Paper Info
Title
High-Temperature Wear Behaviour of Spark Plasma Sintered AlCoCrFeNiTi High-Entropy Alloy.
Abstract
In this study, the wear behaviour of a powder metallurgically produced AlCoCrFeNiTi0.5 high-entropy alloy (HEAs) is investigated at elevated temperatures. Spark plasma sintering (SPS) of inert gas atomised feedstock enables the production of dense bulk material. The microstructure evolution and phase formation are analysed. The high cooling rate in the atomisation process results in spherical powder with a microstructure comprising two finely distributed body-centred cubic phases. An additional phase with a complex crystal structure precipitates during SPS processing, while no coarsening of microstructural features occurs. The wear resistance under reciprocating wear conditions increases at elevated temperatures due to the formation of a protective oxide layer under atmospherical conditions. Additionally, the coefficient of friction (COF) slightly decreases with increasing temperature. SPS processing is suitable for the production of HEA bulk material. An increase in the wear resistance at elevated temperature enables high temperature applications of the HEA system AlCoCrFeNiTi0.5.
Year
DOI
Venue
2019
10.3390/e21060582
ENTROPY
Keywords
DocType
Volume
high-entropy alloy (HEA),compositionally complex alloy (CCA),spark plasma sintering (SPS),phase composition,microstructure,wear,high temperature
Journal
21
Issue
ISSN
Citations 
6
1099-4300
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Martin Löbel121.25
Thomas Lindner221.25
Robert Pippig300.34
Thomas Lampke422.60