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Browsing by Subject "ferromagnetyk"

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  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Badania wpływu procesu zmęczenia na właściwości elektromagnetyczne stali ferromagnetycznych.
    (Data obrony: 2021-01-27) Górecki, Kamil
    Wydział Inżynierii Mechanicznej i Robotyki
  • thumbnail.journal.alt
    Item type:Thesis, Access status: Restricted ,
    Badania wpływu wytężenia na zmiany własnego magnetycznego pola rozproszenia stali S235
    (Data obrony: 2020-10-27) Pisarek, Maciej
    Wydział Inżynierii Mechanicznej i Robotyki
  • thumbnail.journal.alt
    Item type:Doctoral Dissertation, Access status: Restricted ,
    Określanie składu fazowego metali i stopów z wykorzystaniem zmiennego pola magnetycznego
    (Data obrony: 2010) Tyrała, Edward
    Wydział Odlewnictwa
    The aim of the thesis was the application of the changeable magnetic field to investigate the composition of phases present in the metals and alloys. Ali experiments were performed on Fe-Cu alloy Austempered Ductile Iron (ADI). In order to make a study in the changeable magnetic field a prototype apparatus was performed. The magnetic coupling of alloy (Ps) was measured in the reversible range of magnetic field. The samples of Fe-Cu alloy have contained the different volume fraction of phases components. The linear dependence between the magnetic coupling and the volume fraction of phases components was observed. This observation can be used to estimate the quantitative phase composition in a biphase alloys. However, the magnetic coupling both phases must be different. The phases composition of ADI at different austempering time was investigated by metallographic, XRD, magnetic coupling and dilatometric measurements. The microstructure of ADI at whole austempering time contains at least three phases. In this case the value of austenite volume fraction can be estimated by magnetic coupling. The significant result of the thesis is performance of apparatus which allows to measure the electromagnetic parameter of alloy in the reversible magnetic field. In this work the linear dependence between magnetic coupling and volume fraction of phase components (ferro- and paramagnetic properties) was revealed.