Design and microstructure analysis of globules in Al-Co-La-Pb immiscible alloys with an amorphous phase

Takeshi Nagase, Mamoru Takemura, Mitsuaki Matsumuro, Megumi Matsumoto, Yoshikazu Fujii

研究成果: Article査読

14 被引用数 (Scopus)

抄録

An immiscible alloy with an amorphous phase, Al-Co-La-Pb, was designed by the combination of empirical rules, prediction of phase diagrams based on ab initio calculations, and thermodynamic calculations. The solidification microstructure of rapidly solidified Al-Co-La-Pb melt-spun ribbons was investigated. Liquid-phase separation and the formation of an amorphous phase occurred simultaneously in the Al-Co-La-Pb alloy, resulting in the formation of Pb globules embedded in the Al-Co-La–based amorphous matrix. The particle size distribution of the globules and the formation of Pb nanoglobules were explained by the multistep liquid-phase separation. STEM observation clarified the microstructure of oxygen-enriched globules with double shell layers in the Al-Co-La-Pb alloy.

本文言語English
ページ(範囲)338-345
ページ数8
ジャーナルMaterials and Design
117
DOI
出版ステータスPublished - 2017 3 5
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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