Research progress on precipitation strengthening of FCC structure high-entropy alloys

doi:10.13251/j.issn.0254-6051.2020.09.001

Abstract

Abstract: 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.

Key words: high-entropy alloy(HEA), FCC structure, precipitation strengthening, strength-ductility synergy properties

CLC Number:

TB31

Lu Wenjie, Luo Xian, Huang Bing, Li Pengtao, Yang Yanqing. Research progress on precipitation strengthening of FCC structure high-entropy alloys[J]. Heat Treatment of Metals, 2020, 45(9): 1-9.

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