期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 667, 期 -, 页码 53-57出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.01.153
关键词
Strengthening; High entropy alloys; Precipitation
资金
- National Natural Science foundation of China [5147113]
- Natural Science Basis Research Plan in Shaanxi Province of China [2014JQ6207]
- State Key Laboratory of Solidification Processing (NWPU), China [14-BZ-2015]
High entropy alloys (HEAs) are facing difficulties in balancing strength and ductility, and till now there is no satisfactory solution. In this paper, the CoCrFeNiNb0.25 HEA with good ductility was strengthened by a face centered cubic (FCC) precipitate after annealing heat treatment. When the CoCrFeNiNb0.25 HEA was annealed at 750 degrees C, a lath-shaped FCC precipitates with nano basket-weave microstructures appeared and distributed randomly in the proeutectic FCC phase. Due to the precipitation strengthening, the yield stress of the CoCrFeNiNb0.25 HEA almost doubled but its ductility was just slightly damaged. (c) 2016 Elsevier B.V. All rights reserved.
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