Abstract
Previous studies have reported dramatical strengthening of carbides in NiCoFeCr high-entropy alloy. The feature of carbides, especially species, morphology and distribution, plays an important role in its properties. Hence, their precipitation behavior in the compositionally complex NiCoFeCr HEA deserves to explore. Here, the carbide precipitation behavior in a (NiFeCoCr)99.75C0.25 alloy at 800 °C was studied. Intergranular and intragranular M23C6 carbides form with quite different morphologies and change gradually with the prolonging time. Intragranular carbides with needle-like and rhombus morphologies have a parallel OR of (100)M23C6//(100)matrix and [013]M23C6∥[013]matrix with matrix, which were formed on (111) plane and (100) plane respectively.
Published Version
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