摘要:
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.cwherein:M is at least one metal element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Ti, Mo, W, Ca, Li, Mg and Si;X is at least one metal element selected from the group consisting of Hf, Nb, and Ta; anda, b and c are atomic percentages falling within the following ranges:50.ltoreq.a.ltoreq.95, 0.5.ltoreq.b.ltoreq.35 and 0.5.ltoreq.c.ltoreq.25, the aluminum-based alloy being in an amorphous state, microcrystalline state or a composite state thereof. The aluminum-based alloys possess an advantageous combination of properties of high strength, heat resistance, superior ductility and good processability which make then suitable for various applications.
摘要:
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.
摘要:
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.
摘要:
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:50.ltoreq.a.ltoreq.93, 0.5.ltoreq.b.ltoreq.35 and 0.5.ltoreq.c.ltoreq.25,the aluminum alloy containing at least 50% by volume of amorphous phase. The aluminum-based alloys are especially useful as high strength, high heat resistant materials in various applications and since they exhibit superplasticity in the vicinity of their crystallization temperature, they can be easily processed into various bulk materials by extrusion, press woring or hot-forging at the temperatures within the range of the crystallization temperature .+-.100.degree. C.
摘要:
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:65.ltoreq.a.ltoreq.93, 4.ltoreq.b.ltoreq.25 and 3.ltoreq.c.ltoreq.15),the aluminum alloys containing at least 50% by volume of amorphous phase. The aluminum alloys are especially useful as high strength and high heat resistant materials in various applications and, since the aluminum alloys specified above exhibit a superplasticity in the vicinity of their crystallization temperature, they can be readily worked into bulk forms by extrusion, press working or hot forging in the vicinity of the crystallization temperature.
摘要:
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.cwherein:M is at least one metal element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Ti, Mo, W, Ca, Li, Mg and Si;X is at least one metal element selected from the group consisting of Y, La, Ce, Sm, Nd, Hf, Nb, Ta and Mm (misch metal); anda, b and c are atomic percentages falling within the following ranges:50.ltoreq.a.ltoreq.95, 0.5.ltoreq.b.ltoreq.35 and 0.5.ltoreq.c.ltoreq.25,the aluminum-based alloy being in an amorphous state, microcrystalline state or a composite state thereof. The aluminum-based alloys possess an advantageous combination of properties of high strength, heat resistance, superior ductility and good processability which make then suitable for various applications.
摘要:
The present invention provides high-strength, heat resistant aluminum alloys having a composition represented by the general formula:Al.sub.a M.sub.b X.sub.d or Al.sub.a M.sub.b Q.sub.c X.sub.e(wherein M is at least one metal element selected from the group consisting of Cu, Ni, Co and Fe; Q is at least one metal element selected from the group consisting Mn, Cr, Mo, W, V, Ti and Zr; X is at least one metal element selected from the group consisting of Nb, Ta, Hf and Y; and a, b, c, d and e are atomic percentages falling within the following ranges: 45.ltoreq.a.ltoreq.90, 5.ltoreq.b.ltoreq.40, 0
摘要:
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:M is at least one metal element selected from the group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Ti, Mo, W, Ca, Li, Mg and Si;X is at least one metal element selected from the group consisting of Y, La, Ce, Sm, Nd, Hf, Nb, Ta and Mm (misch metal); anda, b and c are atomic percentages falling within the following ranges:50.ltoreq.a.ltoreq.95, 0.5.ltoreq.b.ltoreq.35 and 0.5.ltoreq.c.ltoreq.25,the aluminum-based alloy being in an amorphous state, microcrystalline state or a composite state thereof. The aluminum-based alloys possess an advantageous combination of properties of high strength, heat resistance, superior ductility and good processability which make then suitable for various applications.
摘要:
An aluminum-based alloy having the general formula Al.sub.x L.sub.y M.sub.z (wherein L is Mn or Cr; M is Ni, Co, and/or Cu; and x, y, and z, representing a composition ratio in atomic percentages, satisfy the relationships x+y+z=100, 75.ltoreq.x.ltoreq.95, 2.ltoreq.y.ltoreq.15, and 0.5.ltoreq.z.ltoreq.10) having a metallographic structure comprising a quasi-crystalline phase possesses high strength and high rigidity. In order to enhance the ductility and toughness of the aluminum-based alloy, the atomic percentage of M may be further limited to 0.5.ltoreq.z.ltoreq.4, and more preferably to 0.5.ltoreq.z.ltoreq.3. The aluminum-based alloy is useful as a structural material for aircraft, vehicles and ships, and for engine parts; as material for sashes, roofing materials, and exterior materials for use in construction; or as materials for use in marine equipment, nuclear reactors, and the like.
摘要:
Hard magnetic materials of the present invention contain at least one element of Fe, Co and Ni as a main component, at least one element M of Zr, Nb, Ta and Hf, at least one rare earth element R and B. The texture of the materials has at least 70% of fine crystalline phase having an average grain size of 100 nm or less, and the residue having an amorphous phase, the fine crystalline phase mainly composed of bcc-Fe or bcc-Fe compound, Fe--B compound and/or R.sub.2 Fe.sub.14 B.sub.1.