Next Article in Journal
Estimation of the Gender Ratio of Chickens Based on Computer Vision: Dataset and Exploration
Previous Article in Journal
Evolving Dynamic S-Boxes Using Fractional-Order Hopfield Neural Network Based Scheme
Open AccessArticle

Carbide Formation in Refractory Mo15Nb20Re15Ta30W20 Alloy under a Combined High-Pressure and High-Temperature Condition

1
Department of Computer Science, Southern University and A&M College, Baton Rouge, LA 70813, USA
2
Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
3
Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
*
Author to whom correspondence should be addressed.
Entropy 2020, 22(7), 718; https://doi.org/10.3390/e22070718
Received: 11 June 2020 / Revised: 22 June 2020 / Accepted: 26 June 2020 / Published: 28 June 2020
(This article belongs to the Special Issue High Entropy Materials)
In this work, the formation of carbide with the concertation of carbon at 0.1 at.% in refractory high-entropy alloy (RHEA) Mo15Nb20Re15Ta30W20 was studied under both ambient and high-pressure high-temperature conditions. The x-ray diffraction of dilute carbon (C)-doped RHEA under ambient pressure showed that the phases and lattice constant of RHEA were not influenced by the addition of 0.1 at.% C. In contrast, C-doped RHEA showed unexpected phase formation and transformation under combined high-pressure and high-temperature conditions by resistively employing the heated diamond anvil cell (DAC) technique. The new FCC_L12 phase appeared at 6 GPa and 809 °C and preserved the ambient temperature and pressure. High-pressure and high-temperature promoted the formation of carbides Ta3C and Nb3C, which are stable and may further improve the mechanical performance of the dilute C-doped alloy Mo15Nb20Re15Ta30W20. View Full-Text
Keywords: high-entropy alloy; compression deformation; synchrotron x-ray diffraction; diamond anvil cell; high-pressure and high-temperature property high-entropy alloy; compression deformation; synchrotron x-ray diffraction; diamond anvil cell; high-pressure and high-temperature property
Show Figures

Figure 1

MDPI and ACS Style

Zhang, C.; Bhandari, U.; Zeng, C.; Ding, H.; Guo, S.; Yan, J.; Yang, S. Carbide Formation in Refractory Mo15Nb20Re15Ta30W20 Alloy under a Combined High-Pressure and High-Temperature Condition. Entropy 2020, 22, 718.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop