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AssigneesTsuyoshi Masumoto, Akihisa Inoue, Yoshida Kogyo K.K.
InventorsTsuyoshi Masumoto, Akihisa Inoue, Junichi Nagahora, Kazuhiko Kita
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A process for producing an amorphous alloy material characterized by imparting ductility to an amorphous alloy having a supercooled liquid region by giving a prescribed amount of strain at a prescribed strain rate to the alloy in the glass transition temperature region of the alloy. The amorphous alloy may be in the form of spherical or irregular-shaped powders or thin ribbons or in the form of primary consolidated shapes thereof or an amorphous alloy casting. The amount of strain and strain rate are preferably 50% or greater and 2.times.10.sup.-2 /sec or higher, respectively, and the worked amorphous alloy material is preferably allowed to cool in a furnace or spontaneously. Suitable examples of the amorphous alloy to be employed include Al-TM-Ln, Mg-TM-Ln, Zr-TM-Al and Hf-TM-Al alloys, wherein TM is a transition metal element and Ln is a rare earth metal element. The thus obtained amorphous alloy is greatly improved in the prevention of embrittlement in hot working peculiar to the alloy.
A process for producing an amorphous alloy material which comprises imparting ductility to an amorphous alloy having a supercooled liquid region by giving an amount of strain of 30% or greater at a strain rate of 1.times.10.sup.-3 /sec or higher to said alloy in the glass transition temperature region of said alloy.
A process for producing an amorphous alloy material which comprises producing a ductile consolidated shape formed by giving an amount of strain of 30% or greater at a strain rate of 1.times.10.sup.-3 /sec or higher to an amorphous alloy having a supercooling liquid region, in the form of spherical or irregular shaped powder or thin ribbon, while conducting pressing in the glass transition temperature region of said alloy.
A process for producing an amorphous alloy material which comprises producing an amorphous intermediate raw material or final product each having a required shape and ductility by giving an amount of strain of 30% or greater at a strain rate of 1.times.10.sup.-3 /sec or higher to an amorphous alloy having a supercooled liquid region in the form of casting or primary consolidated material of powder or thin ribbon, while conducting pressing in the glass transition temperature region of said alloy.
Dependencies are inferred from the claim text.