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1461
Microindentation Hardness of Protein Crystals under Controlled Relative Humidity
Published 2017-11-01“…Vickers microindentation hardness of protein crystals was investigated on the (110) habit plane of tetragonal hen egg-white lysozyme crystals containing intracrystalline water at controlled relative humidity. …”
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Article -
1462
The Effect of Laser Power on the Properties of M<sub>3</sub>B<sub>2</sub>-Type Boride-Based Cermet Coatings Prepared by Laser Cladding Synthesis
Published 2020-04-01“…However, the micro-hardness of the coatings decreased as the power increased, and the maximum micro-hardness value was 1166.3 HV (Vickers Hardness). The results of the corrosion and frictional experiments showed that the best performance was obtained at a laser power of 2500 W, followed by 2800 and 2200 W.…”
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Article -
1463
First-principles calculations to investigate structural, elastic, electronic and thermodynamic properties of NbCoSn and VRhSn Half-Heusler compounds
Published 2022-12-01“…NbCoSn is harder than VRhSn HH because it has a higher Vicker’s hardness and shear modulus. Both compounds feature band gaps, indicating that they are semiconductors. …”
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Article -
1464
Microstructural changes and their influence on corrosion post-annealing treatment of copper and AISI 5140 steel in 3.5 wt% NaCl medium
Published 2023-12-01“…The samples were subjected to Vicker’s microhardness testing, and a decrease in the hardness was achieved post-annealing. …”
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Article -
1465
Influence of MnZn Ferrite Homogeneous Fibers on the Microstructure, Magnetic, and Mechanical Properties of MnZn Ferrite Materials
Published 2022-12-01“…In addition, the homogeneous-fiber-reinforced MnZn ferrite materials possessed superior magnetic and mechanical properties such as higher effective permeability, lower magnetic loss, and higher Vickers hardness compared to ordinary MnZn ferrite materials. …”
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Article -
1466
Investigate the Metallurgical, Degradation Behavior, and Mechanical Characteristics of a Novel Magnesium Alloy
Published 2023-10-01“…Also, hardness was measured using Vickers microhardness, in which the improvement rate was 75%, and a compression test to determine the mechanical properties of the prepared alloy found that the modulus of elasticity was 42GPa.To study its corrosive behavior inside the human body, a test was conducted on corrosion by the Tafel method to measure corrosion resistance in simulated blood plasma solution, Where the value of the corrosion rate of the alloy after the heat treatment became 0.089mm/y and Rp equal 4.13KΩ/cm2, These results made the new magnesium alloy a good candidate for use in temporary medical applications.…”
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Article -
1467
Microstructure and Material Properties of Ti-15mass%Nb Alloy after Gas Nitriding and Quenching Process
Published 2020-12-01“…This study fabricated a martensite structure inside the nitriding layer by quenching, after gas nitriding at 1023 and 1223 K. Vickers hardness test, X-ray diffraction, scanning electron microscopy (SEM), and SEM-energy dispersive X-ray (SEM-EDX) measurements from the surface to the inside were made after the heat treatment process. …”
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Article -
1468
Different characterization of soft substructures in quantale modules dependent on soft relations and their approximations
Published 2023-03-01“…The quantale module introduced by Abramsky and Vickers, engaged a large number of researchers. This research article focuses the combined behavior of rough set, soft set and an algebraic structure quantale module with the left action. …”
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Article -
1469
A study on the causes of the inconsistencies of the microstructure of welded joints of steel wire cord
Published 2019-08-01“…Relevance: the increase in the number of destruction of welded joints of the metal wire cord due to discrepancies in the microstructure of the welded seam.Purpose: to find the roots of defects in welded joints of metal wire cord to reduce the number of inconsistencies in this parameter and study the features of the formation of the microstructure of welded joints.Methods of research: as a material for research the metal wire cord of various designs made in steel – wire shop No. 2 of OJSC «BSW – Management Company of Holding «BMC» – a rod of own production was applied; the study was conducted using a Nikon SMZ 1000 stereoscopic microscope with a video system and an inverted metallographic microscope OLIMPUS GX-51 with a video system; measurement of hardness was carried out according to Vickers with a load of 0.5 kg on a hardness testing ZWICK 3Х5624АТ.Research results: the regularities and causes of the formation of mismatch of the microstructure of welded joints during welding on metal: incorrect setting of the welding machine (slowing down of the welding carriage); mismatch of the tempering temperature (a faulty button or operation home run twice); a small dwell time in the terminals (jaws) for tempering; inadequate execution of Regulation of the welded connection of the operator’s actions (pass or failure of the operation «tempering of the weld»); influence of external environmental factors (microclimate) of the operator’s workplace.…”
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Article -
1470
An in situ synchrotron X-ray study of reverse austenitic transformation in a metastable FeMnCo alloy
Published 2022“…Although exponential attenuation is observed in both stacking fault probability and dislocation density upon the initiation of the transformation, the resulting microstructure (single-phase face-centered cubic structure) remains highly defected, exhibiting high Vickers hardness, but still preserving somewhat strain hardenability. …”
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Article -
1471
Investigation of maraging steel M789 parts fabricated by direct energy deposition
Published 2022“…Additionally, mechanical tests such as tensile tests, Vickers hardness tests, and nanoindentation were done to characterize the mechanical properties of M789 heat-treated at different temperatures. …”
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Final Year Project (FYP) -
1472
EBSD characterization of selected laser melted 316L stainless steel
Published 2022“…It is found that SLM results in longer, epitaxial grains to be observed and leads to finer grain sizes which in turn leads to more improved mechanical properties such as strength. Also, Vickers microhardness tests are conducted and SLM of the sample leads to increased average microhardness value of 219.04 HV while wrought 316L has an average value of 198.76 HV.…”
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Final Year Project (FYP) -
1473
Effect of laser shock peening on inconel 718 for hydrogen embrittlement
Published 2024“…Cathodic hydrogen charging was performed on the samples, and they were analyzed using an Olympus digital microscope. Vicker’s hardness testing was performed on the samples to determine the mechanical properties of the samples before and after laser shock peening. …”
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Final Year Project (FYP) -
1474
Investigation of copper alloy fabricated via laser powder bed fusion
Published 2024“…Additionally, mechanical tests such as tensile tests, Vickers hardness tests, and nanoindentation were done to characterize the mechanical properties of Cu-Cr-Zr heat treated at different temperatures. …”
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Final Year Project (FYP) -
1475
Microstructural characterization of parts produced by the hybrid directed energy deposition (HDED) process based on surface type and additive parameters
Published 2019“…Their hardness values were also investigated using the Vickers Hardness method. Lastly, the samples were viewed under the SEM. …”
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Final Year Project (FYP) -
1476
Consolidation of B4C-TaB2 eutectic composites by spark plasma sintering
Published 2016“….% TaB2 obtained by SPS exhibited lower Vickers hardness (25–26 GPa) but higher indentation fracture toughness (up to 4.9 MPa m1/2) than eutectic composites with 30–35 mol.% of TaB2.…”
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Journal Article -
1477
ANALISA STRUKTUR MIKRO DAN KEKERASAN CIRCULAR SAW MS CUTTING
Published 2014“…The next step is using Heat Treatment to change the micro structure in Circular Saw, after that we need to do some hardeness testing using Vickers method to find out how hard Circular Saw is, before and after we admit that test. …”
Thesis -
1478
PERBEDAAN KEKERASAN MIKRO PERMUKAAN RESIN KOMPOSIT MIKROFIL DAN NANOFIL PADAPENGGUNAAN BAHAN KARBAMID PEROKSIDA45% DAN HIDROGEN PEROKSIDA38%> SECARAIN OFFICEBLEACHING (Penelitian E...
Published 2011“…Kekerasan mikro permukaan resin komposit terhadap bahan bleaching diuji menggunakan alat uji Vickers dan hasilnya dibandingkan menggunakan analisis varian dua jalur. …”
Article -
1479
PENGARUH IMPLANTASI ION KHROM TERHADAP KEKERASAN, STRUKTUR MIKRO, DAN LAJU KOROSI DALAM MEDIA CAIRAN PBS PADA BAJA STAINLESS STEEL AISI 316 L
Published 2011“…Hardness surface for implanted and unimplanted samples were tested using micro vickers hardness. Corrosion test in PBS solution was carried out using three cell electrodes. …”
Thesis -
1480
Sintering temperature optimization of ultra-fine Tungsten Carbide Cobalt (WC-CO) tool insert with addition of Carbon (C) and Vanadium Carbide (VC) \ Muhammad Haikal Muhammad Mukhta...
Published 2017“…The effect of sintering temperature on the mechanical properties of WC-Co-C-VC was determined by transverse rupture strength (TRS) test, Vickers hardness test, density measurement, and microstructure analysis. …”
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Student Project