Reproducibility of the single-phase structural state of the multielement high-entropy Ti-V-Zr-Nb-Hf system and related superhard nitrides formed by the vacuum-arc method

Sоbоl, O. V.; Андреев, А. А.; Gorban, V. F.; Krapivka, N. A.; Stolbovoi, V. A.; Serdyuk, I. V.; Фильчиков, В. Е.

doi:10.1134/s1063785012070127

Cited by 72 publications

(23 citation statements)

References 6 publications

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“…It is seen that the respective values differ substantially. Such a difference causes strong lattice distortions and thereby influences the stress-strain state of the nitride HEAs, as was shown in [4,8,26]. In addition, Table 2 gives the values of the enthalpy and entropy of forma tion of the binary nitrides [27].…”

Section: Resultsmentioning

confidence: 99%

Influence of residual pressure and ion implantation on the structure, elemental composition, and properties of (TiZrAlYNb)N nitrides

et al. 2015

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Abstract-The nitrides of high entropy alloys, (TiZrAlYNb)N, fabricated by cathodic vacuum arc evapora tion are studied with electron microscopy, atomic force microscopy, laser scanning microscopy; energy dis persive X ray analysis, X ray phase analysis, time of flight secondary ion mass spectrometry; and hardness measurements. It is found that the deposition parameters influence the structure, surface morphology, ele ment distribution, and mechanical properties. The structural-phase state of the coatings before and after the ion implantation of heavy negative gold ions Au -are compared.

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Section: Resultsmentioning

confidence: 99%

Influence of residual pressure and ion implantation on the structure, elemental composition, and properties of (TiZrAlYNb)N nitrides

et al. 2015

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“…We also employed the diffraction of X-rays using a grazing incidence beam, in Cr emission, at angle 3 ∘ . In order to study the stress-strain state of the coatings, we employed the method of X-ray strain measurements (" -sin 2 " method) and its modifications, which are commonly applied to the coatings with strong axial texture [10][11][12][13][14].…”

Section: Methodsmentioning

confidence: 99%

“…Due to the low grain size (≤10 nm) and the great importance of the boundary zones (a surface boundary in particular) surrounding individual grains and nanograin joints, behavior and properties of nanocomposites crucially differ from conventional materials with the grain sizes of more than 100 nm [1][2][3][4][5][6][7]. Therefore, fabrication of new combinations of nanocomposite materials (nanostructured coatings) based on (Ti-Zr-Hf-V-Nb)N using cathodic vacuum-arc deposition and studies of their physical and mechanical properties turns to be a very promising trend of modern material science [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. On the other hand, the theory of multicomponent high entropy alloys, which demonstrated improved thermal stability, was already proposed and demonstrated experimentally [5-7, 14, 20-23].…”

Section: Introductionmentioning

confidence: 99%

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Structure and Properties of Nanostructured (Ti‐Hf‐Zr‐V‐Nb)N Coatings

Pogrebnjak

2013

Journal of Nanomaterials

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Nanostructured coatings of (Ti-Zr-Hf-V-Nb)N were obtained by the Cathodic Arc Vapor Deposition (CAVD) method. To investigate these coatings, a number of complementary methods of elemental and structural analysis were used, namely, slow positron beam (SPB), proton microbeam (μ-PIXE), micro- and nanoelectron beam (EDS and SEM analyses), and X-ray diffraction method (XRD), including method of “α-sin2φ” measurement of a stress-strain state (X-ray strain measurement). Additionally, the texture of coatings before and after annealing up to 873 K (for time of annealingτ=30 min) was also investigated. It was shown that increasing of stress-strain state in the coating during deposition increases the resistance to oxidation at high temperatures of annealing. It was also found that the redistribution of elements and defects, as well as their alignment (segregation), appeared due to thermally stimulated diffusion. It is also connected with the process of spinodal segregation near grain boundaries and interfaces around the grains and subgrains.

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“…Akira TAKEUCHI ideally the cases without specific structures due to the presence of complete solid solutions 41) . Table 2 provides examples of the above mentioned strategy for HEAs 25,28,38,[41][42][43][44][45] , indicating that the ScYLaTiZrHf 38) and NbTaTiZrHf 42) equi-atomic alloys do not possess any 1:1 compounds in the constituent binary systems. This leads to the crystallographic structure of the alloy affected by that from the pure elements.…”

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Recent Progress in Alloy Designs for High-Entropy Crystalline and Glassy Alloys

Takeuchi

2016

J. Jpn. Soc. Powder Powder Metallurgy

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This paper provides general overviews for the recent progress in alloy designs for high-entropy crystalline and glassy alloys in the following aspects. First, the alloy designs for bulk metallic glasses (BMGs) are briefly reviewed by focusing on atomic size differences, mixing enthalpy and valence electron concentration as well, followed by their extension to the other related alloys including high-entropy alloys (HEAs). Then, the historic backgrounds of the high-entropy bulk metallic glasses (HE-BMGs) are dealt with by pointing out the features of the HE-BMGs. Subsequently, the recently-developed HEAs with hcp structure, which are the new ones to the conventional HEAs with bcc, fcc and their mixture structures, are discussed for their future development. Finally, recent alloy designs utilizing crystallographic data acquired from Pettifor map, Pearson's Crystal Data and binary phase diagrams are discussed in order to use them for the development of new alloys in near future.

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Reproducibility of the single-phase structural state of the multielement high-entropy Ti-V-Zr-Nb-Hf system and related superhard nitrides formed by the vacuum-arc method

Cited by 72 publications

References 6 publications

Influence of residual pressure and ion implantation on the structure, elemental composition, and properties of (TiZrAlYNb)N nitrides

Influence of residual pressure and ion implantation on the structure, elemental composition, and properties of (TiZrAlYNb)N nitrides

Structure and Properties of Nanostructured (Ti‐Hf‐Zr‐V‐Nb)N Coatings

Recent Progress in Alloy Designs for High-Entropy Crystalline and Glassy Alloys

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