Abstract
Segregation of solute elements and strengthening effects of CoCrNiCux medium-entropy alloys (MEAs) was investigated by a combination of experiments and Metropolis Monte Carlo (MC) simulations. Results revealed that the proper addition of Cu effectively improved the tensile strength and yield strength, which was attributed to the dual action of solid solution strengthening and grain refinement caused by the pinning of nano-size Cu-rich precipitates. Micro-voids readily nucleated at the interface between the Cu-lean and Cu-rich phases due to local uneven stress distribution and dislocation pile-ups, thereby promoting the crack initiation and propagation. Based on Metropolis MC simulations, the annealed structures revealed a typical local ordering character, and the short-range order (SRO) parameter revealed the atomic interactions and local chemical ordering of CoCrNiCu1.0 MEA.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
