Study of NiFeCoCr medium entropy alloy as a binder phase on W–Mo heavy tungsten alloy by secondary ball milling

., Chun-Liang Chen and ., Sutrisna (2021) Study of NiFeCoCr medium entropy alloy as a binder phase on W–Mo heavy tungsten alloy by secondary ball milling. Intermetallics.

Text Study of FeNiCoCr.pdf Download (686kB)

Abstract

The binder phase of NiFeCoCr medium entropy alloy (MEA) dispersed in W–Mo heavy tungsten alloy synthesized
by secondary ball milling was studied. The results show that the MEA binder phase with a single FCC solid
solution structure was obtained after the pre-milling process. A considerable reduction of Cr content in the MEA
binder phase encourages the dissolution of Cr into the tungsten matrix and forms the Cr-rich oxides after the
sintering process. TEM investigations show that the Cr-rich oxide has been indexed as the (Cr, Fe)O3 and the
twinned structure was observed in the FCC MEA binder phase. Besides, as the sintering temperature was
increased to 1450 ◦C, liquid phase sintering is dominant in the model alloys, leading to a decrease in the hardness
of the model alloys.

Actions (login required)

View Item