formula: Al.sub.bal Q.sub.a M.sub.b X.sub.c, wherein Q is at least one element selected from the group consisting of Mn and Cr; M is at least one element selected from the group consisting of Co, Ni, and Cu; X is at least one of rare earth elements including Y, or Misch metal (Mm); and a, b and c are, in atomic percentages, 1.ltoreq.a.ltoreq.7, 0.5.ltoreq.b.ltoreq.5, and 0<c.ltoreq.5, the aluminum-based alloy containing quasicrystals in the structure thereof. The quasicrystals may be of an icosahedral phase (I phase), a decagonal phase (D phase), or a crystalline phase akin thereto and the structure may comprise the quasicrystalline phase and a phase formed of any one of an amorphous phase, aluminum, and a supersaturated aluminum solid solution or a composite (mixed phase) thereof. The alloy structure may further contain intermetallic compounds formed of aluminum and other elements and/or intermetallic compounds formed of other elements themselves.
REFERENCES:
patent: 5053085 (1991-10-01), Masumoto et al.
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patent: 5431751 (1995-07-01), Okochi et al.
patent: 5432011 (1995-07-01), DuBois et al.
Shechtman et al., "Metallic Phase With Long-Range Orientational Order and No Translational Symmetry", Nov. 12, 1984, Physical Review Letters, vol. 53, No. 20, pp. 1951-1953.
S. Takeuchi, "Quasi-Crystal," published on Jun. 12, 1992, pp. 78-79 & English Translation Thereof.
Inoue Akihisa
Kita Kazuhiko
Masumoto Tsuyoshi
Nagahora Junichi
Shibata Toshisuke
Inoue Akihisa
Koehler Robert R.
Masumoto Tsuyoshi
Simmons David A.
YKK Corporation
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