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Cu-based Bulk Amorphous Alloys in the Cu-Zr-Ti-Ni-Pd System  

Kim, Sung-Gyoo (Department of Production & Joining Engineering, Pukyong National University)
Bae, Cha-Hurn (Department of Material Engineering, Pukyong National University)
Publication Information
Journal of Korea Foundry Society / v.22, no.6, 2002 , pp. 304-308 More about this Journal
Abstract
The new Cu-Zr-Ti-Ni-Pd amorphous alloy system has been introduced and manufactured using melt-spinning and Cu-mold die casting methods. Amorphous formability, the supercooled liquid region before crystallization and mechanical properties of the alloys were examined. The reduced glass transition temperature(Trg = Tg/Tm) and the supercooled liquid region(${\Delta}$Tx = Tx-Tg) of $Cu_{49}Zr_{30}Ti_{10}Ni_5Pb_6$ alloy were 0.620 and 57 K respectively. $Cu_{49}Zr_{30}Ti_{10}Ni_5Pb_6$ amorphous alloy was produced in the rod shape with 2mm diameter using the Cu-mold die casting. The hardness value of the amorphous bulk alloy was 432 DPN.
Keywords
Cu-base Amorphous Bulk Alloy; Rapid Solidification; Glass Transition;
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