Mg-Y-Cu bulk metallic glass prepared by mechanical alloying and vacuum hot-pressing

P. Y. Lee; M. C. Kao; C. K. Lin; J. C. Huang

doi:10.1016/j.intermet.2006.01.023

Mg-Y-Cu bulk metallic glass prepared by mechanical alloying and vacuum hot-pressing

P. Y. Lee, M. C. Kao, C. K. Lin, J. C. Huang

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

We have studied the amorphization behavior of Mg_85-xY₁₅Cu_x (x=20-40) alloy powders synthesized by mechanical alloying technique. The as-milled powders were mainly amorphous after 10 h of milling. The thermal stability of these Mg_85-xY₁₅Cu_x glassy powders was investigated by differential scanning calorimeter (DSC). The ranges of Tg, T_x and ΔT_x 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. Mg₆₁Y₁₅Cu₂₄ bulk metallic glass with homogeneously embedded nanocrystalline precipitates was successfully prepared by vacuum hot pressing. It was found that the applied pressure during consolidation could enhance the thermal stability and prolong the existence of amorphous phase inside Mg₆₁Y₁₅Cu₂₄ powders.

Original language	English
Pages (from-to)	994-999
Number of pages	6
Journal	Intermetallics
Volume	14
Issue number	8-9
DOIs	https://doi.org/10.1016/j.intermet.2006.01.023
Publication status	Published - Aug 2006
Externally published	Yes

Keywords

B. Glasses, metallic
B. Thermal stability
C. Mechanical alloying and milling
C. Powder metallurgy, including consolidation

ASJC Scopus subject areas

Metals and Alloys

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10.1016/j.intermet.2006.01.023

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title = "Mg-Y-Cu bulk metallic glass prepared by mechanical alloying and vacuum hot-pressing",

abstract = "We have studied the amorphization behavior of Mg85-xY15Cux (x=20-40) alloy powders synthesized by mechanical alloying 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. Mg61Y15Cu24 bulk metallic glass with homogeneously embedded nanocrystalline precipitates was successfully prepared by vacuum hot pressing. It was found that the applied pressure during consolidation could enhance the thermal stability and prolong the existence of amorphous phase inside Mg61Y15Cu24 powders.",

keywords = "B. Glasses, metallic, B. Thermal stability, C. Mechanical alloying and milling, C. Powder metallurgy, including consolidation",

author = "Lee, {P. Y.} and Kao, {M. C.} and Lin, {C. K.} and Huang, {J. C.}",

year = "2006",

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doi = "10.1016/j.intermet.2006.01.023",

language = "English",

volume = "14",

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T1 - Mg-Y-Cu bulk metallic glass prepared by mechanical alloying and vacuum hot-pressing

AU - Lee, P. Y.

AU - Kao, M. C.

AU - Lin, C. K.

AU - Huang, J. C.

PY - 2006/8

Y1 - 2006/8

N2 - We have studied the amorphization behavior of Mg85-xY15Cux (x=20-40) alloy powders synthesized by mechanical alloying 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. Mg61Y15Cu24 bulk metallic glass with homogeneously embedded nanocrystalline precipitates was successfully prepared by vacuum hot pressing. It was found that the applied pressure during consolidation could enhance the thermal stability and prolong the existence of amorphous phase inside Mg61Y15Cu24 powders.

AB - We have studied the amorphization behavior of Mg85-xY15Cux (x=20-40) alloy powders synthesized by mechanical alloying 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. Mg61Y15Cu24 bulk metallic glass with homogeneously embedded nanocrystalline precipitates was successfully prepared by vacuum hot pressing. It was found that the applied pressure during consolidation could enhance the thermal stability and prolong the existence of amorphous phase inside Mg61Y15Cu24 powders.

KW - B. Glasses, metallic

KW - B. Thermal stability

KW - C. Mechanical alloying and milling

KW - C. Powder metallurgy, including consolidation

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Mg-Y-Cu bulk metallic glass prepared by mechanical alloying and vacuum hot-pressing

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