期刊
INTERMETALLICS
卷 86, 期 -, 页码 104-109出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2017.03.019
关键词
High entropy alloy; Composites; Al2O3; FCC solid solution
资金
- Polish science financial resources Program Juventus Plus [0400/IP2/2015/73]
High Entropy Alloy Matrix nano-Composite (HEAMnC) based on CoCrFeMnNi with 5% additions of aAl(2)O(3) nano-particles was produced by mechanical alloying and consolidation in Hot Isostatic Press (HIP). Its microstructure consisted of spherical grains with average size 30-150 nm, among which 5-35 nm nano-particles of Al2O3 were identified. X-ray analysis and transmission electron microscopy studies with micro-analysis confirmed predominant presence of face-centered cubic solid solution with alpha aluminum oxide and small amount of M23C6 carbides. In comparison with CoCrFeMnNi HEA without additions, composite hardness increased up to 545 +/- 13 HV, while yield strength grew from 1180 MPa to 1600 MPa, accompanied by decrease in plasticity and compressive strength. (C) 2017 Elsevier Ltd. All rights reserved.
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