Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/4416
Title: Effect of Nd Addition on the Microstructure and Cyclic Oxidation Behavior of NiAl–Cr(Mo) Eutectic Alloys
Authors: Ataş, Mehmet Şahin
Yıldırım, Mehmet
Keywords: cyclic oxidation
eutectic
microstructure
NiAl
Alumina
Aluminum alloys
Aluminum oxide
Binary alloys
Chromium alloys
Microhardness
Microstructure
Molybdenum alloys
Neodymium alloys
Oxidation
Oxidation resistance
Rare earths
Cyclic oxidation
Cyclic oxidation behavior
Cyclic oxidation tests
Cyclic-oxidation-resistance
Eutectic alloys
Eutectic mixture
Micro-structural properties
Nd addition
Rare earth element nd
Surface scale
Eutectics
Publisher: Springer Science and Business Media Deutschland GmbH
Abstract: The effect of a minor amount of rare-earth element Nd addition (0.1 at%) on the microstructural properties, microhardness, and cyclic oxidation resistance of NiAl–Cr(Mo) alloy is investigated in detail. The microstructure of investigated alloys is composed of NiAl-based dendrites and a eutectic mixture whose components are NiAl and Cr(Mo) phases. The minor amount of Nd addition refines the microstructure and increases the microhardness considerably. The results of the cyclic oxidation tests reveal that the surface scales of both alloys are mainly consisted of α-Al2O3 and little amount of Cr2O3. A Cr(Mo)-rich layer is observed in the metal/oxide interface. With Nd addition, the oxidation resistance of Ni–33Al–31Cr–3Mo alloy is strongly improved. The Nd-added alloy exhibits lower oxidation mass gain and increased scale adherence. © 2023, American Foundry Society.
Description: Article; Early Access
URI: https://doi.org/10.1007/s40962-023-01102-w
https://hdl.handle.net/20.500.13091/4416
ISSN: 1939-5981
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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