TY  - JOUR
ID  - ITNYREPOID3009
UR  - https://itny.ac.id
EP  - 13
SP  - 1
Y1  - 2021/02//
SN  - .
TI  - Influence of V and Heat Treatment on Characteristics of
WMoNbTaV Refractory High?Entropy Alloy Coatings by   
Mechanical Alloying
AV  - public
A1  - Chun?Liang, Chen
A1  - ., Sutrisna
N2  - Refractory high?entropy alloy (RHEA) is one of the most promising materials for use in
high?temperature structural materials. In this study, the WMoNbTaV coatings on 304 stainless steel
substrates has been prepared by mechanical alloying (MA). Effects of V addition and subsequent
heat treatment on properties of the WMoNbTaV coatings were investigated. The results show that
the RHEA coatings with nanocrystalline body?centered cubic (BCC) solid?solution phase were gen?
erated by the mechanical alloying process. The presence of the V element promotes a uniform mi?
crostructure and homogeneous distribution of composition in the RHEA coatings due to improving
alloying efficiency, resulting in an increase of hardness. After the annealing treatment of the RHEA
coatings, microstructure homogeneity was further enhanced; however, the high affinity of Ta for
oxygen causes the formation of Ta?rich oxides. Annealing also removes strain hardening generated
by high?energy ball milling and thus decreases the hardness of the RHEA coating and alters micro?
structure evolution and mechanical properties.
Keywords: refractory high?entropy alloy; coating; mechanical alloying; heat treatment
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