Crystallisation by laser for Zr based bulk metallic glass

R. Ikutomo, M. Tsujikawa, M. Hino, H. Kimura, Kunio Yubuta, A. Inoue

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Bulk metallic glasses (BMGs) show high amorphous phase stability. The solidification process of BMG occurs with the cessation of epitaxial crystal growth. For a laser heated and melted surface of BMG, crystallisation occurs during cooling, along with crystalline growth from the heat affected zone. Such crystallisation stops at a certain location where the residual melt solidifies as amorphous. The amorphous formation can occur after crystal nucleation. Thermal treatment using a diode laser was used for surface modification of 2 mm thick Zr 55 Al 10 Ni 5 Cu 30 (at.-%) BMG plates. When laser conditions (scanning speed, defocused irradiated spot size and output power) were changed, the maximum temperature and heating cooling rate were changed, and microstructures were changed. Cessation of crystallisation was observed.

本文言語English
ページ(範囲)148-151
ページ数4
ジャーナルInternational Journal of Cast Metals Research
21
1-4
DOI
出版ステータスPublished - 2008 8 1

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金

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