Journal
METALS
Volume 11, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/met11111748
Keywords
HEAs; hot pressing sintering; microstructure and mechanical behavior; dense and porous
Funding
- Guangdong Basic and Applied Basic Research Foundation [2019B1515120020]
- State Key Laboratory for Advanced Metals and Materials
- University of Science and Technology Beijing [2020Z-08]
- Chinese Funds for Creative Research Groups [51921001]
- National Science Foundation [DMR-1611180, 1809640]
- US Army Research Office [W911NF-13-1-0438, W911NF-19-2-0049]
- [2020-Z08]
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The refractory HEAs block material was prepared by powder sintering, resulting in bulk cubic alloy structure and complex metal compounds. The yield strengths were measured at 1201 and 700 MPa for TiZrNbMoV and NbTiAlTaV alloys, respectively.
The refractory HEAs block material was prepared by powder sintering, using an equal atomic proportion of mixed TiZrNbMoV and NbTiAlTaV metal powder raw materials. The phase was analyzed, using an XRD. The microstructure of the specimen was observed, employing a scanning electron microscope, and the compressive strength of the specimen was measured, using an electronic universal testing machine. The results showed that the bulk cubic alloy structure was obtained by sintering at 1300 & DEG;C and 30 MPa for 4 h, and a small amount of complex metal compounds were contained. According to the pore distribution, the formed microstructure can be divided into dense and porous zones. At a compression rate of 10(-4)s(-)(1), the yield strengths of TiZrNbMoV and NbTiAlTaV alloys are 1201 and 700 MPa, respectively.
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