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Strong composition-dependence on glass-forming ability in Ni-(Ti,Zr)-Si pseudo-ternary alloys

  • H. Yang
  • , J. Q. Wang*
  • , Y. Li
  • *Corresponding author for this work
  • CAS - Institute of Metal Research
  • National University of Singapore

Research output: Contribution to journalArticlepeer-review

Abstract

The glass formation in Ni-(Ti,Zr)-Si pseudo-ternary alloys was studied. For suction casting, by carefully adjusting the alloy composition and studying the microstructure changes, the best glass-forming alloy with a 2 mm diameter is pinpointed in a narrow composition region of 57.5-58.5 at.% Ni, 36.5-38.5 at.% (Ti + Zr) and 5-5.5 at.% Si. The main competing crystalline phases, identified by XRD and SEM, were Ni10(Zr,Ti)7, Ni(Ti,Zr) and an unidentified Si-containing phase. Our results indicate a clear need for monitoring the microstructure change in the cross section of the ingots to locate the best glass-forming alloys.

Original languageEnglish
Pages (from-to)86-91
Number of pages6
JournalJournal of Alloys and Compounds
Volume422
Issue number1-2
DOIs
StatePublished - 28 Sep 2006
Externally publishedYes

Keywords

  • Casting
  • Metallic glasses
  • Ni-based alloy
  • Thermal analysis

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