Orientation relationship between Nb and Nb5Si3 (D8l) phases in the eutectoid lamellar microstructure

N. Sekido, F. G. Wei, Y. Kimura, S. Miura, Y. Mishima

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The crystallography of a Nb/Nb 5 Si 3 lamellar microstructure formed by Nb 3 Si decomposition has been investigated by transmission election microscopy. Upon solidification of a Nb-10?at.% Ti-20?at.% Si alloy, the high-temperature phase Nb 3 Si is retained at room temperature. During annealing at 1673?K, the Nb 3 Si phase transforms into the Nb and Nb 5 Si 3 (D8 l ) phases with a lamellar microstructure through a eutectoid reaction. The orientation relationship between Nb and Nb 5 Si 3 is determined by selected-area diffraction analyses as , and [133] Nb //[111] Nb5Si3 . The present orientation relationship is explained by good atomic matching on the close-packed planes along the near close-packed directions.

Original languageEnglish
Pages (from-to)89-98
Number of pages10
JournalPhilosophical Magazine Letters
Volume86
Issue number2
DOIs
Publication statusPublished - 2006 Feb 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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