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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/23555

Title: Mg-Y-Cu Bulk Metallic Glass Prepared by Mechanical Alloying and Vacuum Hot-Pressing
Authors: P.Y. Lee;M.C. Kao;C.K. Lin;J.C. Huang
Contributors: NTOU:Institute of Materials Engineering
Keywords: C. Mechanicalalloying and milling;B. Glasses, metallic;B. Thermal stability;C. Powder metallurgy;including consolidation
Date: 2006-08
Issue Date: 2011-10-20T08:06:36Z
Publisher: Intermetallics
Abstract: Abstract:We have studied the amorphization behavior of Mg85−xY15Cux (x=20–40) alloy powders synthesized by mechanicalalloying technique. The as-milled powders were mainly amorphous after 10 h of milling. The thermal stability of these Mg85−xY15Cux glassy powders was investigated by differential scanning calorimeter (DSC). The ranges of Tg, Tx and ΔTx are around 430–459, 467–497, and 30–46 K, respectively. The Mg49Y15Cu36 glassy powders exhibit the largest supercooled region of 46 K. The amorphization behavior of Mg61Y15Cu24 was examined in details. Amorphous phases gradually became dominant after 7.5 h of milling and fully amorphous powders formed at the end of milling. The thermal stability of Mg61Y15Cu24 glassy powders was similar to that of melt-spun Mg60Y15Cu25 amorphous alloys. Mg61Y15Cu24bulkmetallicglass with homogeneously embedded nanocrystalline precipitates was successfully prepared by vacuumhotpressing. It was found that the applied pressure during consolidation could enhance the thermal stability and prolong the existence of amorphous phase inside Mg61Y15Cu24 powders.
Relation: 14(8-9), pp.994-999
URI: http://ntour.ntou.edu.tw/handle/987654321/23555
Appears in Collections:[材料工程研究所] 期刊論文

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