期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 828, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.154457
关键词
Medium-entropy alloy; Precipitation strengthening; Coherent precipitates; Mechanical property controlling
资金
- National Natural Science Foundation of China [51771184, 11735015, 11575241, 51801203, 11575231]
- Natural Science Foundation of Anhui Province [1808085QE132]
- Open Project of State Key Laboratory of Environment friendly Energy Materials [18KFHG02]
- Innovation Center of Nuclear Materials for National Defense Industry
The coherent precipitate L1(2)-type Ni3Ti nanoclusters and nano-sized particles in a fcc-FeCoNi medium-entropy alloy (MEA) matrix were designed and realized through minor Ti addition. The mechanical properties were modulated by thermo-mechanical processing and various annealing treatments, which leads to different hardening mechanisms such as dislocation strengthening and precipitation strengthening. An excellent combination of yield strength (similar to 893 MPa), ultimate tensile strength (UTS similar to 1263 MPa) and ductility (similar to 24% elongation) can be achieved because of the precipitation strengthening from the L1(2) type Ni3Ti nano-sized precipitates. The present study is important not only for understanding the strengthening mechanisms of metallic materials, but also provides a generic way to obtain the desirable mechanical properties of alloys via microstructural regulation. (C) 2020 Elsevier B.V. All rights reserved.
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