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Microstructure and Mechanical Properties of Directional Order Porous Tisic Through Reactive Synthesis

SSRN, ISSN: 1556-5068
2022
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  • Usage
    170
    • Abstract Views
      146
    • Downloads
      24

Article Description

Directional order porous TiSiC has been prepared by freezing casting, which is embodied in lamellar porous and material structure. The maximum compression stress is higher than the disorder structure and increases with an increase of solid content with 22 MPa 49 MPa and 89 MPa with a solid content of 15%, 20% and 25%. While elastic deformation shows the opposite trend. And the Young modulus of directional order porous TiSiC is nearly linear, which indicated the mechanism can be explained by the parallel model. The reason why the fitting value deviates from the theoretical value has been investigated. Besides the deviation of the porous structure from the theoretical model. Unique properties provide porous TiSiC2 energy dissipation mechanism, cyclic loading at elastic stage indicated that energy dissipation (Wd) with each loop is from 0.0009 to 0.0139 MJ/m with the increase of porosity. The fracture failure behavior was explored, and it was found that there were two main forms of macroscopic failure: splitting and fragmentation. Found by microscopic observation, the absorbed-in-fracture energy in irreversible deformation in the plastic stage includes kink bands, crack extension and delamination.

Bibliographic Details

Wenbo Du; Zhengjun Yao; Fan Zhang; Changqing Shu; Zihe Wang; Shasha Zhang; Xuewei Tao; Rasmus Bjørk

Elsevier BV

Multidisciplinary; freezing cast; directional order porous Ti3SiC2; Mechanical property; mechanism analysis; energy dissipation

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