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Microstructure and tensile properties of Co-free Fe4CrNi(AlTi)(x) high-entropy alloys
Ji, Yu1,2; Zhang, Long2; Lu, Xing1; Fu, Huameng2; Zhu, Zhengwang2; Li, Hong2; Zhang, Hongwei2; Zhang, Haifeng2
Corresponding AuthorZhang, Long(zhanglong@imr.ac.cn) ; Lu, Xing(lu@djtu.edu.cn) ; Zhang, Hongwei(hongweizhang@imr.ac.cn)
2021-11-01
Source PublicationINTERMETALLICS
ISSN0966-9795
Volume138Pages:8
AbstractAccording to parameters of atomic size difference (delta), valence electron concentration (VEC) and the cost effectiveness, a series of high Fe-content and Co-free Fe4CrNi(AlTi)(x) (x = 0.2, 0.6 and 1.0) high-entropy alloys (HEAs) were designed. Effects of the content of Al and Ti on the microstructure and tensile properties were investigated. It is found that the constituent phases change from the single face-centered cubic (FCC) phase to FCC + body-centered cubic (BCC) + L2(1) phases and BCC + L2(1) phases as the Al and Ti content increases from 0.2 to 0.6 and 1.0, respectively. With increasing the Al and Ti content, the strength increases but the tensile plasticity decreases. Specifically, Fe4CrNi(AlTi)(0.6) exhibits a good combination of a high strength of 858 MPa and a large tensile plasticity of 12.8%. The excellent tensile properties of this alloy are attributed to the synergetic effects of a soft FCC phase and hard BCC/L2(1) phases, and moreover, the uniform distribution of high-density L2(1) nanoparticles in the BCC phase also benefits the tensile properties. In addition, the phase-evolution principles in the current HEAs and in many previously-reported HEAs are well discussed within the framework of delta and VEC parameters. These findings are believed to promote the development of low-cost HEAs with high performance for practical applications.
KeywordHigh-entropy alloys Microstructure Tensile properties Phase-evolution L2(1) nanoprecipitates
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science ; Liaoning Revitalization Talents Program ; Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS
DOI10.1016/j.intermet.2021.107339
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2018YFB0703402] ; National Natural Science Foundation of China[51701213] ; National Natural Science Foundation of China[51790484] ; National Natural Science Foundation of China[52074257] ; Joint Research Fund Liaoning-Shenyang 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] ; Youth Innovation Promotion Association CAS[2021188]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000696575600004
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166970
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, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Ji, Yu,Zhang, Long,Lu, Xing,et al. Microstructure and tensile properties of Co-free Fe4CrNi(AlTi)(x) high-entropy alloys[J]. INTERMETALLICS,2021,138:8.
APA Ji, Yu.,Zhang, Long.,Lu, Xing.,Fu, Huameng.,Zhu, Zhengwang.,...&Zhang, Haifeng.(2021).Microstructure and tensile properties of Co-free Fe4CrNi(AlTi)(x) high-entropy alloys.INTERMETALLICS,138,8.
MLA Ji, Yu,et al."Microstructure and tensile properties of Co-free Fe4CrNi(AlTi)(x) high-entropy alloys".INTERMETALLICS 138(2021):8.
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