Ni-based amorphous alloys in the Ni-Zr-Al-Y system that have high glass forming ability and large undercooled liquid regions

S. Yi, J. S. Jang, W. T. Kim, D. H. Kim

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Ni-based amorphous alloys containing no metalloids are developed in the alloy system Ni-Zr-Al-Y. A partial replacement of Zr by Y significantly enhances the glass-forming ability and enlarges the undercooled liquid region during continuous heating of amorphous ribbons. A quaternary alloy Ni55Zr17Al11Y17 exhibits large undercooled liquid region (54 K) implying high glass-forming ability of the alloy. The glass transition and crystallization temperatures of the quaternary alloy obtained in a differential scanning calorimetry are 717 and 771 K, respectively. A fully amorphous rod (Φ1 mm) and a rod (Φ2 mm) having a high volume fraction (∼80%) of the amorphous phase can be prepared by copper mold injection casting.

Original languageEnglish
Pages (from-to)258-262
Number of pages5
JournalMaterials Letters
Volume48
Issue number5
DOIs
Publication statusPublished - 2001 Apr

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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