Solid-Solution CrCoCuFeNi High-Entropy Alloy Thin Films Synthesized by Sputter Deposition

An, Zhinan; Jia, Haoling; Wu, Yegang; Rack, Philip D.; Patchen, A. D.; Liu, Yuzi; Ren, Yang; Li, Nan; Liaw, Peter K.

doi:10.1080/21663831.2015.1048904

Cited by 138 publications

(69 citation statements)

References 42 publications

(44 reference statements)

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“…The columnar growth direction is perpendicular to the surface of substrate due to the sputtering process. This behavior is similar to other reports [29]. Additionally, the precipitates would enhance the hardness because of the dislocation by-pass and particle-shearing principle.…”

Section: Resultssupporting

confidence: 78%

Microstructure, Mechanical and Corrosion Behaviors of CoCrFeNiAl0.3 High Entropy Alloy (HEA) Films

et al. 2017

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Abstract:The HEA-CoCrFeNiAl 0.3 thin film in this study has been successfully developed by radio frequency (RF) magnetron sputtering to meet the increasing demand in engineering applications. Its microstructure and surface profile were investigated accordingly. The as-synthesized HEA film was found to have a homogeneous element distribution and ultra-smooth surface, exhibiting a typical face-centered cubic (FCC) solid solution. The film showed better mechanical properties than its bulk counterpart, with a Young's modulus and hardness of~201.4 GPa and~11.5 GPa, respectively. Furthermore, corrosion tests demonstrated decreased sensitivity to localized corrosion in comparison to the commercial 304 stainless steel in NaCl solution.

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Section: Resultssupporting

confidence: 78%

Microstructure, Mechanical and Corrosion Behaviors of CoCrFeNiAl0.3 High Entropy Alloy (HEA) Films

et al. 2017

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“…[21][22][23][24][25] HEAs characteristic feature of entropy maximization to achieve phase stabilization allows them to obtain unique microstructures and exhibit promising properties. [26][27][28] CoCrFeNiAl 0.3 HEA fiber fabricated by Li et al exhibited an outstanding combination of strength and ductility, providing an innovative way to fabricate high performance engineering materials.…”

Section: Introductionmentioning

confidence: 99%

High‐Entropy Alloy (HEA)‐Coated Nanolattice Structures and Their Mechanical Properties

et al. 2017

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Nanolattice structure fabricated by two-photon lithography (TPL) is a coupling of size-dependent mechanical properties at micro/nano-scale with structural geometry responses in wide applications of scalable micro/nano-manufacturing. In this work, three-dimensional (3D) polymeric nanolattices are initially fabricated using TPL, then conformably coated with an 80 nm thick high-entropy alloy (HEA) thin film (CoCrFeNiAl 0.3 ) via physical vapor deposition (PVD). 3D atomic-probe tomography (APT) reveals the homogeneous element distribution in the synthesized HEA film deposited on the substrate. Mechanical properties of the obtained composite architectures are investigated via in situ scanning electron microscope (SEM) compression test, as well as finite element method (FEM) at the relevant length scales. The presented HEA-coated nanolattice encouragingly not only exhibits superior compressive specific strength of %0.032 MPa kg À1 m 3 with density well below 1000 kg m À3 , but also shows good compression ductility due to its composite nature. This concept of combining HEA with polymer lattice structures demonstrates the potential of fabricating novel architected metamaterials with tunable mechanical properties.

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“…However, as shown later in this work, quenching usually has limitations. Other non-equilibrium processes such as magnetron sputtering [20,[27][28][29] and melt spinning [20,30,31] cannot produce bulk samples, while mechanical alloying (MA) [32,33] has contamination from processing and porosity after consolidation.…”

Section: Introductionmentioning

confidence: 99%

Atomic-scale homogenization in an fcc-based high-entropy alloy via severe plastic deformation

Yuan

Tsai

Sha

et al. 2016

Journal of Alloys and Compounds

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Solid-Solution CrCoCuFeNi High-Entropy Alloy Thin Films Synthesized by Sputter Deposition

Cited by 138 publications

References 42 publications

Microstructure, Mechanical and Corrosion Behaviors of CoCrFeNiAl0.3 High Entropy Alloy (HEA) Films

Microstructure, Mechanical and Corrosion Behaviors of CoCrFeNiAl0.3 High Entropy Alloy (HEA) Films

High‐Entropy Alloy (HEA)‐Coated Nanolattice Structures and Their Mechanical Properties

Atomic-scale homogenization in an fcc-based high-entropy alloy via severe plastic deformation

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