Dynamic observation of MoSiBTiC alloy phase transitions using in situ ultrahigh-temperature X-ray diffraction measurement

Hiroyuki Fukuyama, Makoto Ohtsuka, Ryogo Sawada, Haruki Nakashima, Yasuo Ohishi, Naohisa Hirao, Masaki Takata, Kyosuke Yoshimi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In situ ultrahigh-temperature XRD measurement of a MoSiBTiC alloy was carried out using a laser-heated diamond anvil cell and synchrotron radiation. This technique revealed the complicated dynamic behavior of phase transitions in the MoSiBTiC alloy on heating above 1950 °C. The MoSiBTiC alloy initially consisted of Mo solid solution (Moss), Mo5B2Si (T2), TiC, Mo2B, Mo3Si, and Mo2C phases. The Mo2B, Mo3Si, and Mo2C phases disappeared on heating at ~1647 °C. The Moss grains coarsened during heating and the Moss, TiC, and T2 phases were present >1950 °C. The obtained results verified the solidification pathway of the MoSiBTiC alloy.

Original languageEnglish
Article number100867
JournalMaterialia
Volume13
DOIs
Publication statusPublished - 2020 Sep

Keywords

  • Diamond anvil cell (DAC)
  • In situ ultrahigh-temperature XRD measurement
  • MoSiBTiC alloy
  • Synchrotron radiation

ASJC Scopus subject areas

  • Materials Science(all)

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