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48,80 €ISBN 978-3-8440-7231-0Softcover176 pages88 figures261 g21 x 14,8 cmEnglishThesis
March 2020
Ceyhun Oskay
Investigation of the microstructural and mechanical property changes of NiAl coated Ni-based superalloys during high temperature exposure
The present work focused on the determination of the mechanical behavior of aluminized Ni-based superalloys with respect to their microstructural degradation during high temperature exposure. For this purpose, a mechanical model concept was developed, which utilized Al-concentration as the major influential parameter. Mechanical properties were determined using experimental methods and were correlated with the Al-content. These experimental results were then conveyed into a software tool, which was used to determine the load-bearing capability of the coated components below and above the ductile to brittle transition temperature (DBTT) of the coating as a function of exposure duration, temperature, component and coating thickness as well as the Al-concentration in the as-deposited coating.
Keywords: Ni-based superalloys; NiAl coatings; mechanical properties; oxidation; interdiffusion
Schriftenreihe des DECHEMA-Forschungsinstituts
Edited by DECHEMA-Forschungsinstitut, Frankfurt am Main
Volume 19
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