High-temperature strength of directionally solidified Al2O 3/YAG/ZrO2 eutectic composite

Yonosuke Murayama, Shuji Hanada, Jong Ho Lee, Akira Yoshikawa, Kazutoshi Shimizu, Narihto Nakagawa, Yoshikawa Waku, Tsuguo Fukuda

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

A2O3/YAG/ZrO3 eutectic Melt-Growth-Composites (MGCs) were unidirectionally solidified by the modified-pulling-down method (MPD) and the Bridgman type method, in which a crucible was brought down at different speeds. The microstructures and crystallographic textures were studied by field emission scanning electron microscopy (FE-SEM) and electron backscattered pattern (EBSP) method. The high-temperature strength was investigated by compression tests. All MGC rods show strong preferred growing orientation, although the structural size of eutectic microstructure among MGC rods was different The high-temperature strength of MGC rods is dependent on orientation, compression temperature and strain rate. The high-temperature strength of MGC rods is controlled by the anisotropic strength of constituent Al2O3, as well as the structural size of eutectic microstructure.

Original languageEnglish
Pages (from-to)1295-1300
Number of pages6
JournalMaterials Science Forum
Volume475-479
Issue numberII
DOIs
Publication statusPublished - 2005
EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
Duration: 2004 Nov 22004 Nov 5

Keywords

  • AlO/YAG/ZrO eutectic composite
  • Crystallography texture
  • Electron backscattered pattern (EBSP)
  • High-temperature strength
  • Melt-growth-composite (MGC)
  • Strength anisotropy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Murayama, Y., Hanada, S., Lee, J. H., Yoshikawa, A., Shimizu, K., Nakagawa, N., Waku, Y., & Fukuda, T. (2005). High-temperature strength of directionally solidified Al2O 3/YAG/ZrO2 eutectic composite. Materials Science Forum, 475-479(II), 1295-1300. https://doi.org/10.4028/0-87849-960-1.1295