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Unconventional Deformation Behaviours of Nanoscaled High-Entropy Alloys
Bu YQ; Peng SY(彭神佑); Wu SW; Wei YJ(魏宇杰); Wang G; Liu JB; Wang HT(王洪涛)
Source PublicationENTROPY
AbstractThe bulk high-entropy alloys (HEAs) exhibit similar deformation behaviours as traditional metals. These bulk behaviours are likely an averaging of the behaviours exhibited at the nanoscale. Herein, in situ atomic-scale observation of deformation behaviours in nanoscaled CoCrCuFeNi face-centred cubic (FCC) HEA was performed. The deformation behaviours of this nanoscaled FCC HEA (i.e., nanodisturbances and phase transformations) were distinct from those of nanoscaled traditional FCC metals and corresponding bulk HEA. First-principles calculations revealed an obvious fluctuation of the stacking fault energy and stability difference at the atomic scale in the HEA. The stability difference was highlighted only in the nanoscaled HEA and induced unconventional deformation behaviours. Our work suggests that the nanoscaled HEA may provide more chances to discover the long-expected essential distinction between the HEAs and traditional metals.
Keywordnanoscaled high-entropy alloys nanodisturbances phase transformations atomic-scale unstable
Indexed BySCI
WOS IDWOS:000448545700059
WOS Research AreaPhysics, Multidisciplinary
WOS SubjectPhysics
Funding OrganizationNational Natural Science Foundation of China [11572281, 11725210, 11672355] ; Fundamental Research Funds for the Central Universities [2018XZZX001-05] ; Zhejiang Provincial Science & Technology Program of China [2017C31076]
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
3.Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China
4.Zhejiang Univ, Inst Appl Mech, Hangzhou 310027, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Bu YQ,Peng SY,Wu SW,et al. Unconventional Deformation Behaviours of Nanoscaled High-Entropy Alloys[J]. ENTROPY,2018,20(10):Ar-778.
APA Bu YQ.,彭神佑.,Wu SW.,魏宇杰.,Wang G.,...&王洪涛.(2018).Unconventional Deformation Behaviours of Nanoscaled High-Entropy Alloys.ENTROPY,20(10),Ar-778.
MLA Bu YQ,et al."Unconventional Deformation Behaviours of Nanoscaled High-Entropy Alloys".ENTROPY 20.10(2018):Ar-778.
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