Different-Shaped Ultrafine MoNbTaW HEA Powders Prepared via Mechanical Alloying

Materials (Basel). 2018 Jul 20;11(7):1250. doi: 10.3390/ma11071250.


Different-shaped ultrafine MoNbTaW high-entropy alloy powders were firstly prepared by a convenient mechanical alloying method. The phase composition and microstructure of the powders were characterized. The powders are ultrafine with nano-sized grains and a good homogeneous microstructure. All the powders have a single body-centered cubic solid solution phase and form the high-entropy alloy during mechanical alloying. These powders with different shapes are quite attractive for developing high-performance MoNbTaW high-entropy alloy bulk and coatings combined with a following sintering, spraying, or additive manufacturing technique.

Keywords: high-entropy alloy; mechanical alloying; microstructure; powder technology.