Development of high-entropy metallic glass matrix composites with enhanced compressive mechanical properties at elevated temperatures

Abstract

Metallic glass matrix composites (MGMCs) have received intensive attention due to their higher strength at room temperature compared with traditional metallic glasses. However, they suffer from lose of strength and microstructural instability at elevated temperatures due to softening and crystallization of the glass matrix. Here, a novel Ti-Zr-Hf-Nb-Ta-Cu-Be high-entropy MGMCs with improved high-temperature mechanical properties was developed through the multi-principle element alloying strategy of refractory elements, which effectively retards the degradation of high-temperature mechanical properties compared with traditional MGMCs. The results provide an effective route to design high-performance high-entropy MGMCs for the potential application in a wide temperature range.

Keywords

• Metallic glass matrix composites
• High-entropy alloys
• Strengthening mechanisms