Influence of Al content on thermal stability of nanocrystalline AlxCoCrFeNi high entropy alloys at low and intermediate temperatures
Thermal stability of mechanically alloyed nanocrystalline Al x CoCrFeNi (x= 0, 0.3, 0.6, 1
mol) high entropy alloys (HEAs) has been investigated for the low and intermediate
temperature range of 673–1073 K. Single phase FCC structure is observed in the as milled
CoCrFeNi. A mixture of FCC and BCC phases is exhibited by×= 0.3, 0.6 and 1, alloys where
the volume fraction of BCC increases with increasing Al content. Phase evolution in heat-
treated Al x CoCrFeNi HEAs proceeds via increasing BCC fraction at 673 K, followed by …
mol) high entropy alloys (HEAs) has been investigated for the low and intermediate
temperature range of 673–1073 K. Single phase FCC structure is observed in the as milled
CoCrFeNi. A mixture of FCC and BCC phases is exhibited by×= 0.3, 0.6 and 1, alloys where
the volume fraction of BCC increases with increasing Al content. Phase evolution in heat-
treated Al x CoCrFeNi HEAs proceeds via increasing BCC fraction at 673 K, followed by …
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