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Journal articles on the topic 'Vickers Hardness measurement'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

MIYAHARA, Kensuke, Nobuo NAGASHIMA, Saburo MATSUOKA, and Takahito OHMURA. "Evaluation of Vickers Hardness by Nanoindentation Measurement." Transactions of the Japan Society of Mechanical Engineers Series A 64, no. 626 (1998): 2567–73. http://dx.doi.org/10.1299/kikaia.64.2567.

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2

Aoki, Y., D. M. Rück, D. Vogt, K. Leible, I. Khubeis, and O. Meyer. "Vickers hardness measurement of ion implanted MgO." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 91, no. 1-4 (1994): 247–51. http://dx.doi.org/10.1016/0168-583x(94)96225-1.

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3

Tanaka, Y., Y. Seino, and K. Hattori. "Vickers hardness measurement by using convolutional neural network." Journal of Physics: Conference Series 1065 (August 2018): 062001. http://dx.doi.org/10.1088/1742-6596/1065/6/062001.

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4

Tanaka, Yukimi, Yutaka Seino, and Koichiro Hattori. "Automated Vickers hardness measurement using convolutional neural networks." International Journal of Advanced Manufacturing Technology 109, no. 5-6 (2020): 1345–55. http://dx.doi.org/10.1007/s00170-020-05746-4.

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5

Sidjanin, Leposava, Dragan Rajnovic, Jonjaua Ranogajec, and Elvira Molnar. "Measurement of Vickers hardness on ceramic floor tiles." Journal of the European Ceramic Society 27, no. 2-3 (2007): 1767–73. http://dx.doi.org/10.1016/j.jeurceramsoc.2006.04.150.

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6

Dodi Sofyan Arief, Dodi, Muftil Badri, M. Dalil, Agus Reforiandi, and Agus Surya Permana. "Calibration Of Vickers Hardness Test PT.Tenaris Seamless Pipe Indonesia Jaya Cilegon Using Standar Blok." Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) 64, no. 3 (2020): 81–87. http://dx.doi.org/10.36842/jomase.v64i3.203.

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A calibration is an activity to determine the conventional validity of the appointment value of measuring instruments and measuring materials by comparing them to standard measurements that are traceable to national and international standards for measurement units and or international and certified reference materials. The calibration is generally a process of adjusting the output or indication of a measurement device to match the magnitude of the standard used in certain accuracy. The purpose of this paper is to find out the vickers hardness test calibration whether the machine running norma
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7

Daemi, Bita, Robert Tomkowski, and Andreas Archenti. "High precision 3D evaluation method for Vickers hardness measurement." CIRP Annals 69, no. 1 (2020): 433–36. http://dx.doi.org/10.1016/j.cirp.2020.03.022.

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8

Varouti, Eirini, C. Giannouli, Z. Petrakou, and K. Sapountzi. "Steel Hardness Determination Using the Barkhausen Noise Effect." Key Engineering Materials 495 (November 2011): 229–32. http://dx.doi.org/10.4028/www.scientific.net/kem.495.229.

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The Barkhausen noise technique (BHN) has been used as a non destructive tool for the measurement of the hardness in various types of steel, namely low carbon steel, TRIP steel, Duplex steel and welding in low carbon steel. The steel samples have undergone different mechanical treatment, such as plastic deformation, cold rolling or welding. Hardness and microhardness have been determined in terms of Vickers standards. A remarkably linear dependence of the BHN on the Vickers hardness of the corresponding samples with an uncertainty in the order of 3-5% has been achieved, illustrating that the BH
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9

TOKIOKA, Takahiro, Tachio TAKANO, Norio KASAHARA, and Yoshinobu IDE. "On the study of Vickers hardness measurement of human teeth." Proceedings of the JSME annual meeting 2000.1 (2000): 417–18. http://dx.doi.org/10.1299/jsmemecjo.2000.1.0_417.

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10

Gadermayr, Michael. "Robust algorithm for automated microindentation measurement in Vickers hardness testing." Journal of Electronic Imaging 21, no. 2 (2012): 021109. http://dx.doi.org/10.1117/1.jei.21.2.021109.

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11

Kuzu, C., E. Pelit, and I. Meral. "A new design of Rockwell-Brinell-Vickers hardness standard machine at UME." ACTA IMEKO 9, no. 5 (2020): 230. http://dx.doi.org/10.21014/acta_imeko.v9i5.975.

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After successful implementation of two hardness standardizing machines at TSE (Turkish Standards Institution) in Rockwell and Brinell-Vickers hardness scales separately, it became unavoidable to combine them in one machine with a newer design and install it in Hardness Laboratory of UME (National Metrology Institute of Republic of Turkey) within the scope of an internally funded project. In this paper the new design of the Rockwell-Brinell- Vickers hardness standard machine with deadweight force application principle and a laser interferometer optic system as depth measurement unit for Rockwel
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12

Skazochkin, A. A., G. G. Bondarenko, and P. Żukowski. "Features of Measuring the Hardness of a Metal Surface Modified with Ultrafine Particles of Minerals." Devices and Methods of Measurements 11, no. 3 (2020): 212–21. http://dx.doi.org/10.21122/2220-9506-2020-11-3-212-221.

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One of the important characteristics of the surface properties of metal parts subjected to friction is hardness. Hardness measurements are important for determining the operational characteristics of parts and monitoring the technological regimes of surface modification. However, hardness measurements of thin modified layers made by different methods can lead to differences in measurement results. The aim of the article was to study the hardness of a metal surface modified with ultrafine particles of minerals by two different methods (instrumental indentation and Vickers hardness measurement)
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13

Popovici, Victor, Adrian Catalin Pavalache, Mihai Vasile, Ionelia Voiculescu, Elena Manuela Stanciu, and Doru Pausan. "Finite Element Method for Simulating the Vickers Hardness Test." Applied Mechanics and Materials 555 (June 2014): 419–24. http://dx.doi.org/10.4028/www.scientific.net/amm.555.419.

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The purpose of the present paper is to present a different approach to the finite element modeling of the Vickers hardness test measurement, and to establish a numerical correlation between the Young modulus of a material and its hardness. In order to realize this, calculations were based upon the tensions acquired as a result of the hollow caused in the investigated materials by the indenter the maps of stresses. The present work demonstrates that from the results of the simulation based on the finite element method it is possible to compute a material’s hardness.
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14

Vaško, Alan, Ján Sovík, and Marek Krynke. "Determination of Accuracy and Reliability of Portable Hardness Testers." Quality Production Improvement - QPI 1, no. 1 (2019): 289–95. http://dx.doi.org/10.2478/cqpi-2019-0039.

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Abstract The paper is focused on determination of the accuracy and reliability of static and dynamic (portable) hardness testers. The paper deals with the measurement of hardness of calibration hardness plates by 4 different methods (Brinell, Vickers, Rockwell and Leeb) with using 5 different hardness testers (3 static and 2 portable). The hardness values measured by the different hardness testers were compared to the reference hardness listed in the calibration hardness plates and consequently, the accuracy of these measurements was evaluated. The aim of the work has been to determine the acc
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15

Mitchell, M. R., R. E. Link, Pedro Pedrosa Rebouças Filho, Tarique da Silveira Cavalcante, Victor Hugo C. de Albuquerque, and João Manuel R. S. Tavares. "Brinell and Vickers Hardness Measurement Using Image Processing and Analysis Techniques." Journal of Testing and Evaluation 38, no. 1 (2010): 102220. http://dx.doi.org/10.1520/jte102220.

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16

Matsushita, Junichi, Kenji Shimao, Yoshiyuki Machida, et al. "Sintering and Mechanical Properties of Chromium Boride - Chromium Carbide Composites." Materials Science Forum 534-536 (January 2007): 1077–80. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1077.

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Several boride sintered bodies such as TiB2, ZrB2, and SiB6 were previously reported. In the present study, the sinterability and physical properties of chromium boride (CrB2) containing chromium carbide (Cr3C2) sintered bodies were investigated in order to determine its new advanced material. The samples were sintered at desired temperature for 1 hour in vacuum under a pressure by hot pressing. The relative density of sintered bodies was measured by Archimedes’ method. The relative densities of CrB2 addition of 0, 5, 10, 15 and 20 mass % Cr3C2 composites were 92 to 95 %. The Vickers hardness
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17

Wang, G. D., and Luen Chow Chan. "Hydroformability of Bulge Forming Light-Weight Tubes via Micro-Hardness Dependence." Key Engineering Materials 465 (January 2011): 149–52. http://dx.doi.org/10.4028/www.scientific.net/kem.465.149.

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To evaluate the hydroformablility of tubular components in the tube hydroforming (THF) process, the conventional method is to measure the deformed square or circle grids printed on the surface of the tubular parts. However, the reliability of those measured data is affected greatly by the grid size and its measurement method on the curved surface. It is well-known that material hardness varies under different plastic deformation conditions, especially before and after the forming process. And it is more convenient to obtain the Vickers’ hardness values and distribution around the burst area of
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18

Niakan, Ali Asghar, M. H. Idris, Ali Ourdjini, and Majid Karimian. "Properties of Pressurized Lost Foam Casting of Al-11Si Alloy." Advanced Materials Research 383-390 (November 2011): 1730–34. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.1730.

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Lost Foam Casting, pressurized casting, solidification, mechanical properties. Abstract. The paper presents the result of investigation on aluminum-silicon (LM6) alloy cast using pressurized lost foam casting process. The study investigated the effect of pressure and sand size on hardness and roughness of the casting produced. Air pressure of 1, 2, 3 and 4 bars was applied on the solidifying alloy poured in mould of sand sized 40-60(AFS). The roughness and hardness of the casting was measured using Hobson (Surtronic 3+) and Vickers hardness testing machine respectively and reported in the aver
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19

Maier, Andreas. "Efficient focus assessment for a computer vision-based Vickers hardness measurement system." Journal of Electronic Imaging 21, no. 2 (2012): 021114. http://dx.doi.org/10.1117/1.jei.21.2.021114.

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20

Burik, Peter, and Ladislav Pešek. "Effect of Experimental Factors on Hardness Measurement Using the UCI Technique." Materials Science Forum 782 (April 2014): 61–64. http://dx.doi.org/10.4028/www.scientific.net/msf.782.61.

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The work experimentally analyses the effect of various factors on hardness measured values on thin steel sheets using Ultrasonic Contact Impedance (UCI) technique. The conditions experimentally used are compared with that according the ASTM A 1038-08 standard. UCI is an experimental technique for indirect hardness measurement. The equipment uses a Vickers indenter and the hardness measurement is based on the change of the resonance frequency during indenter ́s penetration [.The UCI hardness may depend on some factors, therefore optimal measurement conditions must be determined. The effect of d
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21

Krčmářová, Nela, Jan Šleichrt, Tomáš Doktor, Daniel Kytýř, and Ondřej Jiroušek. "SEMI–AUTOMATED ASSESSMENT OF MICROMECHANICAL PROPERTIES OF THE METAL FOAMS ON THE CELL-WALL LEVEL." Acta Polytechnica CTU Proceedings 7 (December 9, 2016): 72. http://dx.doi.org/10.14311/app.2017.7.0072.

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Metal foams are innovative porous material used for wide range of application such as deformation energy or sound absorption, filter material, or microbiological incubation carrier. To predict mechanical properties of the metal foam is necessary to precisely describe elasto–plastic properties of the foam on cell–wall level. Indentation with low load is suitable tool for this purpose. In this paper custom designed instrumented microindentation device was used for measurement of cell-wall characteristics of two different aluminium foams (ALPORAS and ALCORAS). To demonstrate the possibility of au
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22

Schiavi, Alessandro, Claudio Origlia, Alessandro Germak, et al. "Indentation modulus at macro-scale level measured from Brinell and Vickers indenters by using the primary hardness standard machine at INRiM." ACTA IMEKO 8, no. 1 (2019): 3. http://dx.doi.org/10.21014/acta_imeko.v8i1.650.

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In this paper, the experimental procedure and calculation model for the measurement of the indentation modulus by using the primary hardness standard machine at INRiM in the macro-scale range at room temperature is described. The indentation modulus is calculated based on the Doerner-Nix linear model and from accurate measurements of indentation load, displacement, contact stiffness, and hardness indentation imaging. Measurements are performed with both pyramidal (Vickers test) and spherical indenters (Brinell test). Test force is provided by a dead-weight machine, and the occurring displaceme
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23

Domínguez-Nicolas, S. M., A. L. Herrera-May, L. García-González, et al. "Algorithm for automatic detection and measurement of Vickers indentation hardness using image processing." Measurement Science and Technology 32, no. 1 (2020): 015407. http://dx.doi.org/10.1088/1361-6501/abaa66.

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24

Lima Moreira, Francisco Diego, Maurício Nunes Kleinberg, Hemerson Furtado Arruda, et al. "A novel Vickers hardness measurement technique based on Adaptive Balloon Active Contour Method." Expert Systems with Applications 45 (March 2016): 294–306. http://dx.doi.org/10.1016/j.eswa.2015.09.025.

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25

Li, Quan An, Lei Lei Chen, Wen Chuang Liu, Xing Yuan Zhang, and Hui Zhen Jiang. "Effect of Solution Treatment on Microstructures and Hardness of Mg-Gd-Y-Zr Alloy." Advanced Materials Research 937 (May 2014): 182–86. http://dx.doi.org/10.4028/www.scientific.net/amr.937.182.

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The influence of the solution treatment (at the temperature of 500-520°C for 4-12 h) on microstructures and mechanical properties of Mg-Gd-Y-Zr alloy was investigated by means of optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and Vickers hardness measurement. The as-cast alloy contains a microstructure consisting of α-Mg matrix, Mg5Gd phase and Mg24Y5phase. With increasing solution temperature and time, the quantity of the primary particles (Mg5Gd and Mg24Y5) in the alloy continually decreased, and the degree of recrystallization gradually increased, which resu
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26

Abdel-Rahman, M. A., Alaa Aldeen Ahmed, and Emad A. Badawi. "Testing Natural Aging Effect on Properties of 6066 & 6063 Alloys Using Vickers Hardness and Positron Annihilation Lifetime Techniques." Defect and Diffusion Forum 303-304 (July 2010): 107–12. http://dx.doi.org/10.4028/www.scientific.net/ddf.303-304.107.

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The aim of this work was to produce a high strength 6xxx series Aluminum alloy by adjusting the processing conditions, namely solutionizing and natural aging. It consists of heating the alloy to a temperature at which the soluble constituents will form a homogeneous mass by solid diffusion, holding the mass at that temperature until diffusion takes place, then quenching the alloy rapidly to retain the homogeneous condition. In the quenched condition, heat-treated alloys are supersaturated solid solutions that are comparatively soft and workable, and unstable, depending on composition. At room
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27

Ma, J., K. Zhao, C. Liu, et al. "Composition Optimization of Zirconia Toughened Alumina for Dental Ceramics." Key Engineering Materials 330-332 (February 2007): 1369–72. http://dx.doi.org/10.4028/www.scientific.net/kem.330-332.1369.

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The aim of this study was to optimize sintering aids and processing parameters for zirconia toughened alumina (ZTA) nano-ceramics with optimal properties as dental ceramics. Additive agents (TiO2, MgO, SiO2), dry pressing forces and sintering temperatures are very important for preparation of structural ceramics. In the present study, density and Vickers hardness measurement, SEM, and XRD analysis were employed to investigate the effects of these on the final products. The relevant results showed that higher pressing force led to an increase in the density and Vickers hardness of the sintered
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28

SICOE, Gina Mihaela. "Uncertainty of measurement -Important parameter for product conformity assessment." University of Pitesti. Scientific Bulletin - Automotive Series 30, no. 1 (2020): 1–6. http://dx.doi.org/10.26825/bup.ar.2020.008.

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The measurements are widely used to ensure the quality of products. It is known that the measurement process is influenced by many factors which lead to measurement errors. The uncertainty of measurement is an essential parameter because the expression of the results accompanied by uncertainty offers more confidence in the results. The research presented in this article focuses on methods forcalculating uncertainty and explaining the rules for making decisions when we use uncertainty. Two case studies are presented, one for dimensional measurements and the other for the estimation of the uncer
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29

Nakai, Masaaki, Mitsuo Niinomi, Toshikazu Akahori, et al. "Hard-Ceramic Layer Formed on Ti-29Nb-13Ta-4.6Zr and Ti-6Al-4V ELI during Gas Nitriding." Materials Science Forum 561-565 (October 2007): 1509–12. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.1509.

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The surface of Ti-29Nb-13Ta-4.6Zr (TNTZ) subjected to gas nitriding at 1023–1223 K was investigated in comparison with the conventional biomedical titanium alloy, Ti-6Al-4V ELI (Ti64). After gas nitriding, the microstructures near the surface of these alloys were observed by optical microscopy, X-ray diffraction, Auger electron spectroscopy, and X-ray photoelectron spectroscopy. In both alloys, two titanium nitrides (TiN and Ti2N) are formed and the α phase precipitated by gas nitriding. Furthermore, oxygen impurity in the gas nitriding atmosphere reacts with the titanium nitrides; thus, TiO2
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30

Choi, Jong-Un, Jae-Woo Park, and Kae-Myung Kang. "Hydrogen Embrittlement Evaluation of Subsurface Zone in 590DP Steel by Micro-Vickers Hardness Measurement." Korean Journal of Materials Research 21, no. 11 (2011): 581–86. http://dx.doi.org/10.3740/mrsk.2011.21.11.581.

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31

IKEDA, Kiyoshi. "The micro-Vickers hardness measurement of polyethylene by use of sputter deposited thin films." KOBUNSHI RONBUNSHU 47, no. 6 (1990): 533–36. http://dx.doi.org/10.1295/koron.47.533.

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32

Morales–Rodríguez, A., A. Gallardo–López, A. Fernández–Serrano, R. Poyato, A. Muñoz, and A. Domínguez–Rodríguez. "Improvement of Vickers hardness measurement on SWNT/Al2O3 composites consolidated by spark plasma sintering." Journal of the European Ceramic Society 34, no. 15 (2014): 3801–9. http://dx.doi.org/10.1016/j.jeurceramsoc.2014.05.048.

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33

Abdel-Rahman, M. A., Alaa Aldeen Ahmed, and Emad A. Badawi. "Positron Annihilation & Micro-Hardness Measurement of 6063 and 6066 with Compromise with Ingot Al." Defect and Diffusion Forum 295-296 (January 2010): 39–47. http://dx.doi.org/10.4028/www.scientific.net/ddf.295-296.39.

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The aim of this work was to study the resistance of this type of alloy to quenching. Hardness measurements can be defined as macro-, micro- or nano- scale, according to the forces applied and the displacements obtained. This effect can also be studied using a nuclear, (PALT): positron annihilation lifetime, technique [1]. Microhardness is the hardness of a material, as determined by forcing an indenter such as a Vickers or Knoop indenter into the surface of the material under a 15 to 1000gf load; the indentations are usually so small that they must be measured using a microscope. These samples
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34

Hu, Chun Feng, Qing Huang, Guo Jun Zhang, and Yoshio Sakka. "Tailoring Plate-Like Grained ZrB2 Ceramic via a Strong Magnetic Field Alignment Method Followed by Spark Plasma Sintering." Key Engineering Materials 512-515 (June 2012): 702–5. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.702.

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Through strong magnetic field alignment (SMFA) method followed by spark plasma sintering (SPS), dense tailored ZrB2 ceramic could be prepared using the plate-like grains as initial material. The measured Lotgering orientation factor f(00l) on the textured top surface (TTS) was high as 0.62 and f(hk0) on the textured side surface (TSS) was 0.65. Vickers hardness measurement showed the anisotropic mechanical property of textured sample. On the TTS, the hardness was 13.4 ± 0.9 GPa, while on the TSS the hardness was 12.0 ± 0.9 GPa.
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35

Nitjarunkul, Porawon, Sai Yan Primee, Komkamol Chongbunwatana, and Nopparat Seemuang. "Case Depth Evaluation of Induction Hardened Steel Using Barkhausen Noise Technique." Key Engineering Materials 856 (August 2020): 294–302. http://dx.doi.org/10.4028/www.scientific.net/kem.856.294.

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Barkhausen noise (BHN) measurement is one of electromagnetic testing methods that is suitable for ferromagnetic materials. It has a sensitivity to different material properties such as microstructure, composition, residue stress, hardness, etc. which can also be used to determine the hardness case depth of a hardened layer. The measurement is intriguing because of its time and cost-effectiveness. The aim of this work was to study and select a suitable method to evaluate and predict the hardness case depth of induction hardened S50C steel based on Barkhausen noise measurement. Signal processing
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36

Kang, Seung-Kyun, Young-Cheon Kim, Jin-Woo Lee, Dongil Kwon, and Ju-Young Kim. "Effect of contact angle on contact morphology and Vickers hardness measurement in instrumented indentation testing." International Journal of Mechanical Sciences 85 (August 2014): 104–9. http://dx.doi.org/10.1016/j.ijmecsci.2014.05.002.

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37

Dijmarescu, MC, and MR Dijmărescu. "Design and Development of a Software for the Estimation of the Vickers Hardness Measurement Uncertainty." IOP Conference Series: Materials Science and Engineering 916 (September 11, 2020): 012026. http://dx.doi.org/10.1088/1757-899x/916/1/012026.

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38

Kato, Akira. "Measurement o Vickers Hardness Using Image Processing Techniques. Application of Detection Methods for Straight Lines." Transactions of the Japan Society of Mechanical Engineers Series A 59, no. 559 (1993): 640–45. http://dx.doi.org/10.1299/kikaia.59.640.

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39

Kato, Akira, and Takashi Yoshida. "Measurement of Vickers Hardness Using Image Processing Techniques. 2nd Report. Application of Image Feature Extraction." Transactions of the Japan Society of Mechanical Engineers Series A 61, no. 588 (1995): 1851–57. http://dx.doi.org/10.1299/kikaia.61.1851.

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40

Ibrahim Saleh, Sarwar, Musa Gögebakan, M. S. Omar, Hakan Yaykasli, Celal Kursun, and Bestoon Anwer Gozeh. "Annealing Effect on Structural, Thermal and Mechanical Properties of the Binary Al 85 Ni15 Alloy Composition." Innovaciencia Facultad de Ciencias Exactas Físicas y Naturales 7, no. 1 (2019): 1–8. http://dx.doi.org/10.15649/2346075x.514.

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Introduction: The Al 85-Ni15 alloy with 99.99% purity of Al and Ni were prepared by an arc melting technique system. The annealing effect onthe microstructure properties, phase transformation and micro-hardness for the Al-Ni alloy system were investigated. Material and Methods:The alloys were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Differential Thermal Analysis (DTA) as well as Vickers micro-hardness measurement. Results and Discussion: The quantitative results confirm that the chemical composition of the alloys is very close to compositions and the mi
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41

KIM, CHUNG SEOK, CHANG YOUNG HYUN, and KYOUNG YOUNG JHANG. "CREEP CHARACTERIZATION OF SUPERALLOY IN-738 USING ULTRASONIC NONLINEARITY MEASUREMENT." International Journal of Modern Physics B 25, no. 10 (2011): 1385–92. http://dx.doi.org/10.1142/s0217979211100011.

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The higher harmonic generation technique has been presented to investigate the creep characteristics of nickel-based superalloy. The primary γ′ precipitates became coarsened preferentially in the direction perpendicular to the applied stress axis during the creep deformation and the Vickers hardness decreased with creep time due to loss of interfacial strain between γ matrix and γ′ precipitate. The increase in ultrasonic nonlinearity with increasing creep time is discussed in relation to the directional coarsening of the γ′ precipitates, which was closely related to the scattering and distorti
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42

Beznák, Matej, Alexander S. Chaus, and Lubomír Čaplovič. "Microstructure and Properties of Diffusion Boride Layer on Die Steel." Defect and Diffusion Forum 312-315 (April 2011): 788–93. http://dx.doi.org/10.4028/www.scientific.net/ddf.312-315.788.

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Diffusion boride layer has been produced on the surface of a hot work tool steel. The microstructure and elemental spectra as well as depth profiles of the elements in the boride layer have been studied by scanning electron microscopy, X-ray diffraction analysis and energy dispersive X-ray spectrometry. Micro-hardness measurement was carried out using the Vickers micro-hardness test. The results showed that the boride layer is formed by boron compound Fe2B. Additionally, boron carbide B4C has been revealed embedded in the bulk of the boride layer.
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43

Soares, Priscilla Barbosa Ferreira, Sarah Arantes Nunes, Sinésio Domingues Franco, Raphael Rezende Pires, Darceny Zanetta-Barbosa, and Carlos José Soares. "Measurement of Elastic Modulus and Vickers Hardness of Surround Bone Implant Using Dynamic Microindentation - Parameters Definition." Brazilian Dental Journal 25, no. 5 (2014): 385–90. http://dx.doi.org/10.1590/0103-6440201300169.

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The clinical performance of dental implants is strongly defined by biomechanical principles. The aim of this study was to quantify the Vicker's hardness (VHN) and elastic modulus (E) surround bone to dental implant in different regions, and to discuss the parameters of dynamic microindantion test. Ten cylindrical implants with morse taper interface (Titamax CM, Neodent; 3.5 mm diameter and 7 mm a height) were inserted in rabbit tibia. The mechanical properties were analyzed using microhardness dynamic indenter with 200 mN load and 15 s penetration time. Seven continuous indentations were made
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Žmak, Irena, Danko Ćorić, Vilko Mandić, and Lidija Ćurković. "Hardness and Indentation Fracture Toughness of Slip Cast Alumina and Alumina-Zirconia Ceramics." Materials 13, no. 1 (2019): 122. http://dx.doi.org/10.3390/ma13010122.

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Alumina (Al2O3) and zirconia (ZrO2) have good overall properties and thus are widely used oxide technical ceramics. The biggest drawback of Al2O3 is its low fracture toughness. In contrast, ZrO2 is relatively tough, but is also much more expensive. In order to improve the alumina toughness, composite ceramics are being developed. Slip casting technology has economic advantages over the conventional hot isostatic pressure technology, but problems may arise when preparing stable highly-concentrated suspensions (slip) for filling the mold. The purpose of this study is to prepare aqueous suspensio
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45

Shemkunas, M. P., W. T. Petuskey, A. V. G. Chizmeshya, K. Leinenweber, and G. H. Wolf. "Hardness, elasticity, and fracture toughness of polycrystalline spinel germanium nitride and tin nitride." Journal of Materials Research 19, no. 5 (2004): 1392–99. http://dx.doi.org/10.1557/jmr.2004.0186.

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The hardness, elastic moduli, and fracture toughness of the spinel phases, γ–Ge3N4 and γ–Sn3N4, were determined using indentation data and theoretical calculations. Measurements were performed on polycrystalline specimens using the technique of nanoindentation to determine the reduced moduli and hardnesses from the unloading portion of the indent curves. Reduced moduli of γ–Ge3N4 and γ–Sn3N4 were found to be 295 and 167 GPa, respectively. The nanohardnesses of γ–Ge3N4 and γ–Sn3N4 were found to be 31 and 13 GPa, respectively. The shear moduli G0 and Poisson’s ratios ν0 were derived using theore
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46

Ebata, Yuhei, Mitsuaki Furui, Susumu Ikeno, Katsuya Sakakibara, and Seiji Saikawa. "Discontinuous and Continuous Precipitation during Aging in Mg-Al System Alloys." Advanced Materials Research 409 (November 2011): 329–34. http://dx.doi.org/10.4028/www.scientific.net/amr.409.329.

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In this study, age-hardening behavior of Mg-Xmass%Al alloys (X=3, 4.5, 6, 7.5 and 9mass%) were investigated by Vickers hardness measurement and optical microscopic observation. Each alloy was solution-treated and then isothermal-aged at 473, 498 and 523K. In the case of aluminum content less than 6mass%, Mg-3mass%Al and Mg-4.5mass%Al alloys, occurred insignificant age hardening. In the case of aluminum content higher than 6mass%, Mg-6mass%Al, Mg-7.5mass%Al and Mg-9mass%Al alloys, occurred remarkable age hardening. For each aging temperature, with heighten aluminum content, increase the value o
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Dehghan, Mojtaba, Fathallah Qods, and Mahdi Gerdooei. "Investigation of Microstructure of the Commercial Pure Aluminium in the ARB Process." Materials Science Forum 702-703 (December 2011): 147–50. http://dx.doi.org/10.4028/www.scientific.net/msf.702-703.147.

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The severe plastic deformation (SPD) of metallic materials has become attractive in recent years. Accumulative roll bonding (ARB) is a SPD process that can impose deformation to a sheet metal, as it develops fine grains of typically submicrometer or even the nanometer level in polycrystalline materials. The purpose of the present study is investigation of microstructural evolution and micro hardness behavior of the commercial purity Aluminium (AA1050) severely deformed by the ARB process. The microstructural evolution during 13 cycles of ARB process was investigated. With increasing ARB cycles
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Thongpanit, Pratya, Weerapong Chewpraditkul, and Nakarin Pattanaboonmee. "Growth and Characterization of Boric Acid Doped KDP Single Crystals Grow by Slow Evaporation Method." Advanced Materials Research 770 (September 2013): 378–81. http://dx.doi.org/10.4028/www.scientific.net/amr.770.378.

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Boric acid (0.25, 0.5, 1.0 %wt) doped Potassium Dihydrogen Phosphate (KDP) bulk single crystals were grown from aqueous solutions by slow evaporation method. Solubility and nucleation curves were studied. The grown crystals were confirmed by powder X-ray diffraction analysis. Functional groups presented in the grown material have been identified using FTIR spectra. The temperature stability of the crystal has been confirmed by TGA. The mechanical strength was analyzed using Vickers hardness measurement.
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Yahaya, Muhamad Zamri, and Ahmad Azmin Mohamad. "Hardness testing of lead-free solders: a review." Soldering & Surface Mount Technology 29, no. 4 (2017): 203–24. http://dx.doi.org/10.1108/ssmt-01-2017-0002.

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Purpose This paper aims to cover the recent (2010-2016) techniques for carrying out hardness evaluation on lead-free solders. Details testing configuration/design were compiled and discussed accordingly to each of the measurement techniques: Vickers microhardness, Brinell microhardness and nanoindentation. Design/methodology/approach A brief introduction on lead-free solders and the concept of hardness testing has been described at the beginning of the review. Equipment setup, capabilities, test configuration and outcomes were presented for each technique and discussed in parallel along with t
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Karanja, Liz, Matthieu Lenci, David Piot, et al. "An Attempt to Assess Recovery/Recrystallization Kinetics in Tungsten at High Temperature Using Statistical Nanoindentation Analysis." Crystals 11, no. 1 (2020): 37. http://dx.doi.org/10.3390/cryst11010037.

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Measurement of recovery and recrystallization kinetics of tungsten at high temperature is a key issue for many applications, such as plasma facing units in the framework of thermonuclear fusion. These kinetics are mostly derived from Vickers hardness and EBSD measurements, which can lead to some inaccuracies due to the competition between recovery and recrystallization mechanisms. A complementary/alternative approach based on statistical grid nanoindentation is proposed in this paper. The basic idea is to assume that the fraction recrystallized can be deduced using the hardness probability den
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