期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 895, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.162719
关键词
Metal matrix composites (MMCs); Electron beam remodeling; Microstructure; Mechanical properties; Strengthening mechanism
资金
- Shandong Provincial Key Research and Development Program [2019JZZY010439]
- National Natural Science Foundation of China [52175308]
A high-performance titanium matrix composite with innovative TiB whiskers reinforcement architecture was fabricated using scanning electron beam remodeling. The ultimate tensile strength of the remodeled titanium matrix composites was significantly improved with the contribution of fine-grain strengthening, whisker strengthening, and sub-structural strengthening, while the wear resistance was also reinforced. This research provides unique thoughts and references for the preparation of higher performance titanium matrix composites.
A high-performance titanium matrix composite with innovative TiB whiskers reinforcement architecture was fabricated using scanning electron beam remodeling. The microstructure and mechanical properties were investigated, and the microstructure evolution and strengthening mechanism were discussed. Results show that a reformative titanium matrix composite with a three-dimensional equiaxed reinforcement architecture was built. The matrix and reinforcement were refined into needle martensite and clustered TiB whiskers with diffusionless transformation and eutectic reaction. With the contribution of fine-grain strengthening, whisker strengthening, and sub-structural strengthening, the ultimate tensile strength of the remodeled titanium matrix composites was 1456 MPa, increasing 275 MPa (23.3%) to the raw material. Moreover, the wear resistance was reinforced by the electron beam remodeling. This research could provide unique thoughts or references for the preparation of higher performance titanium matrix composites. (c) 2021 Elsevier B.V. All rights reserved.
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