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1161
The effect of Laser Shock Peening on Fatigue Life Using Pure Water and Hydrofluoric Acid As a Confining Layer of Al – Alloy 7075-T6
Published 2018-01-01“…Fatigue life by means of laser peened workpieces was improved to 154.3%, 9.78%, respectively, for Hydrofluoric (HF) and pure water compared to un-peened specimens. And the outcomes of Vickers hardness test for laser shock peening with acid and pure water as well as un-peened specimens were 165.2HV30, 143.95HV30 and 134.7HV30, respectively showed a significant improvement in the hardness property.…”
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1162
Tribological behavior of electroless Ni-B-Mo coatings under dry and lubricated conditions and corrosion resistance in 3.5% NaCl solution
Published 2018-09-01“…Heat treatment results in crystallization of the coatings. Vicker’s micro-indentation tests indicate the coatings have high thermal stability. …”
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1163
Experimental Investigations on Erosion-Corrosion Characteristics of HVOF-Sprayed WC-10% Ni Coatings Deposited on Aluminum Alloy
Published 2023-01-01“…The microstructure and hardness of thermally sprayed coatings were examined using a scanning electron microscope (SEM) and a Vickers hardness tester. The slurry erosion-corrosion wear tests were carried out by varying the parameters of the slurry erosion process, such as testing time, slurry content, slurry speed, and impinging particle size, on the erosion testing equipment. …”
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1164
Impact and indenting damage of CVD-produced ZnS and ZnSe ceramics
Published 2020-01-01“…Time series of acoustic emission pulses were excited in ductile ZnS and ZnSe ceramics either by a falling weight or by indenting the Vickers pyramid. Energy distributions in emitted acoustical emission pulses were found to be random (Poisson-like) in the events of short (0.3–0.5 ms) impact forcing. …”
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1165
Study of microstructure geometry and properties of laser beam welded joints made of S960QL structural steel and S304 corrosion-resistant steel
Published 2021-03-01“…Static tensile test and bend test were also performed as well as a hardness Vickers test under a load of 100N. Good quality joints were obtained, characterized by a small number of welding imperfections, small size of the weld and heat affected zone, as well as satisfactory mechanical properties.…”
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1166
Effective Case Depth and Wear Resistance of Pack Carburized SCM 420 Steel Processed Using Different Concentrations of Natural Shell Waste Powders and Carburizing Duration
Published 2022-02-01“…The effective case depth was measured from the microhardness profile obtained using a Vickers hardness testing machine. A CSP–DCSP ratio of 60%:40% and carburization time of 12 h were found to increase the effective case depth of SCM 420 quenched specimens to 2340 µm. …”
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1167
Mechanical Properties Enhancement of Conventional Glass Ionomer Cement by Adding Zirconium Oxide Micro and Nanoparticles
Published 2019-01-01“…Compressive strength (CS), biaxial flexural strength (BFS), Vickers Microhardness (VH) and wear rate losses (WR) were investigated. …”
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1168
Microstructure and Micro-Hardness Properties of In-Situ LENS Fabricated Ti-Al-Si-xV Alloys
Published 2022-01-01“…The micro-hardness properties were evaluated with the Vickers hardness tester. The results showed that alloying via in-situ powder deposition followed by heat treatment is practicable for the producing TiAl-based alloys with improved mechanical properties.…”
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1169
Evaluation the Mechanical Properties of Shot Peened TIG Welded Aluminum Sheets
Published 2017-03-01“…All peened and unpeened, and welded and unwelded samples were characterized by metallographic test to indicate the phase transformation and modification in microstructure occurring during welding process. Tensile test and Vickers micro-hardness measurements were performed for all samples to investigate the effect of shoot peening on mechanical properties of welded aluminum. …”
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1170
Bimodal Microstructure Obtained by Rapid Solidification to Improve the Mechanical and Corrosion Properties of Aluminum Alloys at Elevated Temperature
Published 2021-01-01“…The samples were systematically studied using light microscopy, scanning electron, and transmission microscopy with electron diffraction spectrometry for the micro-chemical analyses. Tensile tests and Vickers microhardness were applied for mechanical analyses, and corrosion tests were performed in a comparison with the standard alloy. …”
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1171
Production and study of the stability of the ceramic compound Sr2NiZrO6 in crude petroleum for use as encapsulation for temperature sensors in the petroleum industry
Published 2023-12-01“…The sintered Sr2NiZrO6 compound was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, and Vickers microhardness. The chemical stability of the compound was verified through the structural, microstructural, and mechanical characterization of the specimens after 60 days of immersion in crude oil. …”
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1172
Impact of ECAP on wear performance of Al–Mn magnesium alloy
Published 2020-01-01“…The samples were processed through equal channel angular pressing were subjected to microstructural, wear studies and are characterized by optical and scanning electron microscopy. Vickers microhardness was carried out to evaluate the relation between the wear behavior of homogenized and ECAP processed samples. …”
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1173
Strength Improvement of Nano-Structured Titanium Processed by Parallel Tubular Channel Angular Pressing
Published 2023-03-01“…It was also showed that the Vickers microhardness increased by 46%. Moreover, the micrographs illustrated that the average grain size decreased from ∼21 μm in the unprocessed condition to ∼143 nm after applying two PTCAP passes. …”
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1174
Microstructural Changes and Mechanical Properties of Precipitation-Strengthened Medium-Entropy Fe<sub>71.25</sub>(CoCrMnNi)<sub>23.75</sub>Cu<sub>3</sub>Al<sub>2</sub> Maraging All...
Published 2023-05-01“…After a subsequent annealing process at 450 °C for varying durations (1, 3, 5, and 7 h), nanosized precipitates (B2 intermetallic) enriched with Cu and with a diameter of approximately 5 nm formed, significantly increasing the hardness of the alloy. The highest Vickers microhardness of 597 HV, along with compressive yield strength and ultimate compressive strength of 2079 MPa and 2843 MPa, respectively, was achieved for the Aged_7h sample. …”
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1175
Early Detection and Identification of Fatigue Damage in Thrust Ball Bearings by an Acoustic Emission Technique
Published 2020-03-01“…Features of AE signals detected when a defect was artificially formed on the raceway surface of a bearing by using a Vickers hardness tester were also examined. The AE technique detected initial cracks due to fatigue damage earlier than the vibration technique. …”
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1176
Microstructure, mechanical properties, and corrosion resistance of an explosively welded Mg–Al composite
Published 2022-04-01“…The mechanical properties were determined using micro-Vickers hardness, tensile, and Charpy impact tests. …”
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1177
THE EFFECT OF THE APPLICATION OF 20% CARBAMIDE PEROXIDE ON THE GLASS IONOMER CEMENT TYPE II SURFACE HARDNESS
Published 2015-06-01“…Glass ionomer cement surface hardness was measured by Vickers Microhardness Tester series HMV-2 with a weight of 0,025 Hv for 20 seconds. …”
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1178
Evolution of the Microstructure and Phase Composition of the Products Formed in the Reaction between Iridium and W<sub>2</sub>B
Published 2022-10-01“…The well-known and unknown ternary W–Ir–B phases were detected. The Vickers microhardness value for the new ternary W<sub>2</sub>Ir<sub>5</sub>B<sub>2</sub> boride was measured. …”
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1179
Parallel Tubular Channel Angular Pressing (PTCAP) Processing of the Cu-20.7Zn-2Al Tube
Published 2022-02-01“…The annealed tubes’ tensile strength and Vickers hardness increased by 237.65% and 175.6%, respectively, after two passes. …”
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1180
Metal Artefacts and Remains of Armour from Kozlov Rob Castle: Metallurgical Analyses as a Tool for Identification and Interpretation of Fragmentary Archaeological Finds
Published 2023-06-01“…Additionally, samples were taken for microhardness Vickers measurements and metallographic analysis with a light microscope and a scanning electron microscope. …”
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