Fabrication of Mg-Y-Cu bulk metallic glass by mechanical alloying and hot consolidation

P. Y. Lee; W. C. Liu; C. K. Lin; J. C. Huang

doi:10.1016/j.msea.2006.02.237

Fabrication of Mg-Y-Cu bulk metallic glass by mechanical alloying and hot consolidation

P. Y. Lee, W. C. Liu, C. K. Lin, J. C. Huang

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

18 Citations (Scopus)

Abstract

Mg₄₅Y₁₅Cu₄₀ (numbers indicate at.%) metallic glass powders were prepared by the mechanical alloying of pure Mg, Y, and Cu after 10 h of milling. The thermal stability of these Mg₄₅Y₁₅Cu₄₀ amorphous powders was investigated using the differential scanning calorimeter (DSC). T_g, T_x, and ΔT_x are 456, 491, and 35 K, respectively. The as-milled Mg₄₅Y₁₅Cu₄₀ powders were then consolidated by vacuum hot pressing into disk compacts with a diameter and thickness of 10 and 1 mm, respectively. This yielded bulk Mg₄₅Y₁₅Cu₄₀ metallic glass with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix. The pressure applied during consolidation can enhance thermal stability and prolong the existence of amorphous phase within Mg₄₅Y₁₅Cu₄₀ powders.

Original language	English
Pages (from-to)	1095-1098
Number of pages	4
Journal	Materials Science and Engineering A
Volume	448-451
DOIs	https://doi.org/10.1016/j.msea.2006.02.237
Publication status	Published - Mar 25 2007
Externally published	Yes

Keywords

Bulk metallic glass
Mechanical alloying
Mg-based alloys
Supercooled liquid region
Vacuum hot pressing

ASJC Scopus subject areas

Materials Science(all)

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10.1016/j.msea.2006.02.237

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title = "Fabrication of Mg-Y-Cu bulk metallic glass by mechanical alloying and hot consolidation",

abstract = "Mg45Y15Cu40 (numbers indicate at.%) metallic glass powders were prepared by the mechanical alloying of pure Mg, Y, and Cu after 10 h of milling. The thermal stability of these Mg45Y15Cu40 amorphous powders was investigated using the differential scanning calorimeter (DSC). Tg, Tx, and ΔTx are 456, 491, and 35 K, respectively. The as-milled Mg45Y15Cu40 powders were then consolidated by vacuum hot pressing into disk compacts with a diameter and thickness of 10 and 1 mm, respectively. This yielded bulk Mg45Y15Cu40 metallic glass with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix. The pressure applied during consolidation can enhance thermal stability and prolong the existence of amorphous phase within Mg45Y15Cu40 powders.",

keywords = "Bulk metallic glass, Mechanical alloying, Mg-based alloys, Supercooled liquid region, Vacuum hot pressing",

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

year = "2007",

month = mar,

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doi = "10.1016/j.msea.2006.02.237",

language = "English",

volume = "448-451",

pages = "1095--1098",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

issn = "0921-5093",

publisher = "Elsevier BV",

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T1 - Fabrication of Mg-Y-Cu bulk metallic glass by mechanical alloying and hot consolidation

AU - Lee, P. Y.

AU - Liu, W. C.

AU - Lin, C. K.

AU - Huang, J. C.

PY - 2007/3/25

Y1 - 2007/3/25

N2 - Mg45Y15Cu40 (numbers indicate at.%) metallic glass powders were prepared by the mechanical alloying of pure Mg, Y, and Cu after 10 h of milling. The thermal stability of these Mg45Y15Cu40 amorphous powders was investigated using the differential scanning calorimeter (DSC). Tg, Tx, and ΔTx are 456, 491, and 35 K, respectively. The as-milled Mg45Y15Cu40 powders were then consolidated by vacuum hot pressing into disk compacts with a diameter and thickness of 10 and 1 mm, respectively. This yielded bulk Mg45Y15Cu40 metallic glass with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix. The pressure applied during consolidation can enhance thermal stability and prolong the existence of amorphous phase within Mg45Y15Cu40 powders.

AB - Mg45Y15Cu40 (numbers indicate at.%) metallic glass powders were prepared by the mechanical alloying of pure Mg, Y, and Cu after 10 h of milling. The thermal stability of these Mg45Y15Cu40 amorphous powders was investigated using the differential scanning calorimeter (DSC). Tg, Tx, and ΔTx are 456, 491, and 35 K, respectively. The as-milled Mg45Y15Cu40 powders were then consolidated by vacuum hot pressing into disk compacts with a diameter and thickness of 10 and 1 mm, respectively. This yielded bulk Mg45Y15Cu40 metallic glass with nanocrystalline precipitates homogeneously embedded in a highly dense glassy matrix. The pressure applied during consolidation can enhance thermal stability and prolong the existence of amorphous phase within Mg45Y15Cu40 powders.

KW - Bulk metallic glass

KW - Mechanical alloying

KW - Mg-based alloys

KW - Supercooled liquid region

KW - Vacuum hot pressing

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JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

Fabrication of Mg-Y-Cu bulk metallic glass by mechanical alloying and hot consolidation

Abstract

Keywords

ASJC Scopus subject areas

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