Journal article
On the brittle-to-ductile transition of the as-cast TiVNbTa refractory high-entropy alloy
- Abstract:
- The fracture properties of as-cast TiVNbTa, a refractory high-entropy alloy (RHEA), were investigated using four-point bending tests from -139°C to 20°C under a strain-rate of 10−3 s−1. From those tests and fractography, the conditional fracture toughness values and the brittle-to-ductile transition temperature were obtained. The brittle-to-ductile transition temperature was between -47°C to -27°C, which gives an estimated activation energy value of 0.52±0.09 eV for the alloy. This study provides a preliminary understanding of the nature of dislocation motion in a relatively ductile RHEA.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, 880.5KB, Terms of use)
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- Publisher copy:
- 10.1016/j.mtla.2020.100940
Authors
- Publisher:
- Elsevier
- Journal:
- Materialia More from this journal
- Volume:
- 14
- Article number:
- 100940
- Publication date:
- 2020-10-22
- Acceptance date:
- 2020-10-21
- DOI:
- EISSN:
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2589-1529
- Language:
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English
- Keywords:
- Pubs id:
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1139119
- Local pid:
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pubs:1139119
- Deposit date:
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2020-10-22
Terms of use
- Copyright holder:
- Acta Materialia Inc.
- Copyright date:
- 2020
- Rights statement:
- © 2020 Acta Materialia Inc. Published by Elsevier B.V. All rights reserved.
- Notes:
-
This is the accepted manuscript version of the article. The final version is available from Elsevier at https://doi.org/10.1016/j.mtla.2020.100940
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