Journal
MATERIALS LETTERS
Volume 323, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2022.132548
Keywords
Refractory high-entropy alloy; Hot forging; Impact toughness; Deformation and fracture; Microstructure
Funding
- National key research and development program [2018YFB0703402]
- National Natural Science Foundation of China [52074257]
- Chinese Academy of Sciences [ZDBS-LY- JSC023]
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A Ti3Zr1.5NbVAl0.25 refractory high entropy alloy with excellent mechanical properties and toughness, prepared by vacuum melting, hot forging, and annealing, is suitable for advanced structural applications.
A Ti3Zr1.5NbVAl0.25 refractory high entropy alloy (RHEA) was prepared by vacuum melting and subsequently subjected to hot forging and annealing at elevated temperatures. The as-prepared alloy has a single body centered cubic (BCC) phase structure with a balanced matching of strength and toughness. It is shown that tensile yield strength and fracture elongation of this alloy are 899 MPa and 24.50%, respectively. In addition, the Charpy V-notch impact toughness of the Ti3Zr1.5NbVAl0.25 alloy was measured to be 119. 5 J/cm(2), which is better than most traditional alloys and HEAs. The superior quasi-static and dynamic mechanical properties synergy makes this RHEA attractive for advanced structural applications.
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