Solidification of bulk metallic glass-forming alloys observed by time-resolved X-ray diffraction combined with levitation technique

Toshihiko Akimoto, Akitoshi Mizuno, Masahito Watanabe, Yoshihiko Yokoyama, Shinji Kohara, Masayoshi Ito, Masaki Takata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is well known that multi-component alloys form bulk metallic glasses (BMGs) from the supercooled liquid state without rapid quenching. However, the mechanism of phase selection between crystal and glass states has not been fully clarified. To obtain an insight into the glass-forming processes, we carried out in-situ observation on the solidification of Zr-based BMG-forming alloys from its supercooled liquids by time-resolved X-ray diffraction combined with the conical nozzle levitation (CNL) technique to achieve a containerless melting. For Zr50Cu40Al10 alloys, we succeeded in detecting the X-ray diffraction patterns during glass formation from the supercooled liquid state as well as the crystallization from the liquid state. Furthermore we performed the precise structure analysis of supercooled state of Zr-based binary liquids. Based on the liquid structure and in-situ observation results, we discussed the phase selection mechanism between crystal and glass states.

Original languageEnglish
Title of host publicationLocal Structure and Dynamics in Amorphous Systems
PublisherMaterials Research Society
Pages62-66
Number of pages5
ISBN (Print)9781615677771
DOIs
Publication statusPublished - 2008 Jan 1
Externally publishedYes
Event2008 MRS Fall Meeting - Boston, MA, United States
Duration: 2008 Dec 22008 Dec 5

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1152
ISSN (Print)0272-9172

Other

Other2008 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period08/12/208/12/5

ASJC Scopus subject areas

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

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