Ni-based bulk amorphous alloys in the Ni-Ti-Zr-(Si,Sn) system

S. Yi, T. G. Park, D. H. Kim

Research output: Contribution to journalArticlepeer-review

105 Citations (Scopus)

Abstract

New Ni-based bulk amorphous alloys in the alloy system Ni-Ti-Zr-(Si,Sn) were developed through systematic alloy design based upon the empirical rules for high glass forming alloys. Small additions of Si and/or Sn significantly improved the glass forming ability (GFA) of the alloys Ni57Ti23-xZr20(Si,Sn)x leading to a Ni-based bulk amorphous alloy. The amorphous ribbons of the alloys Ni57Ti23-xZr20(Si,Sn)x exhibited very high glass transition temperatures (Tg > 823 K), crystallization temperatures (Tx > 883 K), and large undercooled liquid regions (ΔTx > 50 K) implying the high GFA of the alloys. Fully amorphous rods with the diameter of up to 2 mm can be fabricated by a copper mold casting method. Development of the new Ni-based bulk amorphous alloys having high Tg, Tx, and ΔTx expands the practical applications of amorphous alloys as structural materials.

Original languageEnglish
Pages (from-to)2425-2430
Number of pages6
JournalJournal of Materials Research
Volume15
Issue number11
DOIs
Publication statusPublished - 2000 Nov

Bibliographical note

Funding Information:
This work was supported by Creative Research Initiatives of the Korean Ministry of Science and Technology.

All Science Journal Classification (ASJC) codes

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

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