Affiliation:
1. Volgograd State Technical University
Abstract
The influence of thermal action at 1150 °C on the kinetics of phase transformations in a layered coating FeAl (Cr,Si) / Fe3Al (Cr,Si) / Fe (Al,Cr,Si), obtained using a technology involving aluminizing of an Cr15Al5 alloy by hot dipping in silumin melt AK12M2 and heat treatment. It was shown that after 100 hours of exposure, the visually distinguishable boundary between the coating and the alloy disappears. The aluminum content in the Cr15Al5 alloy increased to 17 at. %, silicon up to 3 at. %, and chromium is reduced to 14 at. %. The microhardness of the alloy increases from 1.6 to 2.4 GPa and survivability at a test temperature of 1150 °C increases from 120 to at least 920 hours.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference20 articles.
1. G. Lai, High Temperature Corrosion and Materials Application (USA: ASM International), 2007, p.461.
2. V.G. Shmorgun, O.V. Slautin, D.V. Pronichev, V.P. Kulevich, Study of high-temperature heating effect on transformation of structure and phase composition of coatings of Al-Fe system, IOP Conference Series: Earth and Environmental Science, IOP Publishing. 87(9) (2017) 092025.
3. K.G. Field, M.A. Snead, Y. Yamamoto, K.A. Terrani, Handbook on the Material Properties of FeCrAl Alloys for Nuclear Power Production Applications, USA: Oak Ridge National Lab, Oak Ridge, TN, 2017, № ORNL/TM-2017/186.
4. R.B. Rebak, K.A. Terrani, W.P. Gassmann, J.B. Williams and K.L. Ledford, Improving nuclear power plant safety with FeCrAl alloy fuel cladding, MRS Advances. 2(21-22) (2017) 1217-1224.
5. T. Sarikka, R. Ilola, R. Pohja, H. Hänninen, Corrosion resistance of Kanthal A-1 and Fe-12Cr-2Si alloy coatings in Cl-containing environment, Conference: Baltica IX-International Conference on Life Management and Maintenance for Power Plants Volume: VTT Research Highlights 106-Technology (2013).