Microstructure evolution of (Ti, Zr)C solid solution at the initial stage of phase decomposition

Ying Li, Hirokazu Katsui, Takashi Goto

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A solid solution of 90TiC-10ZrC (mol%) was prepared by spark plasma sintering and was partially decomposed into ZrC- and TiC-rich (Ti, Zr)C phases by heat treatment at 1573 K for 0.6-3.6 ks. The ZrC-rich phases were precipitated in the TiC-rich matrix with a coherent orientation relationship of ZrC-rich phase {100}//TiC-rich phase {100}. Phase decomposition started at the grain boundary and extended to the entire grain with increasing heat-treatment time. The Vickers hardness and fracture toughness increased as heat-treatment time increased to 3.6 ks.

Original languageEnglish
Pages (from-to)11449-11452
Number of pages4
JournalMaterials Today: Proceedings
Volume4
Issue number11
DOIs
Publication statusPublished - 2017

Keywords

  • (Ti Zr)C solid solution
  • Nanostructure
  • Phase decomposition

ASJC Scopus subject areas

  • Materials Science(all)

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