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        <title>Powder Metallurgy Progress Feed</title>
        <link>https://reference-global.com/journal/PMP</link>
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            <title>Powder Metallurgy Progress Feed</title>
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            <link>https://reference-global.com/journal/PMP</link>
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        <copyright>All rights reserved 2026, Slovak Academy of Sciences, Institute of Materials Research</copyright>
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        <item>
            <title><![CDATA[Optimization and modeling of sinter-brazing of porous copper-based composites joined to a wrought steel substrate]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2026-0001</link>
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            <pubDate>Wed, 09 Sep 2026 00:00:00 GMT</pubDate>
            <description><![CDATA[Sinter-brazing of a powder-metallurgy porous copper-based composite to a wrought steel substrate was investigated. Two commercial Cu-based filler metals (Hi-Temp 548 disk and CDA 521) and different heating profiles were evaluated to identify a process window that maximizes joint performance while limiting wicking of the molten filler into the open porosity. Peak temperature (1010–1020 ◦C) and holding time (5–10 min) were varied under N2. Shear testing and metallography show that increasing peak temperature or holding time reduces joint shear strength due to excessive infiltration of the filler and associated microstructural coarsening. The maximum joint shear strength (8.76 ± 0.5 MPa) was obtained using Hi-Temp 548 at 1015 ◦C with a 5 min hold. A three-dimensional CFD model based on the volume-of-fluid method and the continuum surface-force formulation was developed to predict filler infiltration into the porous compact. The predicted infiltration depth (415 μm) agreed with experiments (389 μm) within 7%. Parametric simulations indicate that infiltration increases with decreasing filler density and viscosity and with increasing holding time, with holding time being the dominant factor.]]></description>
            <category>ARTICLE</category>
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        <item>
            <title><![CDATA[Effect of the Processing Routes on the Properties of CoCrFeMnNi Alloy]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0004</link>
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            <pubDate>Mon, 13 Nov 2023 00:00:00 GMT</pubDate>
            <description><![CDATA[High entropy alloys are one of the most developing classes of materials of the 21st century. Their properties can significantly vary depending on their chemical composition and processing method. Thus, the microstructure and mechanical properties of CoCrFeMnNi high entropy alloy prepared by conventional casting, melt-spinning and mechanical alloying were investigated in this study. The observed structure and grain size were typical for this type of alloy and production methods. It was found that the hardness of the sample prepared by mechanical alloying with subsequent spark plasma sintering is higher compared to cast and melt-spun samples due to the finer microstructure and higher deformation energy stored.]]></description>
            <category>ARTICLE</category>
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            <title><![CDATA[The Influence of Tilt on Berkovich Indentation of a Steel Sample Using FEM Analysis and Nanoindentation]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0007</link>
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            <pubDate>Mon, 13 Nov 2023 00:00:00 GMT</pubDate>
            <description><![CDATA[The main shape deviations of a Berkovich indenter are the indenter bluntness and indenter tilt. The influence of the Berkovich indenter tilt on the results of the FEM modelling of steel nanoindentation is evaluated in this paper. The indenter tilt has an impact on the indentation curves and contact area. The X5CrNiCuNb 16-4 steel nanoindentation was modelled by FEM and the indentation curves were obtained. The Berkovich indenter was blunted and the tilt of the indenter was changed to determine its influence on the indentation curves. The results showed that growing tilt shifts the indentation curves to higher values of indentation forces and makes unloading curves steeper which is in agreement with a larger contact area. The calculated indentation curves were compared with the experimental indentation curves and the impact of the indenter tilt to the indentation curves was determined.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Micromechanical Properties of Reactive HiTUS TiNbVTaZrHf–N Coatings on Different Substrates]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0005</link>
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            <pubDate>Mon, 13 Nov 2023 00:00:00 GMT</pubDate>
            <description><![CDATA[High entropy ceramic coatings, including multicomponent transition metal nitrides called also high entropy nitrides (HEN), are usually deposited using reactive arc and/or DC magnetron (co)sputtering. High Target Utilization Sputtering (HiTUS) was not applied in HEN systems up to now. Subsequently, the mechanical properties of HEN coatings prepared by HiTUS are also not known. The transition metals from the 4th and 5th group of the periodic table (Ti, Zr, Hf, Nb, V, and Ta) are strong nitride formers which would be the most suitable for HEN coating systems and therefore, investigation of their properties would be of significant interest. However, the nanoindentation measurements on thin coatings always produce „composite“ values involving the contribution from the substrate. The separation of the coating properties from composite values requires upgraded analytical approaches different from standard Oliver &amp; Pharr analysis. Thus, the aim work is to investigate the structure, hardness, and elastic modulus of TiZrHfNbVTa–xN coatings with different nitrogen stoichiometry deposited by reactive HiTUS using both CSM for bulk and CSM for thin films methods and to compare the results obtained on 4 different substrates (Si wafer, sapphire, 100Cr6 steel, and Ti6Al4V alloy). The subsequent results showed systematic differences in the calculated mechanical properties depending on the substrate properties both in CSM and CSMTF modes. Stiffer substrates always resulted in the overestimations of the calculated hardness and indentation modulus compared to softer substrates with lower Young’s modulus and the differences were in the range of around 10 %. Obviously, better theoretical models for the calculations of true coating properties are required.]]></description>
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            <title><![CDATA[Effect of Machining on Mechanical Properties of Borosilicate Glasses]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0008</link>
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            <pubDate>Mon, 13 Nov 2023 00:00:00 GMT</pubDate>
            <description><![CDATA[Although optical properties are essential for materials for optical purposes, their mechanical properties must also be considered as they directly govern their practical applicability as well as their machining. The machining of optical glasses is mainly carried out by mechanical removal of the material using free or bonded abrasives. The relationship between the local mechanical properties of three types of borosilicate glasses used to produce optical elements (mirrors) and the type of surface machining was investigated. The samples were machined using two approaches, namely 7-axis CNC surface machining and conventional manual machining. Advanced analysis of nano/micro-mechanical properties was performed on glass samples using quasi-static nanoindentation and microindentation and dynamic impact test complemented by the analysis of the acoustic emission signals generated during the mechanical tests.The results show a difference in mechanical properties between industrial and optical borosilicate glasses. The type of machining has a strong influence on studied mechanical properties and surface quality. Glasses manufactured by CNC have more pronounced acoustic emission signal and crack more than glasses manufactured by hand. The different behavior of hand- and CNC-machined surfaces can be linked to different subsurface damage caused by different contact conditions between the workpiece and the instrument/abrasive. As a result, a different density of surface and especially (near)-subsurface flaws are present in the glass. Simax is slightly softer than BG33 glass, which together with the less pronounced AE may indicate a lower amount of subsurface cracks/damage.]]></description>
            <category>ARTICLE</category>
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        <item>
            <title><![CDATA[Investigation of Hybrid Lap Welds of TI6AL4V and Stainless Steel with Bronze Interlayer]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0006</link>
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            <pubDate>Mon, 13 Nov 2023 00:00:00 GMT</pubDate>
            <description><![CDATA[Welding of the austenitic stainless steel AISI 304 and Ti6Al4V is complicated by hard and brittle intermetallic compound formation. In this contribution, we study a laser welding method that partially overcomes this problem using interlayer. Bronze foil (CuSn6) of thickness 100 µm and 200 µm was inserted between steel and titanium sheets and lap welds were realized on pulsed Nd:YAG laser. Representative samples were investigated by nanohardness measurement, SEM/EDS, and XRD analysis to detect the localization of the intermetallic phases. The macrostructure of the weld cross sections was displayed by optical and digital microscopy. The nano-hardness test revealed the presence of very hard intermetallic mainly around the interface between the fusion zone and bottom metal sheet. EDS mapping displayed the main elements Fe, Cr, Cu and Ti distribution in the fusion zone, EDS line scanning detected elements‘ signals in the diagonal and horizontal directions. XRD analysis revealed expected intermetallic compounds FeTi and CuTi2 and solid solution Cu0.8Fe0.2.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Announcements: Professor RNDr. Ján Dusza, DrSc – 70 years jubeeleum]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0001</link>
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            <pubDate>Mon, 05 Jun 2023 00:00:00 GMT</pubDate>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Fracture Toughness of Cement Paste Assessed with Micro-Scratch and Acoustic Emission]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0002</link>
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            <pubDate>Mon, 05 Jun 2023 00:00:00 GMT</pubDate>
            <description><![CDATA[Micro-scratch test was used to evaluate the fracture toughness of the main hydration products of ordinary Portland cement paste at the micro-scale. The evaluation was done with the aid of scanning electron microscopy and acoustic emission (AE) signals. Portlandite was found to be the only phase where AE detected elastic waves due to cracking during microindentation and micro-scratch test. Such behavior simplifies phase separation during the evaluation process of the micro-scratch test. The micro-scale fracture toughness results obtained from the tests were found in close agreement with other available experiments and models in the literature.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Evaluation of Residual Stress and Tensile Properties of Railway Axle Using Instrumented Indentation Method]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2022-0003</link>
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            <pubDate>Mon, 05 Jun 2023 00:00:00 GMT</pubDate>
            <description><![CDATA[This paper deals with the characterization of residual stresses of the railway axle made of EA4T steel using the instrumented indentation technique (IIT). Additionally, tensile properties were also evaluated by using IIT. Moreover, the hole drilling method was carried out to measure the residual stress. Multiple comparison tests between conventional methods and IIT were carried out. The obtained results were also discussed against the literature data. Results of the residual stress assessed by IIT and the hole drilling follow the same trend and are in acceptable agreement. The tensile data obtained by IIT were as follows: YS ≥ 420 MPa and UTS ∈ ❬650-800❭MPa which is in satisfactory agreement with the results of standardized tensile tests.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Announcements: Eva Dudrová – 80 years]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2021-0007</link>
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            <pubDate>Thu, 29 Dec 2022 00:00:00 GMT</pubDate>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Combined Effect of Phosphate and Polymer Coating on Cytotoxicity and Hemocompatibility of Iron Foams]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2021-0005</link>
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            <pubDate>Thu, 29 Dec 2022 00:00:00 GMT</pubDate>
            <description><![CDATA[The use of resorbable metallic biomaterials for temporary implants has increased dramatically in the last decade. Degradable biomaterials are desirable in some specific pediatric, orthopedic, and cardiovascular applications, in which they may overcome the disadvantages of permanent devices. The three main biodegradable metals: Mg, Fe, and Zn, are intensively studied as temporary orthopedic implant materials. Among them, iron, and iron-based alloys, have received attention as promising materials for the temporary replacement of bones, especially for applications where strong mechanical support during the bone healing process is required. The addition of a low amount of phosphorus can improve the mechanical properties of such materials without the risk of retarding the corrosion rate or affecting cell proliferation. The main goal of this work was to study the combined effect of phosphating and polymer coating of open-cell iron foams on their cytotoxicity and hemocompatibility. Obtained results indicated the positive influence of the PEG coating layer and phosphorus addition on material cytocompatibility. Moreover, the combination of these procedures led to the inhibition of hemolysis, platelet adhesion, and thrombus formation.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Effect of Sintering Time on Mechanical Properties of (Hf-Ta-Zr-Nb-Ti)C]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2021-0006</link>
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            <pubDate>Thu, 29 Dec 2022 00:00:00 GMT</pubDate>
            <description><![CDATA[Advanced high-entropy (Hf-Ta-Zr-Nb-Ti)C ceramics were successfully fabricated by the combination of ball milling and a two-step sintering process at 2100 °C for 5, 10, and 20 minutes from commercially available powders. The microstructure characteristics and mechanical properties of the developed systems were investigated. The high-entropy ceramics exhibit: medium grain size from 8 μm to 11 μm, high compositional uniformity, and high relative density above 99.5 %. Vickers hardness for all systems decreased with increasing applied load, with the highest value HV1 = 22.0 GPa for the system sintered for 5 minutes, while the fracture toughness changed from 2.70 MPa.m1/2 to 3.50 MPa.m1/2. The highest four-point flexural strength of 284 MPa was measured for the system with the smallest grain size.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Announcements]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2021-0004</link>
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            <pubDate>Wed, 13 Apr 2022 00:00:00 GMT</pubDate>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Influence of the Ferromagnetic Component on the Magnetic Properties of Polymer-Matrix Soft Magnetic Composites]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2021-0001</link>
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            <pubDate>Wed, 13 Apr 2022 00:00:00 GMT</pubDate>
            <description><![CDATA[The paper presents the study of the influence of different ferromagnetic powders on magnetic properties of polymer-matrix soft magnetic composites. Samples were prepared from pure Fe and Permalloy powders with the same amount of resin and by the same technological process. The coercivity, the real part of complex permeability, saturation magnetic polarization, hysteresis loops and total energy losses and their components were investigated. It was found that the coercivity, DC losses, classical losses, excess losses and thus the total energy losses of composites depended on intrinsic magnetic properties and/or on the size and shape of ferromagnetic powder particles, while the permeability of composites was affected predominantly by inner demagnetizing fields due to the insulation. The numbers of moving domain walls involved in magnetization reversal were analyzed in connection with the magnetic properties.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Iron Based Soft Magnetic Composite Material Prepared By Injection Molding]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2021-0002</link>
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            <pubDate>Wed, 13 Apr 2022 00:00:00 GMT</pubDate>
            <description><![CDATA[Soft magnetic composite materials consisting of FeSi powder and polypropylene were prepared by the injection molding method, with different polypropylene contents of 25, 30 and 35 vol. %. The magnetic and electrical properties as well as the structure of the composites were investigated. The samples exhibited very low porosity, high electrical resistivity, relatively low coercivity, sufficient saturation magnetic flux density and permeability, and high resonant frequency. FeSi particles were found to be well insulated from each other and homogeneously dispersed in the polymer matrix of the composite. The observed isotropic structure was confirmed by the fitting of the experimental dependence with the analytical expression of the reversible relative permeability vs. magnetic flux density.]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Synthesis of Fe-Based Alloy Reinforced with Chromium Carbide Via Sintering of Iron-Ferrochrome Powder Mixture]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2021-0003</link>
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            <pubDate>Wed, 13 Apr 2022 00:00:00 GMT</pubDate>
            <description><![CDATA[The results of the investigation of the structure, phase composition, and properties of the alloy sintered from a mixture of iron (65 %) and high-carbon ferrochrome (35 %) powders are presented in the article. It was shown that sintering of the consolidated specimens results in a substantially heterogeneous structure consisting of two predominant phases: austenitic phase and double ferrochrome carbide. A mechanism is proposed for the dissolution of ferrochrome particles in the iron matrix as follows: M7C3 → M3C (1000÷1150 ºС) → M7C3 (1200÷1250 ºС).]]></description>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[Announcements]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2020-0010</link>
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            <pubDate>Thu, 17 Mar 2022 00:00:00 GMT</pubDate>
            <category>ARTICLE</category>
        </item>
        <item>
            <title><![CDATA[X-ray Photoelectron Spectroscopy Study of Europium Niobate Thin Film Prepared by Chemical Solution Deposition]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2020-0009</link>
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            <pubDate>Thu, 17 Mar 2022 00:00:00 GMT</pubDate>
            <description><![CDATA[Transparent europium niobate EuNbO4 (ENOF) thin film (~100 nm) was prepared by sol-gel/spin-coating process on alumina substrates with PbZrO3 (PZ) interlayer and annealing at 1000°C. The X-ray diffraction (XRD) analyses verified the formation of the monoclinic M-EuNbO4 and tetragonal T-EuNb5O14 phases in ENO precursor and ENOF film. The surface morphology of powder precursor and microstructure of film were investigated by SEM analyses. Surface chemistry was investigated by X-ray photoelectron spectroscopy (XPS). The XPS demonstrated two valence states of Eu (Eu3+/Eu2+) in powder precursor as nanophosphor for lighting and display technologies. Eu concentration (at. %) decreases from 10 % in the precursor to 2 % in the film considering the substrate contains C, Al, Si, Pb, and Zr elements (40 %) at Nb (6 %) and O (52 %). The single valence state of Eu3+ was confirmed in ENO film designed for the application in environmental electrolytic thin-film devices.]]></description>
            <category>ARTICLE</category>
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        <item>
            <title><![CDATA[Sinter Hardening of Cr-Mo Pre-Alloyed Steels as a Function of the Carbon Content]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2020-0008</link>
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            <pubDate>Thu, 17 Mar 2022 00:00:00 GMT</pubDate>
            <description><![CDATA[Sinter hardening is a technique that is frequently employed in powder metallurgy parts production since it is an economical, clean, and environmentally friendly procedure. Since the cooling rates are however significantly lower than e.g. in water or oil quenching, alloy systems have to be used that ensure martensite formation already at moderate cooling rates. In the present study, quenching dilatometry was used to investigate the hardenability of two types of Cr pre-alloyed steels, Fe-3Cr-0.5Mo and Fe-1.5Cr-0.2Mo, the carbon content being varied, and sinter hardening diagrams were plotted. It showed that this parameter has a pronounced influence on the hardenability of the 3 % Cr alloy; in particular in the range 0.3…0.4 % combined C. For the lower alloyed system, in contrast, even 0.52 % combined C was insufficient to ensure martensite formation at the cooling rates typical for industrial sinter hardening. Finally, impact test specimens were prepared by sinter hardening at cooling rates typical for industry, and hardness, as well as impact energy, were determined.]]></description>
            <category>ARTICLE</category>
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        <item>
            <title><![CDATA[Powder Metallurgy Progress, an international open-access journal with 20 years of publishing history announces the Extension of the Journal`s Scope]]></title>
            <link>https://reference-global.com/article/10.2478/pmp-2020-0007</link>
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            <pubDate>Sat, 31 Jul 2021 00:00:00 GMT</pubDate>
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