Structure and density of Fe₃₆Co₃₆B_19.2Si_4.8Nb₄ bulk glassy alloy

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

Abstrakty

EN

Purpose: The work presents density measurements of bulk metallic glasses in as-cast state. Additionally casting method and structure characterization was displayed. Design/methodology/approach: The studies were performed on Fe₃₆Co₃₆B_19.2Si_4.8Nb₄ metallic glasses in form of rods with diameter 2 and 3 mm. Samples were fabricated using copper mould casting method. The master alloy characteristic temperatures (T_m - melting point and T₁ - liquidus temperature) were determinate by differential thermal analysis (DTA). The structure was characterized by X-ray (XRD) method and scanning electron microscope (SEM). The densities of metallic glassy rods have been measured by using the Archimedes principle. Findings: The XRD and SEM investigations revealed that the studied samples in form of rods were amorphous. Broad diffraction “halo” was observed for every testing piece. Fracture observation confirmed glassy state of samples. Archimedes principle allows calculating density of tested sample. Practical implications: The FeCo-based bulk metallic glasses have attracted great interest for a variety application fields for example electric applications, precision machinery materials or structural materials. Metallic glasses exhibit higher density than their crystalline counterparts and could be apply as a satisfactory structural material. Originality/value: The obtained results confirm the utility of applied investigation methods in the thermal and structure analysis of examined amorphous alloys. Density of metallic glasses is important properties which influence on specific application these materials. This materials offer attractive qualities, combining some of the desirable properties of conventional crystalline metals and the formability of conventional oxide glasses.

Słowa kluczowe

EN

amorphous materials; bulk metallic glasses; copper mould casting; density; archimedes principle

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 52, nr 2
• Strony: 67--74
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

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

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

Bibliografia

• [1] H.W. Wang, C. Dong, C.H. Shek, Bulk metallic glasses, Materials Science and Engineering 44 (2004) 45-89.
• [2] D.B. Miracle, W.S. Sanders, The influence of efficient atomic packing on the constitution of metallic glasses, Philosophical Magazine 83/20 (2003) 2409-2428.
• [3] R. Nowosielski, R. Babilas, Preparation, structure and properties of Fe-based bulk metallic glasses, Journal of Achievements in Materials and Manufacturing Engineering 40/2 (2010) 123-130.
• [4] R. Nowosielski, A. Januszka, Influence of nickel on structure and hardness of Fe-Co bulk metallic glasses, Journal of Achievements in Materials and Manufacturing Engineering 38/1 (2010) 15-23.
• [5] S. Lesz, Preparation of Fe-Co-based bulk amorphous alloy from high purity and industrial raw materials, Archives of Materials Science and Engineering 48/2 (2011) 77-88.
• [6] A. Inoue, Bulk amorphous and nanocrystalline alloys with high functional properties, Materials Science and Engineering A 304-306 (2001) 1-10.
• [7] Y. Li, S.J. Poon, G.J. Shiflet, J. Xu, D.H. Kim, J.F. Loffler, Formation of bulk metallic glasses and their composites, MRS Bulletin 32 (2007) 624-628.
• [8] R. Nowosielski, A. Januszka, Thermal stability and GFA parameters of Fe-Co-based bulk metallic glasses, Journal of Achievements in Materials and Manufacturing Engineering 48/2 (2011) 161-168.
• [9] Q. Hu, X.R. Zeng, M.W. Fu, Characteristic free volume change of bulk metallic glasses, Journal of Applied Physics 111/8 (2012) 083523-083523-9.
• [10] S.F. Guo, L. Liu, N. Li, Y. Li, Fe-based bulk metallic glass matrix composite with large plasticity, Scripta Materialia 62 (2010) 329-332.
• [11] R. Babilas, R. Nowosielski, Iron-based bulk amorphous alloys, Archives of Materials Science and Engineering 44/1 (2010) 5-27.
• [12] A. Inoue, B.L. Shen, C.T. Chang, Fe- and Co-based bulk glassy alloys with ultrahigh strength of over 4000 MPa, Intermetallics 14 (2006) 936-944.
• [13] T. Kulik, Formation and magnetic properties of Co- Fe-based bulk metallic glasses with supercooled liquid region, Journal of Magnetism and Magnetic Materials 299 (2006) 492-495.
• [14] C. Suryanarayana, I. Seki, A. Inoue, A critical analysis of the glass-forming ability alloys, Journal of Non-Crystalline Solids 355 (2009) 355-360.
• [15] Ch. Chang, B. Shen, A. Inoue, Synthesis of bulk glassy alloys in the (Fe,Co,Ni)-B-Si-Nb system, Materials Science and Engineering A 449-451 (2007) 239-242.
• [16] C. Suryanarayana, A. Inoue, Bulk metallic glasses, CRC Press, 2011.
• [17] J. Zbroszczyk, Amorphous and nanocrystalline Fe-alloys, Czestochowa University of Technology Press, 2007 (in Polish).