Paper Title:
Influence of Al-Si Layer on Structure and Properties of Cast Ni-Based Superalloys
  Abstract

High-temperature constructional parts of aircraft engines and energy units are exposed to high dynamic stress (fatigue processes and creep) and various temperatures in dioxide-corrosion condition (hot corrosion, oxidation and erosion). The improvement of aero-engine and turbine efficiency is possible through the increase of temperature in front of turbine. This requires the use of heat-resistant and creep-resistant materials, especially nickel-base superalloys which resist mentioned effects for a limited period of time. A deposition of protective layers should improve hot corrosion resistance. This paper is focused on microstructure of protective layers created by codeposition of Al and Si on nickel-base superalloys INCO 713 LC and INCO 738 LC after thermal and thermal-stress exposition and on microstructure of basic materials (substrates). The contribution also shows creep tests results for both superalloys with and without a protective layer.

  Info
Periodical
Materials Science Forum (Volumes 567-568)
Edited by
Pavel Šandera
Pages
273-276
DOI
10.4028/www.scientific.net/MSF.567-568.273
Citation
S. Hutařová, T. Vlasák, T. Podrábský, J. Hakl, M. Juliš, "Influence of Al-Si Layer on Structure and Properties of Cast Ni-Based Superalloys", Materials Science Forum, Vols. 567-568, pp. 273-276, 2008
Online since
December 2007
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Price
$32.00
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