铸造2024，Vol.73Issue(4)：469-475,7.
深冷处理对Al1.2CrFe2Ni2高熵合金组织和性能的影响
Effect of Cryogenic Treatment on Microstructure and Properties of Al1.2CrFe2Ni2 High Entropy Alloy
摘要
Abstract
Al1.2CrFe2Ni2 high entropy alloy ingot was prepared by non-consumable vacuum arc melting furnace,and cryogenic treatment was carried out for different time by liquid nitrogen.The effect of cryogenic treatment time on the microstructure and properties of the alloy was analyzed.The results showed that with the extension of cryogenic treatment time,the grain size of Al1.2CrFe2Ni2 high entropy alloy decreased first and then increased,and B2 nanophase precipitated at the grain boundary of the alloy,and its volume fraction increased first and then decreased.Cryogenic treatment had the effect of fine grain strengthening and precipitation strengthening on Al1.2CrFe2Ni2 high entropy alloy.When the cryogenic time was 24 h,the hardness,compressive yield strength and friction and wear properties of the alloy reached the maximum.The hardness and yield strength were HV 607.5 and 1 259.9 MPa,respectively,which were 18.7%and 5.2%higher than those of the as-cast alloy.The average friction coefficient decreased from 0.89 to 0.66.关键词
高熵合金/深冷处理/压缩性能/维氏硬度/摩擦磨损性能Key words
high entropy alloy/cryogenic treatment/compression performance/Vickers hardness/friction and wear properties分类
矿业与冶金引用本文复制引用
谢思晨,张伟,齐浩,李广龙,李荣德,曲迎东..深冷处理对Al1.2CrFe2Ni2高熵合金组织和性能的影响[J].铸造,2024,73(4):469-475,7.基金项目
辽宁省自然科学基金(No.2021-BS-150) （No.2021-BS-150）
辽宁省教育部科学技术计划项目(No.LJKZ0116). （No.LJKZ0116）
