Author:
Förner Andreas,Giese S.,Arnold C.,Felfer P.,Körner C.,Neumeier S.,Göken M.
Abstract
AbstractEutectic NiAl-(Cr,Mo) composites are promising high temperature materials due to their high melting point, excellent oxidation behavior and low density. To enhance the strength, hardness and fracture toughness, high cooling rates are beneficial to obtain a fine cellular-lamellar microstructure. This can be provided by the additive process of selective electron beam melting. The very high temperature gradient achieved in this process leads to the formation of the finest microstructure that has ever been reported for NiAl-(Cr,Mo) in-situ composites. A very high hardness and fracture toughening mechanisms were observed. This represents a feasibility study towards additive manufacturing of eutectic NiAl-(Cr,Mo) in-situ composites by selective electron beam melting.
Publisher
Springer Science and Business Media LLC
Reference39 articles.
1. Cline, H. E. & Walter, J. L. The Effect of Alloy Additions on the Rod-Plate Transition in the Eutectic NiAI-Cr. Metall. Trans. 1, 2907–2917 (1970).
2. Walter, J. L. & Cline, H. E. The effect of solidification rate on structure and high-temperature strength of the eutectic NiAl-Cr. Metall. Mater. Trans. B 1, 1221–1229 (1970).
3. Walter, J. L. & Cline, H. E. Stability of the directionally solidified eutectics NiAl-Cr and NiAl-Mo. Metall. Trans. 4, 33–38 (1973).
4. Awotunde, M. A. et al. NiAl intermetallic composites—a review of processing methods, reinforcements and mechanical properties. Int. J. Adv. Manuf. Technol. 104, 1733–1747 (2019).
5. Bochenek, K. & Basista, M. Advances in processing of NiAl intermetallic alloys and composites for high temperature aerospace applications. Prog. Aerosp. Sci. 79, 136–146 (2015).
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