Related Experiment Video
Updated: Jul 25, 2025
Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
Published on: September 28, 2016
Microstructural Evolution and Mechanical Properties of SiC/Al-40Si Composites Fabricated by High Pressure
Rong Zhang1,2, Chunming Zou2, Zunjie Wei2
1School of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China.
Abstract:
The microstructure and mechanical properties of SiC/Al-40Si composites prepared under high pressure were studied. As the pressure increases from 1 atm to 3 GPa, the primary Si phase in the Al-40Si alloy is refined. With increasing pressure, the composition of the eutectic point increases, the solute diffusion coefficient decreases exponentially, and the concentration of Si solute at the front of the solid-liquid interface of the primary Si is low, which contributes to the refining of the primary Si and inhibiting its faceted growth. The bending strength of SiC/Al-40Si composite prepared under 3 GPa was 334 MPa, which was 66% higher compared to the Al-40Si alloy prepared under the same pressure.
