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    Wyświetlanie 1-9 z 9
    Tytuł:
    Influence of Single-Stage and Duplex Shot Peening on Surface Roughness and Residual Stresses in Al Mg5 Mn1 Sc0,8 Zr0,4 Alloy
    Autorzy:
    Byczkowska, P.
    Sawicki, J.
    Januszewicz, B.
    Stegliński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/353741.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    shot peening
    double shot peening
    residual stresses
    roughness
    Opis:
    Conventional shot peening (SP) is cheap surface treatment widely used to enhance fatigue life of mechanical components [3,4]. Basically, it is shooting small particles (shots) on the surface of the sample. However, the process itself is so complex that a lot of companies are not able to optimally employ it due to the amount of parameters that must be controlled all at the same time. The duplex process consists in two stages of shot-peening treatment. The first one consist of shot-peening with spherical cast steel shots or cut wire shots. During the second stage the samples processed in stage one were subject to shot-peening with glass beads. In this work, RSA-501 aluminium alloy was shot peened using shots of different material and diameter and tested using a measurement of residual stresses and surface roughness. Tests and studies conducted so far on RSA-501 aluminium alloy demonstrate that bombardment by a treatment medium in the form of glass beads or shots of various shapes and diameters induces permanent plastic deformation of the surface layer. The roughness achieved after the shot-peening process was determined for each treatment medium. The largest value of Ra parameter was achieved for cut wire shots and this result is consistent with the above-mentioned theoretical knowledge. This medium is the most aggressive one to the surface being treated primarily due to the sharp edges of shots. The duplex process was successful in obtaining higher values of compressive stresses in surface layer than values achievable in conventional single-stage shot peening process.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 505-511
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Shot Peening on Abrasion Wear in Real Conditions of Ni-Cu-Ausferritic Ductile Iron
    Autorzy:
    Wieczorek, A. N.
    Powiązania:
    https://bibliotekanauki.pl/articles/350866.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ADI
    shot peening
    wear
    abrasion
    Opis:
    The paper presents results of the wear tests of chain wheels made of austempered ductile iron with various content of residual austenite. The aim of this study was to demonstrate the impact of the dynamic surface treatment (shot peening) on wear properties of surface layers of the chain wheels tested that were subjected to the action of quartz abrasive. Apart from determining the value of the abrasive wear, examinations of the magnetic phase content in the microstructure were carried out and plots of hardness of the surface layer as a function of the distance from the surface and microstructure of the materials were prepared. Based on the results, the following was found: an increase in the abrasive wear and a reduction in the hardness of the surface layer of chain wheels subjected to shot peening, as well as reduction of susceptibility to negative action of the shot for cast irons with the structure of upper ausferrite.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 1985-1990
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of the Shot Peening on Surface Properties and Tribological Performance of Ti-6Al-4V Alloy Produced by Means of DMLS Technology
    Autorzy:
    Żebrowski, R.
    Walczak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/351652.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    additive manufacturing
    shot peening
    titanium alloys
    wear
    tribology
    Opis:
    The purpose of the present paper was to investigate the effect of shot peening on the condition of the surface layer and abrasion resistance of specimens made of Ti-6Al-4V titanium alloy produced by Direct Metal Laser Sintering (DMLS) process. The specimens have been produced by means of EOSINT M280 system dedicated for laser sintering of metal powders and their surfaces have been subjected to the shot peening process under three different working pressures (0.2, 0.3 and 0.4 MPa) and by means of three different media i.e. CrNi steel shot, crushed nut shells and ceramic balls. The specimens have been subjected to profilometric analysis, to SEM examinations, microhardness tests and to tribological tests on ball-on-disc stand in Ringer fluid environment. The general results of all tests indicate to favourable effect of shot peening process on the hardness and tribological performance of titanium alloy.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 377-386
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Operation-Oriented Studies on Wear Properties of Surface-Hardened Alloy Cast Steels Used in Mining in the Conditions of the Combined Action of Dynamic Forces and an Abrasive Material
    Autorzy:
    Wieczorek, A. N.
    Powiązania:
    https://bibliotekanauki.pl/articles/356119.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steel cast
    dynamic force
    synergism
    wear
    shot-peening
    Opis:
    This paper presents the results of wear tests of shot-peened and not shot-peened cast steels used in the mining machinery industry, in particular in the construction of chain drums for armoured face conveyors. Wear tests were carried out in the conditions corresponding to the real operating conditions of armoured face conveyors during drifting work in rocks such as sandstone. The operating factors subjected to the analyses included the presence of quartz abrasive and the impact of external dynamic forces. On the basis of the wear tests as well as the microhardness and microstructure examinations performed, it has been found that the action of an additional dynamic force has a synergistic impact on the process of abrasive wear in loose quartz abrasive. It has been further found that the value of abrasive wear of chain wheels operated in the conditions of a combined action of abrasive and a dynamic force depends on whether the area of mating of wheels with the chain was shot-peened or not before the wear tests – an increase in the abrasive wear was observed for the wheels made of cast steel subjected to shot peening in the area of mating with the chain. Lower resistance to abrasive wear of the cast steels subjected to shot peening before the wear tests could result from the formation of cracks in the surface layer caused by the action of shot.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 4; 2381-2389
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Shot Peening on the Fatigue Strength of Automotive Tubular Stabilizer Bars DC 218
    Autorzy:
    Wittek, A. M.
    Gąska, D.
    Łazarz, B.
    Matyja, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/353092.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    shot-peening
    residual stresses
    fatigue
    finite element method
    Opis:
    This paper concerns issues related to the development of designs of stabilizer bars for new motor vehicle models. It involves not only the designing of a stabilizer bar with the shape required by the manufacturer, but also the preparation of bending and heat treatment processes as well as the performance of strength and fatigue tests. In the prototype development phase, the simulations techniques (FEM) may be used to assess the design. The article contains a detailed analysis of a stabilizer bar designated with the DC 218 VA symbol. Performed numerical strength and fatigue calculations showed that the developed stabilizer bar design with the desired shape did not achieve the required number of fatigue cycles. It was also proven at the test stand by testing a prototype stabilizer bar. Therefore, it was suggested to supplement the technological process with an additional shot peening operation whose main aim was to reduce the length of microcracks on the stabilizer bar’s surface. This effect was confirmed during comparative metallographic tests of not shot – peened and shot – peened stabilizer bars. After shot peening, the analysed stabilizer bar reached a fatigue strength which exceeded the limits set by the manufacturer.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 4; 1963-1968
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Shot Peening With Glass Microspheres on the Fatigue Behavior of a Low Carbon Steel
    Autorzy:
    de Lacerda, J. C.
    Pereira, I. R.
    Costa, J. M. G.
    Pinto, J. S.
    Souza, H. F. M.
    Fonseca, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/352156.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fatigue
    shot peening
    Wöhler curve
    low carbon steel
    glass microspheres
    Opis:
    The present work has the objective of studying the effect of shot peening with glass microspheres on SAE 1020 steel in its resistance to fatigue. Fatigue tests were carried out by rotary bending with load control and loading on balance in specimens with and without shot peening. A rotation speed of approximately 750 rpm (12.5 Hz) was employed in the fatigue tests. Vickers microhardness tests were performed in order to verify the surface hardening produced by shot peening with glass microspheres. Analysis of the steel surface and fatigue fractures was performed using scanning electron microscopy (SEM). Fatigue tests were performed in order to obtain S-N curves (Wöhler curves). It was observed that shot peening with glass microspheres improved the fatigue strength of the steel at high cycle.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 4; 1513-1518
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synergy of the Plastic Treatment HPT and Shot Peening in Aluminium Alloy Al-Mg-Mn-Sc-Zr
    Autorzy:
    Stegliński, M.
    Byczkowska, P.
    Sawicki, J.
    Kaczmarek, Ł.
    Januszewicz, B.
    Klich, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/355364.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    high-pressure torsion
    shot peening
    numerical analysis
    residual stresses
    fatigue strength
    Opis:
    An improvement in fatigue strength is one of the main factors enabling the use of high-durability Al-Mg-Mn-Sc-Zr alloys in functional components of mobile robots. As part of this study, a computer simulation was carried out using ANSYS LS-DYNA software that involved the hybridization of high pressure torsion (HPT) and shot peening (SP) forming processes. The numerical analysis was aimed at determining residual stresses and strains that affect the durability and stress characteristics of the analyzed Al alloy. Results of the study indicate that tensile stresses of σ = 300 MPa generated as a result of HPT are transformed into a beneficial stress of σ = 25 MPa resulting from plastic strains caused by SP surface treatment.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2B; 1135-1142
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Two-Stage Age Hardening Treatment Combined with Shot Peening on Stress Distribution in the Surface Layer Of 7075 Aluminum Alloy
    Wpływ dwuetapowego procesu starzenia połączonego z kulowaniem na rozkład naprężeń w warstwie wierzchniej stopu aluminium 7075
    Autorzy:
    Kaczmarek, Ł.
    Zawadzki, P.
    Stegliński, M.
    Wójcik, R.
    Klich, M.
    Kyzioł, K.
    Kottfer, D.
    Januszewicz, J.
    Pawłowski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/356022.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum
    heat treatment
    multi stage
    shot peening
    residual stress
    aluminium
    obróbka cieplna
    starzenie dwuetapowe
    śrutowanie
    naprężenie ściskające
    Opis:
    The article present the results of the study on the improvement of mechanical properties of the surface layer of 7075 aluminum alloy via two-stage aging combined with shot peening. The experiments proved that thermo-mechanical treatment may significantly improve hardness and stress distribution in the surface layer. Compressive stresses of 226 MPa±5.5 MPa and hardness of 210±2 HV were obtained for selected samples.
    W ramach niniejszego artykułu przedstawiono wyniki badań dotyczące poprawy właściwości mechanicznych warstwy wierzchniej w stopie aluminium 7075 poprzez kombinacje starzenia dwuetapowego i kulowania. Dowiedziono w ramach prowadzonych badań, że istnieje możliwość znacznego poprawienia twardości oraz rozkładu naprężeń w warstwie wierzchniej stosując obróbkę cieplno-plastyczną. Dla wybranych próbek uzyskiwano naprężenia ściskające na poziomie 226MPa±5,5 MPa oraz twardość rzędu 210±2 HV.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 3A; 1993-1997
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of shot peening and NiAl coating on fatigue limit of Mg-Al-Zn-Mn alloy
    Wpływ parametrów śrutowania oraz osadzenia powłoki NiAl na właściwości zmęczeniowe stopu Mg-Al-Zn-Mn
    Autorzy:
    Mrva, P.
    Kottfe, D.
    Kaczmarek, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/351589.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wytrzymałość zmęczeniowa
    krzywe S-N
    śrutowanie
    obciążenie cykliczne
    fatigue strength
    high cycle fatigue
    S-N curves
    shot peening
    Opis:
    The paper deals with an influence of cylic load on fatigue limit of the Mg-Al-Zn-Mn alloy without or with the NiAl coating. The fatigue limit was determined for the following three types of specimens of the Mg-Al-Zn-Mn alloy: (1) fine-turned specimens; (2) fine-turned specimens with an application of the shot peening process; (3) fine-turned and shot-peened specimens with the NiAl coating deposited by the thermal spraying technique. A standard measurement of the fatigue limit was used for the analytical determination of the Wohler curves (S-N curves). The Wohler curves for the specimens (1) and (3) were in agreement with those presented in literature. The specimens (2) exhibited a lower value of the fatigue limit compared with that of the specimens (1), although the increase of the fatigue limit of the specimens (2) was expected due to the presence of the application of the shot peening process. An analysis of reasons of the decrease of the fatigue limit of the specimens (2) is presented.
    W niniejszym artykule przedstawiono wyniki badań obciążenia cyklicznego na wytrzymałość zmęczeniową na zginanie stopu Mg-Al-Zn-Mn bez lub z naniesioną powłoką NiAl. Badaniu poddano trzy typy próbek wykonanych ze stopu Mg-Al-Zn-Mn: (1) próbki bez modyfikacji powierzchniowej; (2) próbki poddane procesowi śrutowania; (3) próbki poddane procesowi śrutowania wraz z późniejszym naniesieniem powłoki NiAl metodą natryskiwania cieplnego. Uzyskane wyniki zobrazowane na krzywych Wohler'a dla próbek grupy (1) i (3) są zgodne z danymi zawartymi w literaturze. W przypadku natomiast próbek grupy (2) mimo, iż zostały poddane śrutowaniu charakteryzują się niższą wytrzymałością zmęczeniową w porównaniu do próbek nie poddanych modyfikacji powierzchniowej - grupa (1). W niniejszym artykule podjęto również próbę wyjaśnienia obniżenia się właściwości zmęczeniowych próbek poddanych śrutowaniu.
    Źródło:
    Archives of Metallurgy and Materials; 2011, 56, 3; 743-748
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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