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    Wyświetlanie 1-4 z 4
    Tytuł:
    On some mechanical properties and wear behavior of sintered bronze based composites reinforced with some aluminides microadditives
    Autorzy:
    Feldshtein, E.
    Kiełek, P.
    Kiełek, T.
    Dyachkova, L.
    Letsko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/264685.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    metal matrix composites (MMCs)
    mechanical properties
    surface analysis
    wear
    właściwości mechaniczne
    analiza powierzchni
    zużycie
    Opis:
    In the paper, the changes in some mechanical properties and wear behavior of CuSn10 sintered bronze and MMCs based on this bronze reinforced with composite ultrafine aluminide powders FeAl/15 % Al2O3, NiAl/15 % Al2O3 and Ti-46Al-8Cr are described. It was observed that the presence of aluminides in the MMCs leads to an increase in the hardness, but the flexural strength may increase or decrease depending on the type of aluminide. The presence of aluminides in the MMC reduces the wear rate considerably. It is decreased in the direction of FeAl/15 % Al2O3 → NiAl/15 % Al2O3 → Ti-46Al-8Cr aluminides and for the best MMC composition the advantage is about 20 times. In the MMCs wear process, micro-craters are formed on the contact surface and it is the principal reason of a decrease in the wear rate.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2017, 22, 2; 293-302
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlations Between Arrangement of Reinforcing Particles and Mechanical Properties in Pressure Die Cast AlSi11-SiC Composites
    Autorzy:
    Konopka, Z.
    Pasieka, A.
    Łągiewka, M.
    Nadolski, M.
    Zyska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/380134.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pressure die casting
    metal matrix composites (MMCs)
    aluminium alloys
    structure
    mechanical properties
    odlewnictwo ciśnieniowe
    kompozyty metalowe (MMC)
    stopy aluminium
    struktura
    właściwości mechaniczne
    Opis:
    The work presents the investigation results concerning the structure of composite pressure die castings with AlSi11 alloy matrix reinforced with SiC particles. Examination has been held for composites containing 10 and 20 volume percent of SiC particles. The arrangement of the reinforcing particles within the matrix has been qualitatively assessed in specimens cut out of the castings. The index of distribution was determined on the basis of particle count in elementary measuring fields. The tensile strength, the yield point and elongation of the obtained composite were measured. Composite castings were produced at various values of the piston velocity in the second stage of injection, diverse intensification pressure values, and various injection gate width values. The regression equation describing the change of the considered arrangement particles index and mechanical properties were found as a function of the pressure die casting parameters. The infuence of particle arrangement in composite matrix on mechanical properties these material was examined and the functions of correlations between values were obtained. The conclusion gives the analysis and the interpretation of the obtained results.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 2; 31-36
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Hardening in Alloys and Composites and Its Examination with a Diffraction and Self-Consistent Model
    Autorzy:
    Gadalińska, E.
    Baczmański, A.
    Wroński, S.
    Wróbel, M.
    Scheffzük, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/97949.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    metal-matrix composites
    MMCs
    hardening
    micromechanics
    neutron diffraction
    Opis:
    The paper presents the results of diffraction stress measurement in Al/SiC composite and in 2124T6 aluminum alloy during the in situ tensile test. The main aim of the work is to observe the stress values for different stages of tensile test for the composite after applying two types of thermal treatment and for the alloy used as a matrix in this composite, to identify the type of hardening process. The experimental results were compared against the calculations results obtained from the self-consistent model developed by Baczmański [1] - [3] to gain the information about the micromechanical properties (critical resolved shear stress τcr and hardening parameter H) of the examined materials. This comparison allowed researchers to determine the role of reinforcement in the composite as well as the impact of the heat treatment on the hardening of the material.
    Źródło:
    Fatigue of Aircraft Structures; 2018, 10; 31-46
    2081-7738
    2300-7591
    Pojawia się w:
    Fatigue of Aircraft Structures
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wear Resistance of TiC Reinforced Cast Steel Matrix Composite
    Autorzy:
    Sobula, S.
    Olejnik, E.
    Tokarski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/381832.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kompozyty z osłoną metalową
    MMC
    kompozyt
    staliwo zbrojone TiC
    odporność na zużycie
    metal matrix composites
    MMCs
    composite casting
    reinforced cast steel
    wear resistance
    Opis:
    Wear resistance of TiC-cast steel metal matrix composite has been investigated. Composites were obtained with SHSB method known as SHS synthesis during casting. It has been shown the differences in wear between composite and base cast steel. The Miller slurry machine test were used to determine wear loss of the specimens. The slurry was composed of SiC and water. The worn surface of specimens after test, were studied by SEM. Experimental observation has shown that surface of composite zone is not homogenous and consist the matrix lakes. Microscopic observations revealed the long grooves with SiC particles indented in the base alloy area, and spalling pits in the composite area. Due to the presence of TiC carbides on composite layer, specimens with TiC reinforced cast steel exhibited higher abrasion resistance. The wear of TiC reinforced cast steel mechanism was initially by wearing of soft matrix and in second stage by polishing and spalling of TiC. Summary weight loss after 16hr test was 0,14÷0,23 g for composite specimens and 0,90 g for base steel.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 1; 143-146
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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