烟台大学学报（自然科学与工程版）2025，Vol.38Issue(4)：435-441,7.DOI:10.13951/j.cnki.37-1213/n.240412
(CoCrFeNi)91Al6Ti3高熵合金的微观组织及力学性能
Microstructure and Mechanical Properties of(CoCrFeNi)91Al6Ti3 High Entropy Alloy
摘要
Abstract
In the present paper,the(CoCrFeNi)91Al6Ti3 high-entropy alloy was prepared by vacuum induction melting,cold rolling,and heat treatment.The tensile properties of this alloy at both room and high temperatures were systematically investigated.Additionally,the deformation mechanisms of the alloy were discussed and ana-lyzed.The results indicate that with the increasing temperature,the tensile and yield strengths of the(CoCrFe-Ni)91 Al6Ti3 alloy gradually decrease,while the elongation first increases and then decreases.The alloy shows excellent strength combined with considerable plasticity at 600 ℃.The primary strengthening phases in the(CoCrFeNi)91Al6Ti3 alloy are high-density L12 nanoparticles,and blocky and flaky L21 phases.The synergistic effect of these two phases endows the alloy with excellent tensile properties at 600 ℃,i.e.,a tensile strength of 754 MPa and an elongation of 22.9％.Electron backscatter diffraction(EBSD)and transmission electron microscopy(TEM)analysis revealed that the generation of both dislocations and stacking faults contributed to the good ductility of the(CoCrFeNi)91Al6Ti3 alloy.关键词
高熵合金/组织结构/力学性能/析出相Key words
high entropy alloys(HEAs)/microstructure/mechanical property/precipitate分类
矿业与冶金引用本文复制引用
吕秀秀,李连洲,阮晶晶,朱礼龙..(CoCrFeNi)91Al6Ti3高熵合金的微观组织及力学性能[J].烟台大学学报（自然科学与工程版）,2025,38(4):435-441,7.基金项目
山东省自然科学基金资助项目(ZR2021QE102) （ZR2021QE102）
山东省优秀青年科学基金(海外)资助项目(2022HWYQ-084) （海外）
2021年山东省高等学校"青创人才引育计划". （）
