Microstructural evolution of rapidly solidified Co-Mo and Ni-Mo eutectic alloys

Xiujun Han, Wenjing Yao, Bingbo Wei

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Droplets of Co-37.6 wt pct Mo and Ni-47.7 wt pct Mo eutectic alloys were rapidly solidified during the containerless processing in a 3 m drop tube. A kind of anomalous eutectic appears in these two eutectic alloys when undercooling is beyond 56 K and 61 K, respectively. The two eutectic phases in the anomalous eutectic were observed to grow in the dendrite manner. The formation of the anomalous eutectic is ascribed to the cooperative dendrite growth of the two independently nucleated eutectic phases. Current dendrite and eutectic growth theories are applied to describe the observed processes.

Original languageEnglish
Pages (from-to)553-556
Number of pages4
JournalJournal of Materials Science and Technology
Volume19
Issue number6
StatePublished - Nov 2003

Keywords

  • Containerless processing
  • Dendrite growth
  • Eutectic growth
  • Rapid solidification

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