Effect of Bias Voltage on Microstructure and Mechanical Properties of Nanocomposite ZrCN Films Deposited by Filtered Cathodic Vacuum Arc

A series of refractory high-entropy alloys VTaTiMoAlx with x=0,0.2,0.6,1.0 were designed and produced by vacuum arc melting. The effect of added Al elements on the microstructure and mechanical properties of refractory high-entropy alloys were investigated. The X-ray diffraction results showed that all the high-entropy alloys consist of simple BCC solid solution. SEM indicated that the microstructure of VTaTiMoAlx changes from equiaxial dendritic-like structure to typical dendrite structure with the addition of Al element. The composition of different regions in the alloys are obtained by energy dispersive spectroscopy and shows that Ta, Mo elements are enriched in the dendrite areas, and Al, Ti, V are enriched in inter-dendrite areas. The yield strength and compress strain reach maximum (σ0.2=1221MPa, ε=9.91%) at x=0, and decrease with the addition of Al element at room temperature. Vickers hardness of the alloys improves as the Al addition.

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Effect of substrate bias voltage on the composition, microstructure and mechanical properties of W-B-C coatings

Applied Surface Science ◽

10.1016/j.apsusc.2020.146966 ◽

2020 ◽

Vol 528 ◽

pp. 146966

Author(s):

S. Mirzaei ◽

M. Alishahi ◽

P. Souček ◽

V. Buršíková ◽

L. Zábranský ◽

...

Keyword(s):

Mechanical Properties ◽

Bias Voltage ◽

Substrate Bias ◽

Substrate Bias Voltage ◽

Microstructure And Mechanical Properties

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Effect of Bias Voltage on Microstructure and Mechanical Properties of Nanocrystalline TiN Films Deposited by Reactive Magnetron Sputtering

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2011.3361 ◽

2011 ◽

Vol 11 (2) ◽

pp. 1758-1761 ◽

Cited By ~ 1

Author(s):

Sung-Yong Chun

Keyword(s):

Mechanical Properties ◽

Magnetron Sputtering ◽

Bias Voltage ◽

Reactive Magnetron Sputtering ◽

Reactive Magnetron ◽

Tin Films ◽

Microstructure And Mechanical Properties

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Effect of Mo Addition on The Microstructure and Mechanical Properties of CoCuFeNi High Entropy Alloy

Metals ◽

10.3390/met10081017 ◽

2020 ◽

Vol 10 (8) ◽

pp. 1017

Author(s):

Yang Shao ◽

Huan Ma ◽

Yibing Wang

Keyword(s):

Mechanical Properties ◽

Solution Structure ◽

Tensile Tests ◽

Atomic Ratio ◽

Vacuum Arc ◽

High Entropy Alloy ◽

High Entropy Alloys ◽

High Entropy ◽

Microstructure And Mechanical Properties ◽

Mo Content

In order to reveal the effect of Mo addition on the microstructure and mechanical properties, (CoCuFeNi)100-xMox (x = 0, 10, 15, 19, and 25, x values in atomic ratio) high entropy alloys were prepared by vacuum arc-melting. The results showed that with Mo addition, the μ phase formed and serious separation occurred in the high entropy alloys. The content of μ phase increased with the increase in Mo content. The microstructure of the alloys changed from an initial single-phase face-center-cubic (FCC) solid solution structure (x = 0) to a hypoeutectic microstructure (x = 15), then to a full eutectic microstructure (x = 19), and finally to a hypereutectic microstructure (x = 25). Coherent interface between μ phase and FCC phase was observed. The (CoCuFeNi)81Mo19 alloy with fully eutectic microstructures exhibited the highest yield strength of 557 MPa and fracture strength of 767 MPa in tensile tests at room temperature. The fracture surface revealed that the formation of great amounts of the μ phase resulted in the loss of ductility of (CoCuFeNi)100-xMox alloys.

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The effect of substrate bias on the characteristics of CrN coatings deposited by DC-superimposed HiPIMS system

International Journal of Modern Physics B ◽

10.1142/s0217979217440325 ◽

2017 ◽

Vol 31 (16-19) ◽

pp. 1744032 ◽

Cited By ~ 3

Author(s):

X. Zuo ◽

F. Xia ◽

D. Zhang ◽

P. L. Ke ◽

Q. M. Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Bias Voltage ◽

Indentation Test ◽

Grain Structure ◽

Substrate Bias ◽

Cross Sectional ◽

Microstructure And Mechanical Properties ◽

Columnar Grain ◽

Influence Of Substrate ◽

Crn Coatings

Chromium nitride coatings were prepared by reactive DC-superimposed high-power-impulse magnetron sputtering (HiPIMS) system. The influence of substrate bias on the microstructure and mechanical properties of CrN coatings was investigated. XRD and cross-sectional SEM were utilized to characterize the film structures. Mechanical properties were characterized by nanoindentation and Vickers indentation test. The results revealed that the microstructure and mechanical properties of CrN coatings were affected by bias voltage. The CrN coatings exhibited dense and fine columnar grain structure with the hardness of about 18.7 GPa. The fracture toughness of CrN coatings was around 3.16 MPa ⋅ m[Formula: see text]. However, further increase of the bias voltage from −250 V to −300 V led to the degradation of coating properties.

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