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    Wyświetlanie 1-4 z 4
    Tytuł:
    Wear Properties of the Surface Alloyed AISI 1020 Steel with Vanadium and Boron by TIG Welding Technique
    Autorzy:
    Abakay, E.
    Sen, S.
    Sen, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/1215751.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.77.Fv
    81.40.Cd
    81.40.Ef
    81.05.Je
    81.40.-z
    81.40.Pq
    Opis:
    It is now well known that surface alloying caused improvement in the mechanical/chemical properties of near surface regions of materials. In the present study, surface alloying treatment with boron, vanadium and iron on the AISI 1020 steel was realized by the technique of TIG welding. Ferrous boron, ferrous vanadium and Armco iron were used for surface alloying treatment. Before the treatment, ferrous alloys were ground and sieved to be smaller than 38 μm. The powders were mixed to be composed of $Fe_{15 - x}V_{x}B_5$, where x = 1, 3, and 5 (by at.). Prepared powders were pressed on the steel substrate and melted by TIG welding for surface alloying. Coated layers formed on the steel substrate were investigated using scanning electron microscopy, X-ray diffraction analysis and Vickers microhardness testers. It was shown that the surface alloyed layer has a composite structure including steel matrix and eutectic borides. Wear tests of the surface alloyed AISI 1020 steels were realized against WC-Co ball using ball-on-disk method.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 251-253
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wear Properties of the Surface Alloyed AISI 1020 Steel with $Fe_{(15-x)}Mo_{x}B_5$ by TIG Welding Technique
    Autorzy:
    Abakay, E.
    Sen, S.
    Sen, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/1292921.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.40.Cd
    81.40.Ef
    52.77.Fv
    81.05.Je
    81.40.Pq
    Opis:
    Surface alloying caused the improvement in the mechanical/chemical properties of near surface regions of the steels. In the present study, surface alloying treatment with boron, molybdenum, and iron on the AISI 1020 steel was realized by the technique of TIG welding. Ferrous boron, ferrous molybdenum, and Armco iron were used for surface alloying treatment. Before the treatment, ferrous alloys were ground and sieved to be smaller than 45 μm. The powders were mixed to be composed of $Fe_{(15-x)}Mo_{x}B_5$, where x = 1, 3, and 5 (by at.%). Prepared powders were pressed on the steel substrate and melted by TIG welding for surface alloying. Wear tests of the surface alloyed AISI 1020 steels were realized against WC-Co ball using by ball-on-disk method under the loads of 2.5, 5, and 10 N at the sliding speeds of 0.1 m/s for 250 m sliding distance. Friction coefficient and wear rates of the surface alloyed steel with $Fe_{(15-x)}Mo_{x}B_5$ alloy powder are changing between 0.30 and 0.80 and 5.86 × $10^{-5} mm^3$/m to 2.52 × $10^{-3} mm^3$/m depending on applied load and alloy composition, respectively.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 587-589
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wear Properties of TIG Surface Alloyed Steel with 50%Fe-10%W-40%B Alloy
    Autorzy:
    Abakay, E.
    Kilinc, B.
    Sen, S.
    Sen, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401223.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Vj
    81.05.Bx
    81.40.Pq
    81.65.Lp
    Opis:
    In the present study, AISI 1020 plain carbon steel was surface alloyed with preplaced 50%Fe-10%W-40%B alloying powders using a tungsten-inert gas (TIG) heat source. Microstructure, hardness, and wear resistance of the surface alloyed layer were investigated. Following the surface alloying, conventional characterization techniques such as optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction analysis (XRD) were used to study the phase and microstructural examinations of the alloyed surfaces. Hardness measurements were performed across the alloyed zones, and wear properties of the alloyed surfaces were evaluated using a ball-on-disc wear test method. Hardness values of the phases formed in the alloyed layer are changing between 620±30 $HV_{0.1}$ and 2095±254 $HV_{0.1}$. The major phases formed in the surface alloyed layer were Fe₂B, FeB and FeW₂B₂. Wear test were realized against Alumina ball under the loads of 2.5 N, 5 N and 10 N at the sliding speed of 0.1 m/s for 250 m sliding distance. The friction coefficient of the 50%Fe-10%W-40%B alloyed steel surface is changing between 0.70 and 0.79 depending on applied loads. The wear rates of the surface alloyed steel ranged from $4.01 \times 10^{-5}$ mm³/m to $4.14 \times 10^{-4}$ mm³/m.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 957-960
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tribological Behaviors of $SiO_2$ Added Polyester Matrix Thermosetting Composites
    Autorzy:
    Akinci, A.
    Ozsoy, M.
    Firat, M.
    Sen, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/1291866.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Qk
    12.60.Rc
    81.40.Pq
    Opis:
    In this study, the tribological behavior of polyester matrix composites filled with silicon dioxide ($SiO_2$) particles is investigated. The tribological characteristics of pure polyester and 10, 20, 30 and 40 wt% $SiO_2$ filled polyester composites were comparatively evaluated under dry sliding conditions. Wear tests were carried out at room temperature under the loads of 10, 20, and 30 N at the sliding speed of 1 m/s. The wear test results showed that the $SiO_2$ particles could improve the wear resistance. The friction coefficient of the polyester was getting increased from 0.228 to 1.1052 with an increase in $SiO_2$ content depending on applied loads. The results showed that the wear rates of pure polyester and $SiO_2$ filled polyester composites increased with increase in loads. The wear rates of the $SiO_2$ filled polyester composites were significantly affected from the $SiO_2$ content. The wear rate of the polyester changed from 8.0 × $10^{-7}$ $mm^3$/m to 1.72 × $10^{-5}$ $mm^3$/m depending on $SiO_2$ contents and applied loads.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 560-562
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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