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    Wyświetlanie 1-3 z 3
    Tytuł:
    Magneto-Structural Anisotropy of Hard Milled Surface
    Autorzy:
    Mičietová, A.
    Uríček, J.
    Blažek, D.
    Neslušan, M.
    Kejzlar, P.
    Čilliková, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032778.pdf
    Data publikacji:
    2017-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.Ej
    Opis:
    This paper deals with investigation of hard milled surface as a surface undergoing severe plastic deformation at elevated temperatures. This surface exhibits quite remarkable magnetic anisotropy (expressed in term of the Barkhausen noise) and differs from ground surfaces. The main reason can be viewed in specific structure and the corresponding domains configuration formed during rapid cooling following after surface heating. Domains are not randomly but preferentially oriented in the direction of the cutting speed at the expense of feed direction. The Barkhausen noise signals (measured in two perpendicular directions such as cutting speed and feed direction) indicate that the mechanism of the Bloch wall motion during cyclic magnetization in hard milled surfaces differ from surfaces produced by grinding cycles or the raw surface after heat treatment.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 4; 1087-1089
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anisotropic Magnetic Properties of MilledBearing Steel Surface
    Autorzy:
    Mičica, M.
    Blažek, D.
    Hadzima, B.
    Pištora, J.
    Neslušan, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192261.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.50.Bb
    75.60.Ej
    78.20.Ls
    Opis:
    For many reasons, the steel surfaces are machined to obtain required physical properties. Suitable methods are required for the management and control of the manufacturing processes, which are simultaneously sufficiently robust and sensitive. The non-destructive testing methods, sensitive to the magnetic properties of the surface, are very suitable for this purpose. The Barkhausen noise (BN) measurement, which reveals the discontinuous movement of the magnetic domains in the thin surface layer during magnetisation reversal process is very robust, while magneto-optical Kerr effect (MOKE) method, using polarized light for orientation measurements of magnetic domains at the surface, is very sensitive and provides detailed information about hysteresis curves (HC) of the materials. In this contribution our results obtained on the milled 100Cr6 bearing steel are presented. These properties were obtained by MOKE laboratory measurements and bring very interesting facts about the magnetisation reversal process, which depends on the orientation of the magnetic field with respect to the cutting direction. Our results clarify the strong anisotropy of BN, which is observed during the industrial application of this method.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1421-1423
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic Evaluation of Residual Stresses and Structure Transformations Induced in Soft Steel after Turning
    Autorzy:
    Čilliková, M.
    Dubec, J.
    Neslušan, M.
    Mičietová, A.
    Blažek, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1199710.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.60.Ej
    Opis:
    This paper deals with the stress and temperature induced microstructure transformations in a soft bearing steel 100Cr6 after turning operation. Investigation is carried out through a technique based on Barkhausen effect. Evaluation of surface integrity via structure transformations, X-ray diffraction as well as microhardness inspection is carried out as well. Surface integrity is investigated with the respect to the variable tool wears and consequent mechanical and thermal loads applied on the inspected surfaces. Different surface microstructures caused by the mechanical and associated thermal aspects of the surface formation are discussed and correlated with the parameters obtained from the measured Barkhausen emissions.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 60-61
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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