Mg–Ni–La Amorphous Alloys with a Wide Supercooled Liquid Region

Akihisa Inoue, Masayoshi Kohinata, Anpang Tsai, Tsuyoshi Masumoto

Research output: Contribution to journalArticlepeer-review

188 Citations (Scopus)

Abstract

New Mg–Ni–La amorphous alloys exhibiting the glass transition phenomenon were found to form in a wide compositional range of 10 to 40 at% Ni and 5 to 30 at%La by the melt-spinning technique. The glass transition temperature (Tg) increases from 427 to 453 K with increasing La content while no distinct change of Tg with Ni content is seen. The temeprature span ΔTx(=Tx−Tg) between Tg and onset temperature of crystallization (Tx) increases first with increasing Ni and La content, shows the largest value of 58 K for Mg50Ni30La20, and then decreases. This ΔTx value is larger than that for Pd-based amorphous alloys, being comparable to that for a Pt60Ni15P25 amorphous alloy which exhibits the widest Tx among amorphous metallic materials. Specific heats of the amorphous solid and supercooled liquid were also determined for the Mg50Ni30La20 amorphous alloy.

Original languageEnglish
Pages (from-to)378-381
Number of pages4
JournalMaterials Transactions, JIM
Volume30
Issue number5
DOIs
Publication statusPublished - 1989

Keywords

  • amorphous alloy
  • crystallization temperature
  • glass transition
  • magnesium–nickel–lanthanum system
  • melt spinning
  • specific heat
  • supercooled liquid

ASJC Scopus subject areas

  • Engineering(all)

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