Title
Carbide Formation in Refractory Mo 15 Nb 20 Re 15 Ta 30 W 20 Alloy under a Combined High-Pressure and High-Temperature Condition.
Abstract
In this work, the formation of carbide with the concertation of carbon at 0.1 at.% in refractory high-entropy alloy (RHEA) Mo(15)Nb(20)Re(15)Ta(30)W(20)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_L1(2)phase appeared at 6 GPa and 809 degrees 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.
Year
DOI
Venue
2020
10.3390/e22070718
ENTROPY
Keywords
DocType
Volume
high-entropy alloy,compression deformation,synchrotron x-ray diffraction,diamond anvil cell,high-pressure and high-temperature property
Journal
22
Issue
ISSN
Citations 
7
1099-4300
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Congyan Zhang100.34
Uttam Bhandari200.34
Congyuan Zeng300.34
Huan Ding400.34
Shengmin Guo511.04
Jinyuan Yan610.69
Shizhong Yang7738.40