Glass forming ability and thermal properties of a Cu-based bulk metallic glass microalloyed with silicon

J. S.C. Jang, Y. C. Huang, C. H. Lee, I. S. Lee, L. J. Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The (Cu42Zr42Al8Ag8) 100-xSix amorphous alloy rods, x =U to 1, with i mm in diameter were prepared by Cu-mold drop casting method. The glass forming ability, thermal properties and microstructure evolution was studied by differential scanning calorimetry (DSC), and X-ray diffractometry (XRD). The XRD result reveals that these as-quenched (Cu42Zr42Al 8Ag8)100-xSix alloy rods exhibit a broaden diffraction pattern of amorphous phase. The crystallization temperature and GFA (glass forming ability) of (Cu42Zr42Al 8Ag8)100-xSix alloys increase with the silicon additions. The highest Trg (0.59) and y value (0.405) occurred at the (Cu42Zr42Al8Ag 8)99.75Si0.25 and (Cu42Zr 42Al8Ag8)99.75Si0.25 alloy. In addition, both of the activation energy of crystallization and the incubation time of isothermal annealing for these (Cu42Zr 42Al8Ag8)100-xSix alloys indicates that the (Cu42Zr42Al8Ag 8)99.25Si0.75 alloy posses the best thermal stability among the (Cu42Zr42Al8Ag 8)100-xSix alloy system.

Original languageEnglish
Title of host publicationSelected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
PublisherTrans Tech Publications Ltd
Pages1341-1344
Number of pages4
EditionPART 2
ISBN (Print)0878494626, 9780878494620
DOIs
StatePublished - 2007
Event6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, Korea, Republic of
Duration: 5 Nov 20079 Nov 2007

Publication series

NameMaterials Science Forum
NumberPART 2
Volume561-565
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
Country/TerritoryKorea, Republic of
CityJeju
Period5/11/079/11/07

Keywords

  • Amorphous
  • BMG
  • Cu base
  • Glass forming ability

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