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Title: Mg-Y-Cu Bulk Nanocrystalline Matrix Composites Containing WC Particles
Authors: Pee Yew Lee;C. Lo;Jason S.C. Jang;J.C. Huang
Contributors: NTOU:Institute of Materials Engineering
Keywords: Bulk Metallic Glass;Mechanical Alloying (MA);Supercooled Liquid Region;Vacuum Hot Pressing
Date: 2006-07
Issue Date: 2011-10-20T08:06:37Z
Publisher: Key Engineering Materials
Abstract: Abstract:The preparation of Mg49Y15Cu36 metallic glass composite powders was accomplished by mechanical alloying of pure Mg, Y, Cu, and WC powder mixture after 10 h milling. In the ball-milled composites, initial WC particles were homogeneously dispersed in the Mg-based alloy glassy matrix. The metallic glass composites powders were found to exhibit a large supercooled liquid region before crystallization. Bulk metallic glass composites were formed by vacuum hot pressing the as-milled WC/ Mg49Y15Cu36 metallic glass composite powders at 473 K in the pressure range of 0.72-1.20 GPa. BMG composite with submicron WC particles homogeneously embedded in a highly dense nanocrystalline/amorphous matrix was successfully prepared under pressure of 1.20 GPa. It was found that the applied pressure during consolidation could enhance the thermal stability and promotes nanocrystallization of WC/ Mg49Y15Cu36 BMG composites.
Relation: 313, pp.25-30
Appears in Collections:[Institute of Materials Engineering] Periodical Articles

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