Reduced-activation complex concentrated alloys

作者：Wenqing Jiang, Yongxuan Shang, Junpeng Li, Yang Zhang, Zhongwu Zhang · 发表于：Critical reviews in solid state and materials sciences/CRC critical reviews in solid state and materials sciences · 年份：2025 · DOI：10.1080/10408436.2025.2533303 · 被引用次数：2 · 研究领域：High Entropy Alloys Studies、Advanced materials and composites、Metal and Thin Film Mechanics

In order to satisfy the stringent performance requirements for future advanced fission and fusion reactors, there is a need for the development of new high-performance, low-activation materials. Reduced-activation complex concentrated alloys (RACCAs) have been developed and investigated extensively very recently in response to this situation. RACCAs can provide excellent mechanical properties and radiation resistance at a wide temperature range. This article provides a thorough summary of the development of low-activation materials and the fundamental features of complex concentrated alloys (CCAs). We classify the RACCAs into four categories, based on their chemical composition: (1) reduced-activation complex concentrated titanium alloys (RACCTAs), (2) reduced-activation complex concentrated vanadium alloys (RACCVAs), (3) reduced-activation complex concentrated steels (RACCSs), and (4) reduced-activation complex concentrated tungsten alloys (RACCWAs). Most RACCAs possess a single-phase body-centered cubic (bcc) matrix, sometimes accompanied by the formation of precipitation phases such as Laves, B2, or σ phases. Due to its wide compositional space, RACCTAs cover a wide range of mechanical properties at room temperature, which can be compared with reduced-activation ferrite/martensite (RAFM) steels and ODS steels. The high strength can be derived from strong solid solution strengthening, short-range clustering strengthening, precipitation strengthening, etc. The deformation of...