Microstructure and mechanical properties of Ti3SiC2 MAX phases sintered by hot pressing

  • Sheida Haji Amiri Department of Materials Science and Engineering, University of Tabriz, Tabriz, Iran
  • Nasser Pourmohammadie Vafa Department of Materials Science and Engineering, University of Tabriz, Tabriz, Iran

Abstract

This study aimed to investigate the effect of sintering temperature on Ti3SiC2 samples' microstructure and mechanical properties, including three-point flexural strength, Vickers hardness, and fracture toughness. Therefore, Ti3SiC2 samples were sintered under a vacuum atmosphere at a pressure of 35 MPa for 30 minutes at two temperatures of 1500 and 1550 °C by hot pressing. The microstructure obtained from the fracture cross-section of the samples shows that by increasing the sintering temperature to 1550 °C the microstructure of this sample becomes larger than the sintered sample at 1500 °C. Also, increasing the sintering temperature to 1550 °C causes the decomposition of Ti3SiC2 to TiC, which can be seen in the X-ray diffraction pattern (XRD). In addition, the relative density of the sintered sample at 1550 °C is 98.08% which is higher than that of the sintered sample at 1500 °C with the result of 89%. On the other hand, the three-point flexural strength (227.5 MPa), the Vickers hardness (~9 GPa), and the fracture toughness (8.6 MPa.m1/2) of the sintered sample at 1500 °C are higher due to the fine-grained structure.

Downloads

Download data is not yet available.
Keywords: MAX phase, Ti3SiC2, Hot pressing, Microstructure, Mechanical properties
Microstructure and mechanical properties of Ti3SiC2 MAX phases sintered by hot pressing
Submitted
2021-11-22
Published
2021-12-27
How to Cite
Haji Amiri, S., & Pourmohammadie Vafa, N. (2021). Microstructure and mechanical properties of Ti3SiC2 MAX phases sintered by hot pressing. Synthesis and Sintering, 1(4), 216-222. https://doi.org/10.53063/synsint.2021.1472
Section
Articles