CoCrFeMnNi high entropy alloy matrix nanocomposite with addition of Al2O3

被引：114
作者：
Rogal, Lukasz [1 ]
Kalita, Damian [1 ]
Litynska-Dobrzynska, Lidia [1 ]
机构：
[1] Polish Acad Sci, Inst Met & Mat Sci, 25 Reymonta St, PL-30059 Krakow, Poland
来源：
INTERMETALLICS | 2017年 / 86卷
关键词：
High entropy alloy; Composites; Al2O3; FCC solid solution; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; THERMAL-STABILITY; MICROSTRUCTURE; BEHAVIOR; HARDNESS;
D O I：
10.1016/j.intermet.2017.03.019
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：104 / 109
页数：6
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