Nanocrystalline (AlTiVCr)N Multi-Component Nitride Thin Films with Superior Mechanical Performance

Feng, Chao; Feng, Xiaobin; Guan, Zailin; Song, Haiyang; Wang, Tianli; Liao, Wei-Bing; Lü, Yang; Zhang, Fuxiang

doi:10.3390/nano12152722

Cited by 7 publications

(3 citation statements)

References 40 publications

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“…The nanocrystalline structure can be considered an asset to improve the performances of the high-entropy films. For example, C. Feng et al [86] reported that the excellent mechanical properties of (AlTiVCr)N nitride result from synergistic effect of the nanocrystalline structure, covalent bonds formed between the metallic elements and nitrogen, and interstitial strengthening.…”

Section: Nanolattice and Nanostructuresmentioning

confidence: 99%

Review on mechanical and functional properties of refractory high-entropy alloy films by magnetron sputtering

El Garah,

Soubane,

Sanchette

2023

emergent mater.

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Refractory high-entropy films (RHEFs), as multi-component materials, have garnered significant attention due to their potential use in high-temperature applications. RHEFs are endowed with unique microstructural and functional properties due to the use of refractory elements. In this review, we examine the recent state of research on RHEFs deposited by the magnetron sputtering technique. The microstructure of RHEFs has been analyzed/explored and the mechanical properties as well as the main hardening mechanisms of these films are discussed. Furthermore, functional properties such as resistance to corrosion and wear, electrical and irradiation performances, and high-temperature oxidation were evaluated. RHEFs can meet market demand in the field of engineering materials. However, many challenges, such as low ductility at room temperature, remain to be overcome. This review provides an overview of the strengths and weaknesses of RHEFs produced using magnetron sputtering.

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Section: Nanolattice and Nanostructuresmentioning

confidence: 99%

Review on mechanical and functional properties of refractory high-entropy alloy films by magnetron sputtering

El Garah,

Soubane,

Sanchette

2023

emergent mater.

View full text Add to dashboard Cite

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“…High-entropy alloys (HEAs) and multiprincipal element alloys have received considerable interest for community experts and have become a worldwide hot spot since Cantor and Yeh reported their first publication [1,2]. Cr-containing HEAs have exhibited promising potential when applied in high-temperature industrial fields as a result of their remarkable strength [3][4][5][6], favorable ductility [7][8][9], distinguished corrosion resistance [10][11][12], superior wear and oxidation resistance [13][14][15], and acceptable thermal stability [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cr Content on Microstructure and Mechanical Properties of Co-Free FeCryNiAl0.8 High-Entropy Alloys

et al. 2023

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High-entropy alloys have gained widespread concern in response to the increased requirements for future high-temperature structural superalloys. By combining phase-diagram calculations with microhardness, compression behavior measurements at room temperature, and elevated temperature conditions, the very important role of the Cr element on the microstructure and properties is deeply revealed, which provides candidates materials for future high-temperature alloy applications. The increment of Cr favors the regulation of the two-phase fraction and distribution. The thermodynamic calculations illustrate that the density and melting point of the HEAs showed an increasing trend with the increase of the Cr content. The typical worm-like microstructure of the Cr0.6 alloy with a dual BCC structure was detected. Meanwhile, on the one hand, the increment of the Cr elements results in a considerable optimization of the mechanical properties of the alloy in terms of strength and ductility at room temperature. The corresponding compressive strength and plasticity of Cr0.6 alloy at room temperature are 3524 MPa and 43.3%. On the other hand, the high-temperature mechanical properties of the alloy are greatly enhanced. At 1000 °C, the yield strength of the Cr0.6 alloy is about 25 MPa higher than that of the Cr0.4 alloy. The superior mechanical properties are attributed to the pronounced work-hardening response, and the work-hardening behavior of Cr-containing HEAs was systematically analyzed by employing the modified Ludwik model. The higher content of Cr helps the resistance of the local deformation response, improving the nonuniform strain and promoting the balance of strength and ductility of the alloys.

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“…Cr, V and Mo elements were also incorporated into the coating, with the goal to improve the thermal stability [25], oxidation/corrosion resistance and solid lubricity of the coating [26,27]. This composition continues to build upon existing (AlCrTiV)N, which was reported to have excellent mechanical properties [28]. The goal of this study is to explore novel high entropy nitride coatings to achieve superior performance for application in adverse environments and to investigate the use of the cathodic arc evaporation technique as a method of producing HEN coatings.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties, Wear and Erosion Performance of a Novel High Entropy Nitride (AlCrTiMoV)N Coating Produced by Cathodic Arc Evaporation

2023

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(AlCrTiMoV)N high entropy nitride film was prepared on 17-4PH stainless steel substrate using cathodic arc evaporation (CAE). The composition, microstructure, and thermal stability were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Mechanical properties such as hardness and Young’s modulus and coating performance against wear and erosion were also evaluated. The results show that the (AlCrTiMoV)N coating assumes a single-phased solid solution B1 FCC structure. It has excellent thermal stability and retains its structure with no decomposition observed up to a temperature of 1000 °C. The hardness and elastic modulus are measured as 21.3 GPa and 304 GPa, respectively. The coating contains some metallic droplets. As a potential protective coating, the (AlCrTiMoV)N coating has a lower wear rate but a higher erosion rate when compared to the TiN baseline coating.

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Nanocrystalline (AlTiVCr)N Multi-Component Nitride Thin Films with Superior Mechanical Performance

Cited by 7 publications

References 40 publications

Review on mechanical and functional properties of refractory high-entropy alloy films by magnetron sputtering

Review on mechanical and functional properties of refractory high-entropy alloy films by magnetron sputtering

Effects of Cr Content on Microstructure and Mechanical Properties of Co-Free FeCryNiAl0.8 High-Entropy Alloys

Microstructure, Mechanical Properties, Wear and Erosion Performance of a Novel High Entropy Nitride (AlCrTiMoV)N Coating Produced by Cathodic Arc Evaporation

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