Characterization and evaluation of CuCrFeV(Ti, Ta, W) system for High Heat Flux applications

• Main Authors: Monge, M.A (Author), Muñoz, A. (Author), Rodriguez-Lopez, A. (Author), Savoini, B. (Author)
• Format: Article
• Language: English
• Published: Elsevier Ltd 2022
• Subjects: Arc-melting; As-cast; Binary alloys; Cast state; Chromium alloys; Compression; Copper alloys; Crystal structure; Heat flux; High entropy alloy; High entropy alloys; High heat flux; High-entropy alloys; Iron alloys; Melting; Microstructure; Microstructures and mechanical properties; Nano indentation; Nanoindentation; Reduced activation alloy; Reduced activation alloys; Sigma phase; Tantalum alloys; Thermal aging; Titanium alloys; Tungsten alloys
• Online Access: View Fulltext in Publisher
• ISBN: 23521791 (ISSN)
• DOI: 10.1016/j.nme.2022.101187

Cu5Cr35Fe35V20-X5, with X = Ti, Ta or W, alloys were produced by arc melting to assess their feasibility to be used as structural materials and as interlayer in cooling systems. The microstructure and mechanical properties of the materials were analyzed in as-cast and aged states. In the as-cast state the structure of the three alloys is BCC, but formation of the intermetallic Fe7Ta3 is observed in Cu5Cr35Fe35V20Ta5. Thermal aging treatment at 700 °C caused significant changes in the microstructure of Cu5Cr35Fe35V20W5 and the formation of the sigma phase. Thermal treated Cu5Cr35Fe35V20Ta5 and Cu5Cr35Fe35V20W5 exhibit high mechanical strength and excellent compressive ductility but show work softening due to the appearance of dynamic recovery mechanisms. Type-A serration behavior is observed for Cu5Cr35Fe35V20W5. Both, the complexity of their microstructures and their differences are responsible for the different mechanical behavior of the three alloys. © 2022 The Authors