Year-end Sale % OFF 
Abstract
The microstructure, hardness and wear performance of CrCuFeTiNi high entropy alloy were evaluated. The alloy was produced by mixing constituent elements, consolidated and melted using vacuum arc furnace. The X-ray diffraction analysis confirmed that the alloy is composed of FCC and BCC simple phases. The microstructure contains three regions that were rich in Cu, Cr and Fe which resulted from segregation of constituent elements. The Vickers micro hardness of the alloy was determined as HV0.5 = 510 ± 7 MPa. The wear performance of the alloy was also studied using WC balls under two load conditions. The volume loss was evaluated, accompanied by analysis of the wear tracks and debris using SEM images and EDS. The main wear mechanisms were ploughing, adhesion and oxidation-dominated wear.
Highlights
New design concept in alloy development was established independently by Yeh [1] and Cantor [2] about eleven years ago
Unlike in traditional metallic systems, where one element serves as the matrix and other alloying elements are carefully added in specified proportions, to avoid the formation of unwanted phases, high entropy alloys (HEAs) are known to have simple structures such as face centered cubic (FCC), body centered cubic (BCC) or a mixture of both (FCC+BCC) structures [3]
It can be observed that the CrCuFeNiTi alloy composed mainly of simple phases of face centered cubic (FCC), and body centered cubic (BCC)
Summary
New design concept in alloy development was established independently by Yeh [1] and Cantor [2] about eleven years ago. Unlike in traditional metallic systems, where one element serves as the matrix and other alloying elements are carefully added in specified proportions, to avoid the formation of unwanted phases, HEAs are known to have simple structures such as face centered cubic (FCC), body centered cubic (BCC) or a mixture of both (FCC+BCC) structures [3]. This unique attribute of HEAs has been ascribed to high entropy of mixing which often suppresses the formation of metastable and complex phases [4]. The ability of HEAs to retain some of its unique properties at high temperatures has made the alloys a potential substitute for nickel based super alloys in high temperature environments as well as for making machine tools where creep and wear resistant materials are desirable
Sign-in/Register to view highlights & summary 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.
