Yoshida Kogyo K.k.

Other

Tsuyoshi Masumoto

Piston Ring Company, Ltd.

Katsumasa Odera

Akihisa Inoue

Masahiro Oguchi

Akihisa Inoe

Tsuyoshi Matsumoto

The present invention provides high strength, heat resistant aluminum-based alloys having a composition represented by the general formula: Al.sub.a M.sub.b X.sub.c wherein:

High strength, heat resistant aluminum-based alloys

The present invention provides high strength, heat resistant aluminum-based alloys having a composition represented by the general formula:

The present invention provides high-strength, heat resistant aluminum alloys having a composition represented by the general formula:

High strength, heat resistant aluminum alloys and method of preparing

The present invention provides high strength, heat resistant aluminum-based alloys having a composition represented by the general formula, Al.sub.a M.sub.b X.sub.c wherein:

High strength, heat-resistant aluminum-based alloys

The present invention provides high strength magnesium-based alloys which are at least 50% by volume composed of an amorphous phase, the alloys having a composition represented by the general formula (I) Mg.sub.a X.sub.b ; (II) Mg.sub.a X.sub.c M.sub.d, (III) Mg.sub.a X.sub.c Ln.sub.e ; or (IV) Mg.sub.a X.sub.c M.sub.d Ln.sub.e (wherein X is elements selected from the group consisting of Cu, Ni, Sn and Zn; M is one or more elements selected from the group consisting of Al, Si and Ca; Ln is one or more elements selected from the group consisting of Y, La, Ce, Nd and Sm or a misch metal rare earth elements; and a, b, c, d and e are atomic percentages falling within the following ranges: 40.ltoreq.a.ltoreq.90; 10.ltoreq.b.ltoreq.60, 4.ltoreq.c.ltoreq.35, 2.ltoreq.d.ltoreq.25, and 4.ltoreq.e.ltoreq.25. Since the magnesium-based alloys have high hardness, high strength and high corrosion-resistance, they are very useful in various applications. Further, since their alloys exhibit superplasticity near the crystallization temperature, they can be processed into various bulk materials, for example, by extrusion, press working or hot-forging at the temperatures of the crystallization temperature .+-.100.degree. C.

High strength magnesium-based amorphous alloy

The present invention provides high strength, heat resistant aluminum-based alloys having a composition represented by the general formula Al.sub.a M.sub.b Ce.sub.c, wherein M is at least one metal element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu and Nb; and a, b and c are atomic percentages falling within the following ranges:

The present invention provides high corrosion-resistant aluminum-based alloys having a composition represented by the general formula Al.sub.x M.sub.y (wherein: M is one metal element selected from the group consisting of Y, La, Ce, Nd and Sm; and x and y range from 75 to 98 atomic percent and from 2 to 25 atomic percent, respectively), the aluminum-based alloy containing at least 50% by volume of amorphous phase. The aluminum-based alloys are especially useful as high corrosion-resistant, high strength, high heat-resistant materials in various applications and, since they exhibit superplasticity in the vicinity of their crystallization temperature, they can be processed into various bulk materials, for example, by extrusion, press working or hot-forging at the temperatures within the range of the crystallization temperature .+-.100.degree. C.

Corrosion-resistant aluminum-based alloys

The present invention provides high-strength and heat resistant aluminum alloys having a composition represented by the general formula Al.sub.a M.sub.b La.sub.c (wherein M is at least one metal element selected from the group consisting of Fe, Co, Ni, Cu, Mn and Mo; and a, b and c are atomic percentages falling within the following ranges:

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Kurobe, Japan

Katsumasa Odera