Journal article 1567 views 672 downloads
A novel High-Entropy Alloy-based composite material
Sephira Riva,
Adam Tudball,
Shahin Mehraban,
Nicholas Lavery 
,
Stephen G.R. Brown,
Kirill V. Yusenko,
Steve Brown
,
Stephen G.R. Brown,
Kirill V. Yusenko,
Steve Brown
Journal of Alloys and Compounds, Volume: 730, Pages: 544 - 551
Swansea University Authors:
Nicholas Lavery , Steve Brown
-
PDF | Accepted Manuscript
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DOI (Published version): 10.1016/j.jallcom.2017.09.274
Abstract
This study reports the results of the addition of different reinforcing agents (i.e. nano-diamonds, SiC, Sc2O3, h-BN, c-BN and CN) on the sintering process of the B2-structured Al2CoCrFeNi High-Entropy Alloy. The best candidate for further thermal, electrical and mechanical characterization was chos...
| Published in: | Journal of Alloys and Compounds |
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| ISSN: | 0925-8388 |
| Published: |
2018
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa35713 |
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| Abstract: |
This study reports the results of the addition of different reinforcing agents (i.e. nano-diamonds, SiC, Sc2O3, h-BN, c-BN and CN) on the sintering process of the B2-structured Al2CoCrFeNi High-Entropy Alloy. The best candidate for further thermal, electrical and mechanical characterization was chosen to be the alloy containing 2 wt% nano-diamonds. The composite was prepared using spark-plasma sintering of pre-alloyed powders and characterized with SEM-EDX, DSC, Laser Flash Analysis (LFA), electrical conductivity and Seebeck coefficient, dilatometry, Young's modulus, Vicker's hardness, 3-points flexural test. It shows unexpectedly low thermal expansion coefficient (from 3×10−6 to 17×10−6 K−1 between RT and 500 °C), high electrical resistivity and Seebeck coefficient and hardness comparable to the sintered blank Al2CoCrFeNi. |
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| Keywords: |
High-entropy alloys; Metal matrix composites; Spark plasma sintering; Nano-diamonds composite; Thermo-electric properties |
| College: |
Faculty of Science and Engineering |
| Start Page: |
544 |
| End Page: |
551 |