Investigation of the structure and properties of Fe-Co-B-Si-Nb bulk amorphous alloy obtained by pressure die casting method

• Autorzy: Pilarczyk W. , Nowosielski R. , Babilas R. , Sakiewicz P. , Pilarczyk A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The main aim of this paper is investigation of the microstructure and thermal properties of selected Fe-Co-B-Si-Nb bulk amorphous alloy. Design/methodology/approach: The studies were performed on Fe-Co-B-Si-Nb alloy in form of rods with diameter of ø0=1.5 and ø=2 mm. Master alloy ingot with compositions of Fe_37.44Co_34.56B_19.2Si_4.8Nb₄ was prepared by induction melting of pure Fe, Co, B, Si and Nb elements in argon atmosphere. The structure analysis of the studied materials in as-cast state was carried out using X-ray diffraction (XRD). The thermal properties: glass transition temperature (Tg), onset crystallization temperature (Tx) and peak crystallization temperature (Tp) of the as-cast alloys were examined by differential scanning calorimetry (DSC) method. The microscopic observation of the fracture morphology of studied amorphous materials in rods form with different diameter was carried out by means of scanning electron microscope (SEM), within different magnification. Findings: The Fe-based bulk metallic glasses in form of rod were successfully produced by die pressure casting method. The investigation revealed that the studied rods are amorphous. These materials exhibit good glass-forming ability. These tested rods with diameter of 1.5 and 2 mm exhibit similar characteristic temperatures (Tg, Tx, Tp). The exothermic peaks describing crystallization process of studied bulk metallic glasses are observed Morphology of cross section rods is changing having contact with copper mould during casting from smooth fracture inside rod to fine narrow dense veins pattern near to rod surface. These rods have smooth surface and metallic luster. The presented fractures are characteristic for metallic glasses. Practical implications: The success of production of studied Fe-based bulk metallic glasses is important for future practical application of those materials as elements of magnetic circuits, sensors and precise current transformers. Originality/value: The success formation and investigation of the casted Fe-based bulk metallic glasses. The chemical composition of Fe_37.44Co_34.56B_19.2Si_4.8Nb₄ alloy in form of rod were tested first time.

Słowa kluczowe

EN

metallic glasses; Bulk Metallic Glasses; glass forming ability; Fe-based alloy

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 55, nr 2
• Strony: 363--367
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Pilarczyk W.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Nowosielski R.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Babilas R.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Sakiewicz P.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Pilarczyk A.

• The Institute of Welding, ul. Bł. Czesława 18a, 44-100 Gliwice, Poland

Bibliografia

• [1] B. Shen, Ch. Chang, A. Inoue, Formation, ductile deformation behavior and soft-magnetic properties of (Fe,Co,Ni)-B-Si-Nb bulk glassy alloys, Intermetallics 15 (2007) 9-16.
• [2] W. Pilarczyk, A. Mucha, The influence of yttrium addition on the GFA of selected iron-based BMG, Archives of Materials Science and Engineering 44/2 (2010) 87-95.
• [3] Q. Chen, J. Shen, D. Zhang, H. Fan, J. Sun, D.G. McCartney, A new criterion for evaluating the glass-forming ability of bulk metallic glasses, Materials Science and Engineering A 433 (2006) 155-160.
• [4] S.J. Pang, T. Zhang, K. Asami, A. Inoue, Synthesis of Fe-Cr-Mo-C-B-P bulk metallic glasses with high corrosion resistance, Acta Materialia 50 (2002) 489-497.
• [5] A. Inoue, Bulk amorphous and nanocrystalline alloys with high functional properties, Materials Science and Engineering A 304-306 (2001) 1-10.
• [6] S.J. Pang, T. Zhang, K. Asami, A. Inoue, Bulk glassy Fe-Cr-Mo-C-B alloys with high corrosion resistance, Corrosion Science 44 (2002) 1847-1856.
• [7] F. Jia, W. Zhang, X. Zhang, G. Xi, H. Kimura, A. Makino, A. Inoue, Effect of Co concentration on thermal stability and magnetic properties of (Fe,Co)-Nb-Gd-B glassy alloys, Journal of Alloys and Compounds 504S (2010) S129-S131.
• [8] A. Inoue, B. L. Shen, C.T. Chang, Super-high strength of over 4000 MPa for Fe-based bulk glassy alloys in [(Fe1.xCox)0 75Bo2Sio5]96Nb4 system, Acta Materialia 52 (2004) 4093-4099.
• [9] A. Inoue, A. Takeuchi, Recent progress in bulk glassy, nanoquasicrystalline and nanocrystalline alloys, Materials Science and Engineering A 375-377 (2004) 16-30.
• [10] 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.
• [11] C. Suryanarayana, A. Inoue, Bulk metallic glasses, CRC Press, Taylor and Francis Group, Boca Raton, London, New York, 2011.
• [12] W. Pilarczyk, The study of glass forming ability of Fe-based alloy for welding processes, Journal of Achievements in Materials and Manufacturing Engineering 52/2 (2012) 83-90.
• [13] W. Pilarczyk, J. Podwórny, The study of local structure of amorphous Fe-Co-B-Si-Nb alloy atomic pair distribution function, Proceedings of XXII Conference on “Applied Crystallography” CAC’2012, Targanice, 2012, 114.
• [14] W. Pilarczyk, R. Nowosielski, A. Januszka, Structure and properties Fe-Cr-Mo-C bulk metallic glasses obtained by die casting method, Journal of Achievements in Materials and Manufacturing Engineering 42 (2010) 81-87.