Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 502, Issue 2, Pages 295-299Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.11.104
Keywords
Annealing; Microstructure; Mechanical properties; Magnetic properties
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Funding
- National Natural Science Foundation of China (NNSFC) [50772081, 50821140308]
- Ministry of Education of China [PCSIRT0644]
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The equiatomic multiprincipal CoCrFeNiCuAl high-entropy alloy was prepared using a vacuum arc melt casting method. The as-cast alloy was subsequently annealed at 1000 degrees C for 2 h and the annealing effects on the structure and properties evolution were investigated. The as-cast alloy is composed of simple BCC and FCC solid solutions. The 2 FCC phase precipitates from the ordered BCC matrix and the FCC phases become dominated after the alloy was annealed. Both alloys show typical cast-dendrite morphology and similar elemental segregation. The as-annealed alloy exhibits high strength and excellent ductility of 1.63 GPa and 34%, respectively. Both alloys possess high saturated magnetization and undergo a ferromagnetic transition. (C) 2009 Elsevier B.V. All rights reserved.
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