Plastic Deformation of Nano-Single Crystal Co-Cr-Ni- Fe-Mn High Entropy Alloy in Tension From ۱۰ K to ۱۰۰۰ K by Atomistic Simulations

The plastic deformation behavior of nano-single crystals of the equiatomic CoCrNiFeMn high entropy alloy (HEA) with the face-centered cubic structure has been studied in tension as a function of temperature from ۱۰ K to ۱۰۰۰ K using atomistic simulations. It was found that the critical stress for the slip was decreased with the increase in temperature. The results showed that the temperature had a substantial effect on the deformation mechanism. Intrinsic stacking faults and dislocations observed extensively at ۱۰ K but not substantially at a temperature of ۱۰۰۰ K. Plastic deformation at a temperature of ۱۰ K has occurred by means of partial dislocations slip whereas slip and amorphization is observed at ۱۰۰۰ K.

کلیدواژه ها:

High entropy alloy ، Nano-crystal ، deformation ، phase transformation ، Amorphization