Effects of nano-dispersoids on synthesis and characterization of low Cr-containing CoNiFeMnCr high entropy alloy by mechanical alloying

被引：21

作者：

Chen, Chun-Liang ^{[1
]}

Suprianto ^{[1
,2
]}

机构：

[1] Natl Dong Hwa Univ, Dept Mat Sci & Engn, Hualien 97401, Taiwan

[2] Univ Sumatera Utara, Fac Engn, Dept Mech Engn, Padang Bulan 20155, Medan, Indonesia

来源：

INTERMETALLICS | 2019年 / 113卷

关键词：

High entropy alloy; Oxide dispersion strengthening; Mechanical alloying; Nanocrystalline materials; MICROSTRUCTURE; EVOLUTION; STABILITY; COCRFENI;

D O I：

10.1016/j.interrnet.2019.106570

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：

Low Cr-containing CoNiFeMnCr high entropy alloys (HEAs) dispersed with different amounts of nano-Y2O3 particles were fabricated by mechanical alloying. The effects of nano-dispersoids on synthesis, microstructural evolution and mechanical properties of the model HEAs were investigated. The results demonstrate that a solid solution phase was formed after a long time of mechanical alloying. The addition of Y2O3 oxides in the model HEAs can promote the formation of the fine, uniform distribution of Cr-rich oxide particles. It suggested that the presence of Y2O3 could act as a nucleation site for precipitation of Cr-rich oxides. A high hardness and elastic modulus of the HEAs can therefore be achieved.

引用

页数：8

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