Solidification of tin on quasicrystalline surfaces

Alok Singh, H. Somekawa, Y. Matsushita, Ampo Sai

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A two-phase alloy of β-Sn and Al 63Cu 25Fe 12 quasicrystal produced by melt-spinning was annealed and aged to form various microstructures of tin in a quasicrystalline (QC) or microcrystalline (MC) matrix. The morphology and structure of the interfaces was studied by scanning and transmission electron microscopy and was related to melting and solidification behavior of tin studied by differential scanning calorimetry. In a MC matrix the tin phase occurred as nanoparticles and solidified with an undercooling of about 35°C. In a QC matrix, tin formed intergranular layers on faceted matrix grains. Tin showed multiple solidification peaks in undercooling ranging from 8°C to 43°C, indicating several distinct nucleation sites which compete with each other and are selected kinetically. The interfacial energy (depending on the structural state of the matrix) had a more dominating effect on the solidification of tin than the size, shape and the distribution of the tin particles. It was also concluded that solidification of tin is easier on quasicrystalline surfaces than on aluminum.

Original languageEnglish
Pages (from-to)1106-1128
Number of pages23
JournalPhilosophical Magazine
Volume92
Issue number9
DOIs
Publication statusPublished - 2012 Mar 21

Keywords

  • phase transformation
  • quasicrystal
  • solidification
  • tin
  • transmission electron microscopy

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Singh, A., Somekawa, H., Matsushita, Y., & Sai, A. (2012). Solidification of tin on quasicrystalline surfaces. Philosophical Magazine, 92(9), 1106-1128. https://doi.org/10.1080/14786435.2011.640646