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Specific heat investigation of bulk metallic glasses

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Wybrane pełne teksty z tego czasopisma
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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: The aim of the paper is measurements and analysis of specific heat (Cp) of bulk metallic glasses. The fabrication method and structure analysis were also described. Design/methodology/approach: The studies were carried out on FeCo-based glassy test pieces with the following composition: Fe36Co36B19.2Si4. Samples in form of rods were prepared by copper mould casting method. The structure was tested by X-ray diffraction method and scanning electron microscope observation (SEM). For determination of thermal properties the DTA and DSC method were used. Specific heat of amorphous samples was investigated by calorimetric method. Findings: The X-ray diffraction revealed that fabricated samples exhibit glassy structure. Broad diffraction halo could be seen for each tested sample. SEM observations show that fracture morphology is changed on the diameter of samples. Thermal analysis allows assigning liquidus temperature (Tl). On the base of DSC curves glass transition temperature (Tg) and crystallization temperature (Tx) were determinate. Specific heat investigation show insignificant changes in temperature range from 30 K to Tg. Practical implications: Bulk glassy FeCo-based alloys which are fabricated by rapidly solidifying technique are very interesting engineering materials because of its unique mechanical and magnetic properties. They could be used in many applications. Specific heat is important in solidification process. This property is significant input-data in computer simulation of solidification process. Originality/value: It is important to investigate thermal properties of bulk metallic glasses (including Cp) in order to understand mechanism of structural relaxation, glass transition and crystallization sequences.
Rocznik
Strony
144--151
Opis fizyczny
Bibliogr. 22 poz.
Twórcy
autor
  • 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] R. Zallen, The physics of amorphous solids, Publishing House PWN, Warsaw, 1994 (in Polish).
  • [2] W. Pilarczyk, R. Nowosielski, R. Babilas, P. Sakiewicz, A. Pilarczyk, Investigation of the structure and properties of Fe-Co-B-Si-Nb bulk amorphous alloy obtained by pressure die casting method, Journal of Achievements in Materials and Manufacturing Engineering 55/2 (2012) 363-367.
  • [3] R. Nowosielski, A. Januszka, R. Babilas, Thermal properties of Fe-based bulk metallic glasses, Journal of Achievements in Materials and Manufacturing Engineering 55/2 (2012) 349-354.
  • [4] R. Babilas, R. Nowosielski, Iron-based bulk amorphous alloys, Archives of Materials Science and Engineering 44/1 (2010) 5-27.
  • [5] A. Januszka, R. Nowosielski, Structure and density of Fe36Co36B19.2Si4.8Nb4 bulk glassy alloy, Journal of Achievements in Materials and Manufacturing Engineering 52/2 (2012) 67-74.
  • [6] 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.
  • [7] C. Suryanarayana, A. Inoue, Bulk metallic glasses, CRC Press, 2011.
  • [8] 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.
  • [9] R. Nowosielski, R. Babilas, A. Guwer, A. Gawlas-Mucha, A. Borowski, Fabrication of Mg65Cu25Y10 bulk metallic glasses, Archives of Materials Science and Engineering 53/2 (2012) 77-84. [10] 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.
  • [11] A. Inoue, Bulk amorphous and nanocrystalline alloys with high functional properties, Materials Science and Engineering A 304-306 (2001) 1-10.
  • [12] W.H. Wang, Roles of minor additions in formation and properties of bulk metallic glasses, Progress in Materials Science 52 (2007) 540-596.
  • [13] M. Stoica, R. Li, A. R. Yavari, G. Vaughan, J. Eckert, N. Van Steenberge, D.R. Romera, Thermal stability and magnetic properties of FeCoBSiNb bulk metallic glasses, Journal of Alloys and Compounds 504S (2010) S123-S128.
  • [14] 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.
  • [15] H.J. Sun, L. Li, Y.Z. Fang, J.X. Si, B. L. Shen, Bulk glassy (Fe0.474Co0.474Nb0.052)100-x(B0.8Si0.2)x alloys prepared using commercial raw materials, Journal of Non-Crystalline Solids 358 (2012) 911-914.
  • [16] C.A. Pampillo, A.C. Reimschuessel, The fracture topography of metallic glasses, Journal of Materials Science 9 (1974) 718-724.
  • [17] B. Reinker, M. Dopfer, M. Moske, and K. Samwer, Specific heat of Zr65Al7.5Cu17.5Ni10 around the glass transition, The European Physical Journal B 7 (1999) 359-364.
  • [18] H.B. Ke, Z.F. Zhao, P. Wen, W.H. Wang, Specific heat in a typical metallic glass former, Chinese Physics Letters 29/4 (2012) 1-4.
  • [19] Y. Tian, Z.O. Li, E. Yong Jiang, Low temperature specific heat and thermal conductivity of bulk metallic glass (Cu50Zr50)94Al6, Solid State Communications 149 (2009) 1527-1530.
  • [20] I.R. Lu, G.P. Gorler, H.J. Fecht, R. WIllnecker, Investigation of specific heat and thermal expansion in the glass-transition regime of Pd-based metallic glasses, Journal of Non-Crystalline Solids 274 (2000) 294-300.
  • [21] S.I. Abu-Eishah, Y. Haddad, A. Solieman, A, Bajbouj, A new correlation for the specific heat of metals, metal oxides and metal fluorides as a function of temperature, Latin American Applied Research 34 (2004) 257-265.
  • [22] R.T. Qu, M. Stoica, J. Eckert, Z.F. Zhang, Tensile fracture morphology of bulk metallic glass, Journal of Applied Physics 108 (2010) 1-9.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-0e0bc0b5-836b-4231-9fbf-3235e2ac1202
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