Journal
MATERIALS LETTERS
Volume 253, Issue -, Pages 268-271Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2019.06.067
Keywords
Eutectic high entropy alloys; Cast; Microstructure; Mechanical properties
Funding
- National Key R&D Program of China [2018YFB1105804]
- National Natural Science Foundation of China [51471133, 51771149]
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Mechanical properties of casting alloys are generally limited. To make casting alloys applicable for a high level of service environments, a novel casting eutectic high entropy alloy (EHEA) with excellent mechanical properties is proposed. The hierarchical microstructures are with fine regular lamellar eutectic and coarse irregular eutectic. The eutectics consist of face-centered cubic (FCC) and ordered body-centered cubic (B2) phases with the semi-coherent interface. In the as-cast state, it shows a tensile strength of 1266.5 MPa and elongation of 20.3%. The unusual as-cast properties make it possible to manufacture high performance products by direct casting. (C) 2019 Elsevier B.V. All rights reserved.
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