@article{Kong2024, 
author = {Qingyi Kong and Lei Chen and Sijia Huo and Kunxuan Li and Wenyu Lu and Yujin Wang and Yu Zhou},
title = {Phase transition of multi-component (TiZrVNb)C ceramics—Part II: From single phase to multiple phases via adjusting V content},
year = {2024},
journal = {Journal of Advanced Ceramics},
volume = {13},
number = {5},
pages = {689-698},
keywords = {mechanical properties, microstructure evolution, multi-component ceramics, phase decomposition, multiple phases},
url = {https://www.sciopen.com/article/10.26599/JAC.2024.9220889},
doi = {10.26599/JAC.2024.9220889},
abstract = {To address the relatively mediocre mechanical properties of single-phase multi-component carbide ceramics, a phase transition from a single phase to multiple phases was proposed to achieve superior mechanical properties. A series of (TiZrVxNb)C0.8 ceramics with different V contents were fabricated by spark plasma sintering (SPS). The influence of the V content on the phase composition, microstructural evolution, and mechanical properties was investigated in detail. The transition behavior from a single phase to multiple phases is discovered and discussed. The formation of the Zr-rich phase and Zr-poor phase can be attributed to the increase in lattice distortion and mixed enthalpy caused by the addition of V. A nanometer lamellar structure with a semi-coherent interface obtained via in situ decomposition is reported for the first time in multi-component carbide ceramics. The semi-coherent interfaces with high dislocation density and strain concentration effectively improve the mechanical properties, grain refinement, and multi-phase formation. The optimal comprehensive mechanical properties of the Vickers hardness (26.3 GPa), flexural strength (369 MPa), and fracture toughness (3.1 MPa·m1/2) were achieved for the sample with 20 mol% V.}
}