期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140611
关键词
Medium-entropy alloy; Laves phase; Ultrafine-grained microstructure; Strengthening mechanism
类别
资金
- Fundamental Research Program of Shenzhen [JCYJ20170412153039309]
- Shenzhen Peacock Plan, China [KQTD2016053019134356]
- Presidential fund and Development and Reform Commission of Shenzhen Municipality, China
By adding niobium to form a Laves phase, the yield strength of the CrFeNi alloy can be enhanced. The study found that the modulus mismatch between Laves phase and fcc matrix is the main strengthening mechanism.
We propose a strategy to enhance the yield strength of an ultrafine-grained equiatomic CrFeNi alloy through the addition of niobium to form a Laves phase in a face-center-cubic (fcc) matrix. The fabricated CrFeNiNb0.158 alloy shows a high yield strength of 961 +/- 10 MPa and a good ductility of 10.1 +/- 0.9%. The phase formation and strengthening mechanisms were analyzed by Hume-Rothery rules and quantitative estimation. The modulus mismatch between Laves phase and fcc matrix was found to be the main strengthening origin. This study provides significant insight into strengthening medium-/high-entropy alloys by introducing hard intermetallic compounds.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据