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Microstructural optimization of FexCrNiAl0.5Ti0.5 high entropy alloys toward high ductility
Ji, Yu1,2; Zhang, Long2; Lu, Xing1; Pang, Jingyu2; Lu, Yunzhuo1; Zhu, Zhengwang2; Fu, Huameng2; Zhang, Hongwei2; Li, Hong2; Zhang, Haifeng2
Corresponding AuthorZhang, Long(zhanglong@imr.ac.cn) ; Lu, Xing(lu@djtu.edu.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
2021-10-04
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume119Issue:14Pages:7
AbstractIt remains challenging to develop low-cost body-centered cubic (BCC) high-entropy alloys (HEAs) with superior mechanical properties. In this work, we investigated the microstructure and mechanical properties of BCC FexCrNiAl(0.5)Ti(0.5) HEAs containing L2(1) nanocrystals. With increasing the Fe content from Fe2 to Fe4 and Fe6, the formation of a big blocky L21 phase and a sigma phase can be fully suppressed, and the size and fraction of the L2(1) crystals also decrease. Fe4 and Fe6 HEAs exhibit an optimized dual-phase microstructure with high-density L2(1) nanocrystals homogeneously distributed in the BCC matrix. Fe4 and Fe6 HEAs show high strength and do not fracture even at a large compressive strain of 70%, exhibiting the best combination of strength and fracture strain among all the reported BCC HEAs with nanocrystals. The superior mechanical properties of Fe4 and Fe6 HEAs are attributed to the optimized microstructure. These findings promote the development of low-cost HEAs with superior mechanical properties. Published under an exclusive license by AIP Publishing.
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Joint Research Fund LiaoningShenyang National Laboratory for Materials Science ; Liaoning Revitalization Talents Program ; Chinese Academy of Sciences ; IMR Innovation Fund ; Youth Innovation Promotion Association CAS
DOI10.1063/5.0060678
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2018YFB0703402] ; National Natural Science Foundation of China[52171164] ; National Natural Science Foundation of China[51790484] ; National Natural Science Foundation of China[52074257] ; Joint Research Fund LiaoningShenyang National Laboratory for Materials Science[2019010248-JH3/301] ; Liaoning Revitalization Talents Program[XLYC1802078] ; Liaoning Revitalization Talents Program[XLYC1807062] ; Chinese Academy of Sciences[ZDBS-LY-JSC023] ; IMR Innovation Fund[2021-PY03] ; Youth Innovation Promotion Association CAS[2021188]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000754604800006
PublisherAIP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172543
Collection中国科学院金属研究所
Corresponding AuthorZhang, Long; Lu, Xing; Zhang, Hongwei
Affiliation1.Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shichangxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Ji, Yu,Zhang, Long,Lu, Xing,et al. Microstructural optimization of FexCrNiAl0.5Ti0.5 high entropy alloys toward high ductility[J]. APPLIED PHYSICS LETTERS,2021,119(14):7.
APA Ji, Yu.,Zhang, Long.,Lu, Xing.,Pang, Jingyu.,Lu, Yunzhuo.,...&Zhang, Haifeng.(2021).Microstructural optimization of FexCrNiAl0.5Ti0.5 high entropy alloys toward high ductility.APPLIED PHYSICS LETTERS,119(14),7.
MLA Ji, Yu,et al."Microstructural optimization of FexCrNiAl0.5Ti0.5 high entropy alloys toward high ductility".APPLIED PHYSICS LETTERS 119.14(2021):7.
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