摘要
The dynamic three-point bending loading was carried out on Ti6321 titanium alloy to cause mode I (open type) fracture and obtain the waveform curve. Combined with the experimental & numerical method, the mode I crack dynamic fracture properties of Ti6321 titanium alloy with three structures were obtained. The fracture surface morphologies of three kinds of Ti6321 titanium alloys were observed and analyzed by SEM and confocal laser scanning microscope (CLSM). The results show that the Widmanstatten structure has the highest dynamic fracture performance of mode I crack, followed by the bimodal structure, and the equiaxed structure has the lowest dynamic fracture performance. For mode I crack fracture, equiaxed structure and bimodal structure are mainly ductile fracture mechanism, while Widmanstatten structure has the characteristics of partial cleavage fracture. The Widmanstatten structure has the best fracture performance. Because of the largest fluctuation of fracture and the largest specific surface area, the crack propagation needs more energy.
投稿的翻译标题 | Research on Dynamic Fracture Behavior of Ti6321 Titanium Alloy |
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源语言 | 繁体中文 |
页(从-至) | 953-958 |
页数 | 6 |
期刊 | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
卷 | 52 |
期 | 3 |
出版状态 | 已出版 - 3月 2023 |
关键词
- Ti6321 titanium alloy
- dynamic fracture
- fracture characteristics
- mode I crack