Thermal stability and GFA parameters of Fe-Co-based bulk metallic glasses

• Autorzy: Nowosielski R. , Januszka A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper present fabrication process, structure characterization and selected thermal properties of Fe-Co-based bulk metallic glasses in form of rods. Additionally selected GFA parameters were determined. Design/methodology/approach: The studies were realized on Fe₃₆Co₃₆B_19.2Si_4.8Nb₄ metallic glasses in form of rods with diameter of 0=1.5, ø=2 and ø=3 mm. Samples were performed by the pressure die casting method. An amorphous structure was confirmed by the X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods. The thermal properties of the studied samples were examined by differential scanning calorimetry (DSC). GFA parameters were calculated based on thermal properties. Findings: The X-ray analysis and scanning microscopy observation revealed that the studies as-cast rods were amorphous. For each sample broad diffraction halo could be observed. That diffraction pattern confirm formation of glassy phase in studied samples. Practical implications: Fe-Co-based bulk metallic glasses could be used in many practical application. For the sake of great mechanical, thermal and magnetic properties they may be used as a structural material and in many electric and magnetic applications (for example soft electro-magnetic cores). Knowledge about thermal properties could be useful in computer simulation of metallic glasses casting process. Originality/value: The obtained examination results allow to confirm the utility of investigation methods, which has used in this work. Thermal analysis allow to determinate selected GFA parameters for selected Fe-Co-based alloy.

Słowa kluczowe

EN

amorphous materials; bulk metallic glasses; Fe-based alloys; thermal properties

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2011
• Tom: Vol. 48, nr 2
• Strony: 161--168
• Opis fizyczny: Bibliogr. 35 poz., rys., tab.

Twórcy

autor

Nowosielski R.

• Division of Nanocrystalline and Functional Materials and Sustainable Pro-ecological Technologies, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Januszka A.

• Division of Nanocrystalline and Functional Materials and Sustainable Pro-ecological Technologies, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

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