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 journalArticle

12 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). 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.

Original languageEnglish
Pages (from-to)1095-1098
Number of pages4
JournalMaterials Science and Engineering A
Volume448-451
DOIs
Publication statusPublished - Mar 25 2007
Externally publishedYes

Fingerprint

consolidation
Mechanical alloying
Metallic glass
metallic glasses
Consolidation
Powders
alloying
Fabrication
fabrication
Thermodynamic stability
thermal stability
hot pressing
Hot pressing
Calorimeters
calorimeters
Precipitates
precipitates
Vacuum
Scanning
vacuum

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Fabrication of Mg-Y-Cu bulk metallic glass by mechanical alloying and hot consolidation. / Lee, P. Y.; Liu, W. C.; Lin, C. K.; Huang, J. C.

In: Materials Science and Engineering A, Vol. 448-451, 25.03.2007, p. 1095-1098.

Research output: Contribution to journalArticle

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