ATD and DSC analyses of nickel superalloys

• Autorzy: Binczyk F. , Śleziona J. , Cwajna J. , Roskosz S.
• Języki publikacji: EN

Abstrakty

EN

The study presents the results of investigations of phase transformations that take place during melting and solidification of nickel superalloys, like RENE 77, IN7 13C, MAR 247 and IN 100. Examinations were carried out by the ATD method of thermal analysis and DSC scanning calorimetry. It has been concluded that ATD offers wider possibilities for interpretation of the solidification process at its first stage, when from the liquid state the primary phases of a low heat of solidification are precipitating. The calorimetric method is more useful in the investigation of solid state phase transformations. The obtained values of the solidification parameters (Tlik and Tsol) are comparable for both methods, especially as regards alloys solidification. An undeniable advantage of the DSC method is the possibility to measure the value of the heat (enthalpy) of phase transformations, especially during melting of alloys.

Słowa kluczowe

EN

nickel superalloy; ATD analysis; DSC analysis; temperature; solidification; microstructure; carbides

PL

nadstop niklu; metoda ATD; kalorymetria skaningowa; krzepnięcie; mikrostruktura; węgliki

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 3s
• Strony: 5--8
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Binczyk F.

autor

Śleziona J.

autor

Cwajna J.

autor

Roskosz S.

• Silesian University of Technology, Department of Metal Alloys and Composites Engineering, Krasińskiego Str. 8, 40-019 Katowice, Poland,

Bibliografia

• [1] F. Zupanic, T. Boncina, A. Krizman, F.D. Tichelaar: Structure of continuously cast Ni-based superalloy Inconel 713C, Journal of Alloys and Compounds, v. 329, issue 1-2, (2001), pp.290-297.
• [2] M. Tabuchi, K. Kubo, K. Yagi, A.T. Yokobori Jr, A. Fuji: Results of a Japanese round robin on creep crack growth evaluation methods for Ni-base superalloys, Engineering Fracture mechanics, volume 62, issue 1, (1999), pp. 47-60.
• [3] Superalloys, Metal Powder Report, v. 51, issue 9, (1996), p. 39.
• [4] A. Smith, A. Mainwood, M. Watkins: The kinetics of the capture of nitrogen by nickel defects in diamond, Diamond and related materials, v. 11, issue 3-6, (2002), pp. 312-315.
• [5] Lachowicz M.: Characteristics of microstructural changes and crack formation mechanism detected during welding and heat treatment of Inconel 713C superalloy, Doctor’s Thesis, Politechnika Wrocławska (2006) (in Polish).
• [6] Hartman D., Muerrle U., Reber G.: The effects of electron beam refining on the cast ability of IN 713 C, Metal, (1992), issue 5, pp. 443-447.
• [7] L. Liu, T. Huang, Y. Xiong: Grain refinement of superalloy K4169 by addition of refiners: cast structure and refinement mechanisms, Materials Science and Engineering A, 394, (2005), pp.1-8.
• [8] Y. Xiong, J. Du, X. Wie, A. Yang, L. Liu: Grain refinement of Superalloy IN 718C by the addition of Inoculants, Metallurgical and Materials Transactions A, vol. 35A, July (2004), pp. 2111-2114.
• [9] Y. Xiong, A. Yang, Y. Guo, W. Liu, L. Liu: Grain refinement of superalloys K3 and K4169 by the addition of refiners, Science and Technology of Advanced Materials, issue 2, (2001), pp. 13-17.