Glass forming ability and crystallization behaviors of the Ti-Cu-Ni-(Sn) alloys with large supercooled liquid region

Y. C. Kim, S. Yi, W. T. Kim, D. H. Kim

Research output: Contribution to journalConference article

27 Citations (Scopus)

Abstract

The thermal stability and crystallization behavior of melt spun amorphous Ti-Cu-Ni-(Sn) alloys are investigated by thermal analysis and structural characterization with the intention to find alloy composition with wide supercooled liquid regime ΔTx. ΔTx of amorphous Ti50Cu50-xNix alloys increased with increasing Ni content up to 15 at% and then decreased with further increasing. Maximum ΔTx of 46 K was obtained in Ti50Cu35Ni15 alloy. Partial replacement of Cu by Sn improved thermal stability of amorphous phase and ΔTx. Maximum ΔTx of 73 K was obtained from melt spun amorphous Ti50Cu32Ni15Sn3 alloy. Amorphous Ti50Cu35Ni15 alloy crystallized by precipitation of supersaturated cubic Ti(Ni,Cu) phase followed by decomposition into a mixture of TiCu and TiNi at higher temperature. Amorphous Ti50Cu32Ni15Sn3 phase crystallized by co-precipitation of Ti(Ni,Cu) phase and Ti2Ni phases, followed by transformation into a mixture of TiNi, TiCu, Ti3Sn phases.

Original languageEnglish
Pages (from-to)67-72
Number of pages6
JournalMaterials Science Forum
Volume360-362
DOIs
Publication statusPublished - 2001
EventMetastable, Mechanically Alloyed and Nanocrystalline Materials (ISMANAM 2000) - Oxford, United Kingdom
Duration: 2000 Jul 92000 Jul 14

All Science Journal Classification (ASJC) codes

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

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