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A high-entropy V35Ti35Fe15Cr10Zr5 alloy with excellent high-temperature strength.
- Source :
-
Materials & Design . May2017, Vol. 121, p229-236. 8p. - Publication Year :
- 2017
-
Abstract
- Low-activation structural materials for fusion applications beyond 700 °C are desired. High-entropy alloys (HEAs) with excellent properties at elevated temperatures are suitable for use in nuclear reactors. A newly developed V 35 Ti 35 Fe 15 Cr 10 Zr 5 HEA was fabricated by vacuum arc melting and the microstructure of as-cast and annealed sample was found to be composed of BCC solid solution phases. It was interesting to find that the yield strength of as-cast V 35 Ti 35 Fe 15 Cr 10 Zr 5 HEA increased with increasing the temperature below 500 °C, and it was much higher than that of vanadium alloy or martensitic steel for fusion reactors in the temperature range of room temperature to 900 °C. At 700 °C, the yield strength of V 35 Ti 35 Fe 15 Cr 10 Zr 5 HEA was about 500 MPa higher than that of vanadium alloy or martensitic steel, showing promise for high temperature applications. V 35 Ti 35 Fe 15 Cr 10 Zr 5 alloy had a relative low ductility below 700 °C, while the alloy exhibited a good ductility above 700 °C. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02641275
- Volume :
- 121
- Database :
- Academic Search Index
- Journal :
- Materials & Design
- Publication Type :
- Academic Journal
- Accession number :
- 121973042
- Full Text :
- https://doi.org/10.1016/j.matdes.2017.02.029