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1761
Study the effect of Welding Current on the microstructure and strength of dissimilar weld joint AISI 303/AISI 1008
Published 2021-03-01“…The optical microscope V83MC50 was used to show microstructure properties while both the micro-Vickers Hardness and tensile test were adopted to evaluate the mechanical properties. …”
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1762
Surface Integrity of Dimethacrylate Composite Resins with Low Shrinkage Comonomers
Published 2021-03-01“….% of the resin matrix. A Vickers indenter and glossmeter were used for testing surface hardness (SH) and gloss (SG) at 60°. …”
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1763
Effect of Stress-Relieving Heat Treatment on the High Strain Rate Dynamic Compressive Properties of Additively Manufactured Ti6Al4V (ELI)
Published 2020-05-01“…Microstructural analyses were performed to study the failure mechanisms of the deformed specimens and fracture surfaces. Vickers microhardness test values were obtained before and after high strain rate compression testing. …”
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1764
Destruction of mesoscopic chemically modulated domains in single phase high entropy alloy via plastic deformation
Published 2022-10-01“…The mesoscopic domains are deformed and shrieked, and finally destructed by plastic deformation, which is supported by the comprehensive observations/measurements, such as electrical resistivity, Vickers hardness, electron backscattering diffraction, and hard X-ray photoemission spectroscopy. …”
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1765
Numerical Simulation of Wire Rod Cooling in Eutectoid Steel under Forced-Convection
Published 2021-01-01“…The model results were compared and validated with the experimental histories, obtaining a good agreement between both responses, while the microstructural evolution of the pearlite was validated using Scanning Electron Microscopy (SEM) and Vickers microhardness. It was found that specimen diameter and air velocity are the main variables to modify the undercooling and therefore the pearlite interlamellar spacing.…”
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1766
Preparation and Evaluation of Cu-Zn-GNSs Nanocomposite Manufactured by Powder Metallurgy
Published 2021-11-01“….% Zn had a more homogeneous microstructure, low porosity, higher Vickers hardness, and compression strength, while the composite contained 15 wt.% Zn recorded the lowest wear rate. …”
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1767
The Effects of Three Remineralizing Agents on the Microhardness and Chemical Composition of Demineralized Enamel
Published 2021-10-01“…Analysis of the microhardness of the specimens’ enamel surfaces was carried out via the Vickers method, and by scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). …”
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1768
Effect of vegetable oil quenchants on the properties of aluminum during solution heat treatment
Published 2015-06-01“…Tensile strength and hardness tests were carried out using an Instron Universal Tester and Vickers hardness methods, respectively. The results showed that palm kernel oil cools faster at 200 °C and 250 °C, while palm oil and shea butter oil quench faster at 300 °C and 350 °C, respectively. …”
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1769
Microstructure, thermo-physical and mechanical properties of hypereutectic Al–10Ni-xSi alloys
Published 2024-03-01“…The alloy with 15 wt% Si exhibits the TC of 162 ± 3 W/(m·K) at 25 °C, CTE of 14.3 ± 0.1 × 10−6/K (@25–100 °C), UTS of 205 ± 5 MPa, EI of 3.9 ± 0.1% and Vickers hardness of 186 ± 4 HV. We successfully obtained an as-cast Al alloy with excellent thermo-physical and favorable mechanical properties, potentially for thermal management materials.…”
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1770
Evaluation of Microhardness and Microleakage of CEM Cement after Adding Water to Semi Setting Cement
Published 2023-10-01“…The microhardness of the samples was measured with Vickers device after mounting in acrylic resin. Statistical analysis was performed using SPSS19 software and Mann-Whitney Kruskal-Wallis and one-way ANOVA tests. …”
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1771
Effects of Thermal Fatigue on Laser Modified H13 Die Steel
Published 2014-06-01“…The metallographic study was conducted using an optical microscope for laser modified layer thickness and grain size and the hardness properties were measured using a Vickers indenter. Erosion occurred from the sample after 3500 cycles. …”
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1772
The effect of nanobased irrigants on the root canal dentin microhardness: an ex-vivo study
Published 2023-08-01“…They were randomly allocated to 5 groups (n = 16) and irrigated with ZnONPs, AgNPs, Im-AgNPs, NaOCl, or normal saline (as the negative control) for 15 min. The Vickers Hardness Number (VHN) was measured on each root canal third before and after being soaked in irrigants. …”
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1773
In vitro evaluation of the microhardness and porosity of two photopolymerizable composite resins
Published 2020-06-01“…Methods: Ten test bodies were developed per sample (n= 10) and subjected to Vickers microhardness and porosity testing by computerized microtomography. …”
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1774
The Effect of Two Different Light-Curing Units and Curing Times on Bulk-Fill Restorative Materials
Published 2022-05-01“…SMH was evaluated using a Vickers hardness tester, CS was tested using a universal testing machine, and VS was measured using video imaging. …”
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1775
Continuous SiC Skeleton-Reinforced Reaction-Bonded Boron Carbide Composites with High Flexural Strength
Published 2023-07-01“…Using PEI-dispersed CB powders as additional carbon source, the composites’ flexural strength, fracture toughness, and Vickers hardness reach up to 470 MPa, 4.6 MPa·m<sup>1/2</sup>, and 22 GPa, which were increased by 44%, 15%, and 10%, respectively. …”
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1776
Exploring the Effect of Cetylpyridinium Chloride Addition on the Antibacterial Activity and Surface Hardness of Resin-Based Dental Composites
Published 2024-02-01“…A total of two hundred and seventy (<i>n</i> = 270) specimens from Filtek Z250 Universal and Filtek Z350 XT flowable RBDCs were fabricated with the addition of CPC at 2 %wt and 4 %wt concentrations to assess their antibacterial activity using the agar diffusion test and direct contact inhibition test, and their surface hardness using the Vickers microhardness test after 1 day, 30 days, and 90 days of aging. …”
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1777
Influence of Heat Treatment Parameters on the Microstructure of 17-4 PH Single Tracks Fabricated by Direct Energy Deposition
Published 2024-01-01“…Optical microscopy, X-ray diffractometry, and transmission electron microscopy were used to investigate the microstructure evolution induced by the PFHTs. Moreover, Vickers microhardness measurements were performed to evaluate the increase in mechanical strength. …”
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1778
In vitro effects of erosive challenge on the surface properties of sealants
Published 2016-09-01“…Aim: To assess in vitro the surface roughness (Ra), Vickers hardness (VHN) and surface morphology of resin and glass ionomer materials used for sealants after dynamic erosive challenge. …”
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1779
Effects of Solid-Solution Carbon and Eutectic Carbides in AISI 316L Steel-Based Tungsten Carbide Composites on Plasma Carburizing and Nitriding
Published 2023-07-01“…Both the single carburizing and continuous processes are effective in improving the Vickers surface hardness and corrosion resistance of the composite layers despite containing the solid-solution carbon and eutectic carbides.…”
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1780
The In-Situ Mechanical Properties of Carbon Fiber/Epoxy Composite under the Electric-Current Loading
Published 2022-10-01“…Such results could be explained that the higher current loading, the larger Joule heat, led to the higher operating temperature of the composite samples and the evolution of their mechanical properties accordingly. Vickers hardness tests indicated that the micro-hardness of the composite decreased with the increase of the operating temperature, which coincided with the evolution of its flexural properties with the electric-current loading. …”
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