Microstructure and Mechanical Properties of High-Entropy Alloy Co₂₀Cr₂₆Fe₂₀Mn₂₀Ni₁₄ Processed by High-Pressure Torsion at 77 K and 300 K.

ABSTRACT: In this work, the mechanical characteristics of high-entropy alloy Co₂₀Cr₂₆Fe₂₀Mn₂₀Ni₁₄ with low-stacking fault energy processed by cryogenic and room temperature high-pressure torsion (HPT) were studied. X-ray diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) analyses were performed to identify the phase and microstructure variation and the mechanical properties characterized by Vickers hardness measurements and tensile testing. Cryogenic HPT was found to result in a lower mechanical strength of alloy Co₂₀Cr₂₆Fe₂₀Mn₂₀Ni₁₄ than room temperature HPT. Microstructure analysis by SEM and TEM was conducted to shed light on the microstructural ch

SUBMITTER: Moon J 

PROVIDER: S-EPMC6056509 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature