期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 815, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.152479
关键词
High-entropy alloys; Shear-tension complex stress states; Texture; Mechanical properties
资金
- National Natural Science Foundation of China [11602158, 51501123, 11390362]
- Top Young Academic Leaders of Shanxi
- Key Innovation Teams of Shanxi Province
- Sanjin Young Scholars Project of Shanxi Province
- Natural Science Foundation of Shanxi Province [201601D021026]
- Youth Academic Backbone Cultivation Project from Taiyuan University of Technology
- 1331 project fund
The shear-tension deformation behaviors of CoCrFeNi high-entropy alloy (HEA) were investigated by introducing five groups of different inclined notches, and mainly focus on mechanical response and texture evolution. The results show that CoCrFeNi HEA exhibits significant structural sensitivity and high notch strength ratio (NSR), and the stress concentration factor K-t of specimens and stress distribution at the notch roots were acquired by finite element method (FEM). In addition, the notch strengthening effect of HEA is more obvious with the increase of shear stress component. When the shear stress component increases, the E {111}< 110 >, F {111}< 112 > and gamma-fiber textures are the main texture components after deformation. The evolution characteristics of Cu-type and Brass-type textures under the shear-tension stress states are significantly different from those under the rolled state. Moreover, complex stress states have no obvious effect on Cu texture under shear-tension deformation, but a large one on CuT texture. (C) 2019 Elsevier B.V. All rights reserved.
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