Preparation and characterization of dual-phase bulk metallic glasses through powder metallurgy route

Pee Yew Lee, Sung Ting Chung, Chung Kwei Lin, Wen Ta Tsai, Hong Ming Lin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In the present study, amorphous Mg49Y15Cu 36, and Ti50Cu28Ni15Sn7 alloy powders were synthesized separately by using a mechanical alloying technique. The dual-phase (Mg49Y15Cu36) 100-x(Ti50Cu28Ni15Sn7)x (x = 0, 10, 20, 30, 40, and 50 vol%) powders were prepared by mixing the corresponding amorphous powders. The amorphous dual-phase powders were then consolidated into bulk metallic glass (BMG) discs. The amorphization status of as-prepared powders and BMG discs was confirmed by X-ray diffraction and by using a differential scanning calorimeter. The microstructure of the BMG discs showed that the Ti50Cu28Ni15Sn7 phase is distributed homogeneously within the Mg49Y 15Cu36 matrix. The (Mg49Y15Cu 36)50 BMG disc exhibited a relative density of 97.2% and its Vickers microhardness was 526 ± 20kg/mm2.

Original languageEnglish
Pages (from-to)1595-1599
Number of pages5
JournalMaterials Transactions
Volume48
Issue number7
DOIs
Publication statusPublished - Jul 2007
Externally publishedYes

Keywords

  • Bulk metallic glasses
  • Composite
  • Mechanical alloying
  • Vacuum hot pressing

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

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