Entangled Duplex Structure and Polycrystalline Globule Formation through Multistep Liquid-Phase Separation in Cu–Fe–Zr–B Alloys

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  • Nagase Takeshi
    Research Center for Ultra-High Voltage Electron Microscopy, Osaka University Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University

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  • Entangled Duplex Structure and Polycrystalline Globule Formation through Multistep Liquid-Phase Separation in Cu–Fe–Zr–B Alloys

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Abstract

A unique entangled duplex structure was formed in rapidly solidified Cu–Fe–Zr–B alloys with Cu/Fe ratio = 1/1 and 6/1. Polycrystalline globules, embedded in a Cu crystalline matrix, were also observed in Cu35Fe35Zr10B20 and Cu60Fe10Zr10B20 alloys; this rapidly solidified structure was drastically different from that of Cu–Fe–Zr–B alloys enriched in Fe. Multi-step liquid phase separation can lead to unique microstructure formation during rapid solidification.

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  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 55 (2), 304-310, 2014

    The Japan Institute of Metals and Materials

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