Review Progressin B2 StrengthenedFace-centeredCubic Alloys
Author of the article:ZHANG Jiaxue1,2,3,4,ZHANG Menghao1,2,3,4,WANG Weijun5,6,YE Xinlan1,2,3,4, CHEN Wenhui1,2,3,4,ZHI Hui
Author's Workplace：1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072,China ; 2. Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi'an 710072,China; 3. Innovation Center NPU·Chongqing, Chongqing 401135,China; 4. Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518063,China; 5. Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031,China; 6. Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031,China
Key Words：B2 phase; microstructure; deformation mechanisms; mechanical properties; corrosion behavior
Abstract：
Face-centered cubic (FCC) alloys have been extensively used in aerospace, energy, and other engineering fields owing to their excellent plasticity and toughness. However, in practical applications, these alloys typically encounter an intrinsic strength-ductility trade-off. The introduction of the B2 phase has recently emerged as a promising approach to address this challenge. This paper reviews the research progress on B2 phase-strengthened FCC alloys, focusing on the compositional characteristics, crystal structure, nucleation mechanisms, and effects of the B2 phase on mechanical properties and corrosion behavior. On this basis, this paper emphasizes the differences in the role of B2 phase morphology and scale in strengthening mechanisms and analyses its impact on corrosion resistance and control strategies. Finally, the key issues in current research are summarized, and perspectives on the future development of synergistic optimization of strength, plasticity, and corrosion resistance in B2 phase-modulated FCC alloys are offered.
