Effect of repeated remelting on the chemical composition and structure of nickel alloys

• Autorzy: Binczyk, F. , Śleziona, J. , Mikuszewski, T.
• Języki publikacji: EN

Abstrakty

EN

The results of preliminary tests and studies on the effect of repeated remelting of selected nickel alloys on changes in the chemical composition and structure were presented. The aim was to investigate possible management and utilisation of post-production waste (rejects, parts of the gating system, etc.). It has been reported that repeated remelting of IN-713C alloy had no significant effect on changes in its chemical composition. Only aluminium slightly reduced its content due to melting loss, as confirmed further by the results of ATD thermal analysis. On the other hand, in MAR-247 alloy after remelting, a decrease in the content of Cr, Ta, Hf, and C in particular, was observed. To re-use the post-production waste, it is necessary to make up the content of some elements (especially trace elements) and carry out the modification process.

Słowa kluczowe

PL

nadstop niklu; kryształ słupkowy; analiza termiczna (ATD)

EN

nickel superalloy; columnar grains; equiaxial grains; ATD thermal analysis

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 189--194
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Binczyk, F.

• Chair of Materials Technology, Silesian University of Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland,

autor

Śleziona, J.

• Chair of Materials Technology, Silesian University of Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland

autor

Mikuszewski, T.

• Chair of Materials Technology, Silesian University of Technology, 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, Volume 329, Issue 1-2, November 14, 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, Vol. 62, iss. 1, January 1999, pp. 47-60.
• [3]. A. Smith, A. Mainwood, M. Watkins: The kinetics of the capture of nitrogen by nickel defects in diamond, Diamond and Related Materials, Volume 11, Issue 3-6, March-June, 2002, pp. 312-315.
• [4]. M. Lachowicz:: Characteristics of microstructural changes and fracture mechanism during welding and heat treatment of Inconel 713C superalloy, Doctor's Thesis, Wrocław University of Technology, 2006 (in Polish).
• [5] Hartman D., Muerrle U., Reber G.: The effects of electron beam refining on the castability of IN 713 C, Metall, 1992, No. 5, pp.443-447.
• [6] K.H. Kloos, K. Stein: Metallurgia, Vol. 38(8),1984, pp. 740-747.
• [7]. J.P. Dennison: In Grain Refinement In Casting and Welds, TMS-AIME, 1983, pp.133-149.
• [8] A.F. Denzine, T.A. Kolakowski: In AGRED Conference Procedings, Vol. 325(12), 1982, pp.5-6.
• [9] L. Liu, 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.