Analysis of fracture toughness and TiC/Al2O3 composites

F. Kamiya, H. Toda, T. Kobayashi, M. Takasu, N. Okamoto

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


Al2O3/TiC composites having various fraction ratio between Al2O3 and TiC phases are prepared through the hot-press process. Static and dynamic fracture toughness values are measured experimentally. Crack deflection angle and areal fraction of each fracture path (intergranular and transgranular fractures both through the Al2O3 and TiC phases and Al2O3/TiC interface) are measured on lateral surface of specimens and fracture surfaces, respectively. Local fracture toughness in each fracture path is analyzed using the above data. Measured fracture toughness increases with the increase in the mass percent TiC phase. Local fracture toughness is higher for the passes through the TiC phase than those through the Al2O3 phase, whether it is transgranular or intergranular. The weakest path is the Al2O3/TiC interface in all of the samples. Microstructural configuration for improved fracture toughness in Al2O3/TiC composites is discussed in light of local fracture toughness at both grain interior and boundaries.

ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
出版ステータス出版済み - 2001

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学


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