Changes in magnetic domain structure of maraging steel studied by magnetic force microscopy

• Autorzy: Bramowicz M. , Kulesza S. , Mrozek G.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results on whether and how the magnetic domain structure in maraging steel undergoes any change due to the aging process. It continues the works on application of correlation methods and fractal analysis into studies of magnetic properties of various steel alloys using Scanning Probe Microscopy. It is aimed at verifying the usefulness of the structure function for description of spatial changes in shape and orientation of magnetic domains, and the magnitude of magnetic stray field affected by the heat treatment. Obtained results suggest that despite vanishing magnetic tip-surface interaction, and hence vanishing magnetic stray field, magnetic domains remain nearly perfectly isotropic although randomly oriented. Similar to isotropic real surfaces, the fractal dimension of the magnetic domains turns out to be independent of the structural changes induced by the aging process, whereas the topothesy is found to vary within order of magnitude along with changes in the magnetic stray field. After all, obtained results lead to conclusion that the aging process leaves its fingerprints in the structure of the steel alloys, which can be studied using numerical analysis of images of magnetic interactions between vibrating tip and the stray field.

Słowa kluczowe

EN

maraging steel; magnetic force microscopy; fractal analysis

• Wydawca: Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2014
• Tom: nr 17(4)
• Strony: 371--379
• Opis fizyczny: Bibliogr. 7 poz., rys., wykr.

Twórcy

autor

Bramowicz M.

• Chair of Materials and Machinery Technology, University of Warmia and Mazury in Olsztyn

autor

Kulesza S.

• Chair of Relativistic Physics, University of Warmia and Mazury in Olsztyn

autor

Mrozek G.

• Chair of Materials and Machinery Technology, University of Warmia and Mazury in Olsztyn

Bibliografia

• BOJARSKI Z., MATYJA P. 1983. Stale maraging - tworzywo narzędziowe. Prace naukowe Uniwersytetu Śląskiego w Katowicach, 589.
• BRAMOWICZ M., KULESZA S., CZAJA P., MAZIARZ W. 2014. Application of the autocorrelation function and fractal geometry methods for analysis of MFM images. Archives of Metallurgy and Materials, 59(2): 441-457.
• BRAMOWICZ M., KULESZA S. 2013. A Magnetic Force Microscopy Study of Magnetic Domain Structure in Maraging Steel. Solid State Phenomena, 203-204: 315-318.
• DOBRZAŃSKI L.A. 2002. Podstawy nauki o materiałach i metaloznawstwo. Wydawnictwo Naukowo--Techniczne, Warszawa.
• MAINSAH E., GREENWOOD J.A., CHETWYND D.G. 2001. Metrology and Properties of Engineering Surfaces. Kluwer Academic Publishers.
• SAYLES R., THOMAS T.R. 1978. Surface topography as a non-stationary random process. Nature, 271: 431-434.
• WU J.J. 2002. Analyses and simulation of anisotropic fractal surfaces. Chaos, Solitons and Fractals, 13: 1791-1806.