FeCrV-based multi-component alloys with the auspicious potential as advanced nuclear energy materials: A comprehensive review

Multi-component alloys (MCAs) significantly broaden the spectrum of alloy design, opening up innovative pathways for enhancing material performance. Over the past decade, extensive global research efforts have elucidated the outstanding mechanical properties and the potential for exceptional corrosion and irradiation resistance exhibited by MCAs. FeCrV-based MCAs with body-centered cubic (BCC) structures, as an emerging MCA family, are regarded as having the auspicious potential for high-temperature applications within advanced nuclear reactors. However, the stringent reactor conditions including elevated temperatures, severe irradiation damage, high mechanical stress, and complex corrosive media, necessitate a thorough assessment of the materials' properties to ensure their reliable performance in nuclear reactors. This review synthesizes the contemporary advancements in FeCrV-based MCAs, encompassing aspects such as synthesis methodologies, mechanical properties, strengthening mechanisms, thermal stability, thermal properties, irradiation tolerance, and corrosion resistance. Despite the fact that the application of FeCrV-based MCAs in nuclear contexts remains in its incipient stage, the extant research outcomes furnish a solid foundation for comprehending and anticipating the behaviors of materials with varying compositions and microstructures. Further exploration into the relevant mechanisms and the comprehensive assessment of material microstructures and properties under conditions akin to the reactor environment are imperative for advancing our understanding. Additionally, a critical refinement of potential candidates is essential for subsequent in-depth evaluation and engineering validation.