Microstructural study of Ce-Nd alloys

Orly Hachimi, S. Hayun, A. Venkert, M. P. Dariel

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The present work is concerned with the grain structure and grain growth in some cerium-neodymium alloys. The grain size in a Ce-10 wt.% Nd alloy is determined by the rate of cooling through the two-phase γ + δ region. Grain growth in the upper γ-phase is a diffusion-controlled process with activation energy close to that associated with self-diffusion of cerium. In the course of spontaneous oxidation, epitaxial CeO2 layers grow on the Ce-alloy surface. The presence of such layers has been previously observed on a variety of substrate materials but not on the parent metal cerium. As these layers become thicker, coherency strains give rise to a network of cracks that develop within the oxide layer. The coherence between the cerium-substrate and the oxide layer is maintained even across the initially formed intermediate sub-oxide layers.

Original languageEnglish
Pages (from-to)104-109
Number of pages6
JournalJournal of Alloys and Compounds
Issue number1-2
StatePublished - 16 Jan 2007


  • Grain boundaries
  • Microstructure
  • Oxidation
  • Rare-earth alloys

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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