Micro-Hardness | p. 2 | Scientific.Net

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class="pagination-container"><ul class="pagination"><li class="PagedList-skipToPrevious"><a href="/paper-keyword/micro-hardness/1" rel="prev"><</a></li><li><a href="/paper-keyword/micro-hardness/1">1</a></li><li class="active"><span>2</span></li><li><a href="/paper-keyword/micro-hardness/3">3</a></li><li><a href="/paper-keyword/micro-hardness/4">4</a></li><li><a href="/paper-keyword/micro-hardness/5">5</a></li><li class="PagedList-ellipses"><a class="PagedList-skipToNext" href="/paper-keyword/micro-hardness/6" rel="next">…</a></li><li class="PagedList-skipToNext"><a href="/paper-keyword/micro-hardness/3" rel="next">></a></li><li class="PagedList-skipToLast"><a href="/paper-keyword/micro-hardness/7">>></a></li></ul></div> </div> <div class="block-volume-title normal-text-gray"> <p> Paper Title<span>Page</span> </p> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.989.615">The Numerical Mathematical Modeling of Gradient Hardening Processes under Conditions of Complex Local Loading of the Center of Deformation</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Vyacheslav A. Golenkov, Daniil O. Dorokhov, Sergey Y. Radchenko </div> </div> <div id="abstractTextBlock551271" class="volume-info volume-info-text volume-info-description"> Abstract: The paper considered the peculiarities of the numerical mathematical modeling of gradient hardening processes under conditions of complex local loading of the center of deformation. The authors described the mathematical model. They presented the results of modeling in the form of a picture of the change in Odkvist parameter with an increase in the number of passes. Data were given on the comparison of the results of experimental work and mathematical modeling. </div> <div> <a data-readmore="{ block: '#abstractTextBlock551271', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 615 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.989.577">Structural Changes in the Aluminum - Magnesium System Alloy</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: I.E. Illarionov, T.R. Gilmanshina, A.A. Kovaleva </div> </div> <div id="abstractTextBlock551265" class="volume-info volume-info-text volume-info-description"> Abstract: The purpose of this work is to study the structure and mechanical properties of an aluminum – magnesium system alloy after various types of heat treatment (quenching and ageing). The microstructure of an alloy has been studied by means of Zeiss OBSERVER.D1m microscope combined with a camera and image display on a monitor screen. Micro X-ray spectral analysis was performed by means of Carl Zeiss EVO 50 scanning electron microscope. The micro-hardness of the samples has been measured on prepared metallographic sections by means of DM8 micro-hardness meter. In the course of the process it has been found that quenching the Al-12,78% Mg alloy from temperatures of 430–440 ° C does not lead to the formation of a single-phase solid solution. Ageing at 100 ° C enables the formation of secondary phases. It was noted that with an increase in the quenching temperature, the micro-hardness increases slightly. An increase in the exposure time doesn’t influence greatly the micro-hardness of the alloy, while the structure remains practically unchanged. </div> <div> <a data-readmore="{ block: '#abstractTextBlock551265', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 577 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.424">Effect of Hf Doping of Commercially Pure Copper on Evolution of its Microstructure under High Pressure Torsion</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Alexey V. Stolbovsky, Vladimir Popov, Ruslan Falahutdinov </div> </div> <div id="abstractTextBlock546669" class="volume-info volume-info-text volume-info-description"> Abstract: Evolution of the structure of commercially pure copper and Cu-0.8%Hf alloy under high pressure torsion (HPT) is compared. It is demonstrated that doping with Hf affects appreciably a tendency to relaxation processes inherent to copper. Introduction of additional impurities enables to achieve finer fragmentation of structure and increase of microhardness with the strain growth, compared to the commercially pure copper, in which these parameters are weakened by the intensively developing relaxation processes. However, these processes can serve a limiting factor for fragmentation and microhardness increase in the Cu-0.8Hf alloy as well, under the HPT by 5 revolutions of anvils. </div> <div> <a data-readmore="{ block: '#abstractTextBlock546669', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 424 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.723">Investigation of Grey Iron Primary Structure Influence on Hollow Castings Strength</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: V.P. Grusha, V.F. Bevza, Aleksandr A. Baron </div> </div> <div id="abstractTextBlock546426" class="volume-info volume-info-text volume-info-description"> Abstract: For the hollow cylindrical grey cast iron billets, received by method of the directional solidification on the section of a wall, structural changes are investigated. Micro-hardness in zones of dendritic crystals and the eutectic matrix are determined. </div> <div> <a data-readmore="{ block: '#abstractTextBlock546426', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 723 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.772">Structural Formation in the Zone of Interaction under Laser Processing of Bimetal M1 + VT1-0</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Aleksey Serov, Oleg V. Slautin, Dmitri Pronichev </div> </div> <div id="abstractTextBlock546261" class="volume-info volume-info-text volume-info-description"> Abstract: The processes of structure formation in the bimetal М1 + VТ1-0 after laser treatment from the side of copper are studied. The structure, phase and chemical composition of the interaction zone was investigated, the factors influencing the change in its hardness were determined. </div> <div> <a data-readmore="{ block: '#abstractTextBlock546261', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 772 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.872">Morphology and Properties of Solid Chrome Plating, Obtained by the Galvano-Mechanical Method</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: D.M. Galimov, Dmitry V. Ardashev, Aleksandr A. Dyakonov </div> </div> <div id="abstractTextBlock546258" class="volume-info volume-info-text volume-info-description"> Abstract: In this article, studies of chromium coatings obtained by a conventional electroplating method, as well as by electroplating combined with mechanical processing, were carried out. The metallographic investigations and the micro-hardness tests of the coating were carried out and characteristic types of electroplating chromium coatings were determined. It was determined that the coating obtained by galvano-mechanical processing (current density – 75 A/dm<sup>2</sup>, solution temperature – 58 °C, chrome plating time – 45 min) does not have dendritic defects, fits snugly to the base material, however, is characterized by an increased fragility. The micro-hardness of the galvanic chrome plating, obtained by electroplating, with a load of 100 g, is 960...990 HV. The surface of galvanic chromium coatings obtained under different conditions was investigated, the advantage of the galvano-mechanical technology of applying a chromium coating, implemented on the sample under study, was shown. </div> <div> <a data-readmore="{ block: '#abstractTextBlock546258', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 872 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.933">Quantitative Assessment of Dissipative Properties of Superficial Structure of the Steel 25XM Strengthened by Pulse Laser Influence</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Vladimir A. Kim, Aung Ngwe Thein </div> </div> <div id="abstractTextBlock545999" class="volume-info volume-info-text volume-info-description"> Abstract: The superficial structure strengthened by laser radiation is formed in no equilibrium conditions of interaction of material with the high-concentrated energy stream. Education and development of such structure is realized on synergetic algorithm of process of phase and structural transformations. Dissipative properties of the strengthened structures can be described a complex of quantitative indices, such as amount of "dark" microstructural objects on the single surface area of a micro section and the average density of borders, calculated according to images of microstructures by means of special programs .Nature of distribution of microstructural indicators on depth of the strengthened layer depending on the modes of laser influence and their correlation with a micro hardness is shown in article. </div> <div> <a data-readmore="{ block: '#abstractTextBlock545999', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 933 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.812">Study of the Micro-Hardness of Anti-Friction Coating after Plastic Deformation in Bimetallic Sliding Bearings</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Alexey Yu. Rodichev, Andrey V. Gorin, Maria A. Tokmakova </div> </div> <div id="abstractTextBlock545879" class="volume-info volume-info-text volume-info-description"> Abstract: The article presents the results of experimental studies of the micro-hardness of anti-friction surfaces of bimetallic sliding bearings. As a result, the nature and features of the process of distribution of the micro-hardness of the coating along the height of the anti-friction coating were revealed. A method of manufacturing a bimetallic sliding bearing is proposed, which will allow an increase in the micro-hardness of the anti-friction coating and its uniform height distribution. This method allows to reduce the porosity of the anti-friction coating and to achieve the specified processing parameters of the anti-friction surface. </div> <div> <a data-readmore="{ block: '#abstractTextBlock545879', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 812 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.749">Corrosion Resistance of MAO Coatings on Al-Si Alloys</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: N.Yu. Dudareva, E.I. Ustimova, Rida Gallyamova </div> </div> <div id="abstractTextBlock545872" class="volume-info volume-info-text volume-info-description"> Abstract: The paper presents the results of an experimental study of the influence of micro-arc oxidation (MAO) on the parameters and the corrosion resistance of MAO-treated surfaces on a high-silicon aluminum alloy, M244 (Si ~ 25 %). The article describes the study methodology, comprising forming a coating on the surface of laboratory samples by means of MAO at different process modes and the study of their parameters, properties, and corrosion resistance. The experiments were conducted in accordance with the 2<sup>3 </sup>full factorial experiment design theory. The MAO process was carried out using a silicate-alkaline electrolyte. MAO factors were as follows: the concentration of the electrolyte components (potassium hydroxide – KOH and liquid glass – Na<sub>2</sub>SiO<sub>3</sub>) and electrical parameters of the process, determined by the capacitor capacitance of the processing unit. The samples were tested to define thickness, porosity and micro-hardness of the MAO layer. Being corroded in a corrosive solution for 144 hours, their corrosion resistance was estimated by a mass corrosion rate. The data obtained made it possible to form mathematical models, based on the dependence of corrosion resistance, thickness, porosity and micro-hardness on the process factors. A verification of the obtained models was carried out to determine adequacy and their analysis. Conclusions on the extent of the MAO effect on the corrosion resistance of the samples were drawn. MAO modes were stated to have a significant impact on the corrosion resistance of the samples. MAO should be carried out using low electrolyte concentrations and a low-capacity processing unit for improved corrosion-protective properties of the coating on the M244 (Mahle) aluminum alloy. It is necessary to increase the concentration of the electrolyte components and the processing unit capacity, to obtain a thicker coating with low micro-hardness and porosity. </div> <div> <a data-readmore="{ block: '#abstractTextBlock545872', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 749 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/SSP.299.737">The Effect of Silicon in Al-Si Alloys and Electrical Treatment Modes on Structure and Properties of MAO-Coatings</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: N.Yu. Dudareva, Rida Gallyamova </div> </div> <div id="abstractTextBlock545870" class="volume-info volume-info-text volume-info-description"> Abstract: The work shows the influence of the content of silicon in the aluminum alloy and the regimes of micro-arc oxidation (MAO) on the structure and properties of the formed coatings. Treatment of samples from high-silicon aluminum alloys AK12pch (Si ~12 %) and M244 (Si ~25 %) was carried out in two modes, which have different installation capacity MAO. The thickness, micro-hardness, porosity of the formed MAO coatings was investigated. It is established that the increase in the proportion of silicon in the aluminum alloy leads to the formation of MAO coatings of significant thickness (~230 μm), with low micro-hardness (HV ~650) and high porosity (up to ~16 %). Increase 4 times the installation capacity of MAO causes the growth of the thickness of the coating, reduces the porosity of the coating on the alloy AK12pch and increases the porosity of the coating on the alloy M244. </div> <div> <a data-readmore="{ block: '#abstractTextBlock545870', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 737 </div> </div> <div class="block-bottom-pagination"> <div class="pager-info"> Showing 11 to 20 of 64 Paper Titles </div> <div class="pagination-container"><ul class="pagination"><li class="PagedList-skipToPrevious"><a href="/paper-keyword/micro-hardness/1" rel="prev"><</a></li><li><a href="/paper-keyword/micro-hardness/1">1</a></li><li class="active"><span>2</span></li><li><a href="/paper-keyword/micro-hardness/3">3</a></li><li><a href="/paper-keyword/micro-hardness/4">4</a></li><li><a href="/paper-keyword/micro-hardness/5">5</a></li><li class="PagedList-ellipses"><a class="PagedList-skipToNext" href="/paper-keyword/micro-hardness/6" rel="next">…</a></li><li class="PagedList-skipToNext"><a href="/paper-keyword/micro-hardness/3" rel="next">></a></li><li class="PagedList-skipToLast"><a href="/paper-keyword/micro-hardness/7">>></a></li></ul></div> </div> </div> </div> </div> </div> </div> <div class="social-icon-popup"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-popup-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-popup-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-popup-icon social-icon"></i></a> </div> </div> <div class="sc-footer"> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="footer-menu col-md-12 col-sm-12 col-xs-12"> <ul class="list-inline menu-font"> <li><a href="/ForLibraries">For Libraries</a></li> <li><a href="/ForPublication/Paper">For Publication</a></li> <li><a href="/insights" target="_blank">Insights</a></li> <li><a href="/DocuCenter">Downloads</a></li> <li><a href="/Home/AboutUs">About Us</a></li> <li><a href="/PolicyAndEthics/PublishingPolicies">Policy & Ethics</a></li> <li><a href="/Home/Contacts">Contact Us</a></li> <li><a href="/Home/Imprint">Imprint</a></li> <li><a href="/Home/PrivacyPolicy">Privacy Policy</a></li> <li><a href="/Home/Sitemap">Sitemap</a></li> <li><a href="/Conferences">All Conferences</a></li> <li><a href="/special-issues">All Special Issues</a></li> <li><a href="/news/all">All News</a></li> <li><a href="/open-access-partners">Open Access Partners</a></li> </ul> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-footer-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-footer-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-footer-icon social-icon"></i></a> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12 footer-copyright"> <p> © 2025 Trans Tech Publications Ltd. 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