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金属学报（英文版）
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2026年9期
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Advanced lightweight Fe-Mn-Al-Ni-C compositionally complex steels:Alloy design,microstructural evolution,and deformation mechanisms
Advanced lightweight Fe-Mn-Al-Ni-C compositionally complex steels:Alloy design,microstructural evolution,and deformation mechanisms
摘要
The development of high-performance steels characterized by the synergistic combination of high strength,large ductility and low density is essential for energy conservation and the mitigation of global carbon emissions.Inspired by the high entropy alloy design strategy,the quinary system Fe-Mn-Al-Ni-C steels,as a novel class of compositionally complex steels(CCSs),have emerged as a prominent research frontier.We provide a compre-hensive review of the alloy design strategies in this field,delineating the evolution from traditional Fe-Mn-Al-C lightweight steels to advanced CCSs.We systematically examine the microstructural transition toward dual-nanoprecipitation enabled by increased compositional complexity.Furthermore,the underlying strengthening and strain-hardening mechanisms,specifically dual-precipitation strengthening,twinning-induced plasticity(TWIP),and the shearing of brittle B2 intermetallics,are critically reviewed.Finally,we propose critical future research directions aimed at further enhancing the mechanical property and industrial viability of CCSs.
年，卷(期)：
2026, 47(9)
机标分类号：
TP311
TN911.22
F27
在线出版日期：
2026年10月26日
