FCC结构高熵合金的析出强化研究进展

High entropy alloys (HEAs) are a new kind of alloys, which break through the traditional alloy design with one or two elements as principal constituent and a few elements as auxiliary constituent. As an important branch of high entropy alloy system, FCC structure HEAs show excellent properties, such as high damage tolerance, good irradiation resistance, high wear resistance and corrosion resistance. However, the strength-ductility tradeoff dilemma of FCC structure HEAs severely limits their engineering applications. Previous researches indicate that precipitation strengthening can effectively improve the strength of FCC structure HEAs and produce excellent strength-ductility synergy properties. The research progress on precipitation strengthening of FCC structure HEAs was mainly introduced, including incoherent and coherent precipitates. The current research status and underlying influence mechanisms of precipitation-strengthening were briefly reviewed. The future prospective of precipitation-strengthening in FCC structure HEAs was also discussed.