Patent ID: 7056394
Filing Date: 2006-06-06
Classification: C22C

Abstract:
1. A Cu—Be based amorphous alloy product consisting of an alloy comprising an amorphous phase of 90% or more by volume fraction, said alloy consisting of a composition represented by the following formula: Cu wherein said amorphous alloy having a supercooled liquid temperature range ΔTx of 25 K or more, said supercooled liquid temperature range ΔTx being represented by the formula: ΔTx=Tx−Tg, wherein Tx represents a crystallization initiation temperature of said alloy, and Tg represents a glass transition temperature of said alloy, wherein said amorphous alloy having a reduced glass transition temperature of 0.58 or higher, said reduced glass transition temperature being represented by the following formula: Tg/Tm, wherein Tg represents a glass transition temperature of said alloy, and Tm represents a melting temperature of said alloy, and wherein said amorphous alloy product having a shape with a diameter or thickness of 1 mm or more, made through a copper-mold casting method, and exhibits a compressive fracture strength σ