Micromechanical study on thermo-mechanical behavior of Ti-ZrO2 graded composites fabricated by  spark plasma sintering

Hideaki Tsukamoto; Yoshiki Komiya; Hisashi Sato; Yoshimi Watanabe

doi:10.1117/12.2026678

9 August 2013 Micromechanical study on thermo-mechanical behavior of Ti-ZrO₂ graded composites fabricated by spark plasma sintering

Hideaki Tsukamoto, Yoshiki Komiya, Hisashi Sato, Yoshimi Watanabe

Author Affiliations +

Proceedings Volume 8793, Fourth International Conference on Smart Materials and Nanotechnology in Engineering; 87931C (2013) https://doi.org/10.1117/12.2026678
Event: Fourth International Conference on Smart Materials and Nanotechnology in Engineering, 2013, Gold Coast, Australia

Abstract

The aim of this study is to investigate thermo-mechanical response of ZrO₂/Ti functionally graded materials (FGMs) fabricated by spark plasma sintering (SPS) based on a mean-field micromechanics model, which takes account of micro-scale stress relaxation due to interfacial diffusion between ceramic and metal phases as well as creep of both phases. A resistance to cyclic thermal shock loadings of FGMs with different compositional gradation patterns including Ti-rich, linear and ZrO₂-rich gradation patterns has been investigated. The results demonstrate that Ti-rich FGMs show superior properties among the tested FGM samples. Mean-field micromechanics-based examinations reveal that the range and ratio of thermal stresses in ZrO₂ surface layers in FGMs can affect cyclic thermal shock fracture behaviour but not mean thermal stresses.

Citation Download Citation

Hideaki Tsukamoto, Yoshiki Komiya, Hisashi Sato, and Yoshimi Watanabe "Micromechanical study on thermo-mechanical behavior of Ti-ZrO₂ graded composites fabricated by spark plasma sintering", Proc. SPIE 8793, Fourth International Conference on Smart Materials and Nanotechnology in Engineering, 87931C (9 August 2013); https://doi.org/10.1117/12.2026678

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