| Ti6321钛合金再加载力学行为研究 |
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| 引用本文： | 周哲,王琳,程兴旺,程焕武,徐雪峰,Tayyeb Ali,刘安晋,宁子轩,许玲玉,张斌斌,才鸿年.Ti6321钛合金再加载力学行为研究[J].稀有金属材料与工程,2021,50(2):562-567. |
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| 作者姓名： | 周哲 王琳 程兴旺 程焕武 徐雪峰 Tayyeb Ali 刘安晋 宁子轩 许玲玉 张斌斌 才鸿年 |
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| 作者单位： | 北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院,北京理工大学材料学院,洛阳船舶材料研究所,洛阳船舶材料研究所,北京理工大学材料学院 |
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| 摘 要： | 对经轻气炮预冲击的Ti6321钛合金双态组织样品进行准静态压缩和动态压缩再加载试验,探究冲击后其力学性能的变化。利用光学显微镜(OM)和透射电子显微镜(TEM)对其微观组织演化进行观察并分析。结果表明,经预冲击后的Ti6321钛合金的静动态屈服强度、平均流变应力较原始样品有所升高,但断裂应变、冲击吸收功明显下降,且经过预冲击的样品经动态再加载后更易出现绝热剪切破坏。TEM结果表明,经轻气炮预冲击过后的样品内部有孪晶生成,从而导致了Ti6321钛合金表现出冲击波强化效应。
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| 关 键 词： | Ti6321钛合金 再加载 冲击强化 孪晶 |
| 收稿时间： | 2020/2/20 0:00:00 |
| 修稿时间： | 2020/7/30 0:00:00 |
Research on Reloading Mechanical Behavior of Ti6321 Titanium Alloy |
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| Zhou Zhe,Wang Lin,Cheng Xingwang,Cheng Huanwu,Xu XUefeng,Tayyeb Ali,Liu Anjin,Ning Zixuan,Xu Linyu,Zhang Binbin and Cai Hongnian.Research on Reloading Mechanical Behavior of Ti6321 Titanium Alloy[J].Rare Metal Materials and Engineering,2021,50(2):562-567. |
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| Authors: | Zhou Zhe Wang Lin Cheng Xingwang Cheng Huanwu Xu XUefeng Tayyeb Ali Liu Anjin Ning Zixuan Xu Linyu Zhang Binbin and Cai Hongnian |
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| Affiliation: | School of Materials Science and Engineering, Beijing Institute of Technology,,,,,,,,,, |
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| Abstract: | The quasi-static and dynamic reload compression tests were conducted to explore the changes in mechanical properties of Ti6321 alloy bimodal structure after preshock. The optical microscopy (OM) and transmission electron microscopy (TEM) were used to observe and analyze the microstructures. The results show that the static and dynamic yield strength and average flow stress of Ti6321 alloy after pre-shock are higher than those of the original sample, but the fracture strain and impact absorption energy are significantly reduced, and the preshock sample is more likely to appear an adiabatic shear failure after SHPB loading. TEM results showed that twins were formed inside the sample after the preshock of the light gas gun, which caused the Ti6321 titanium alloy to exhibit a shock wave strengthening effect. |
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| Keywords: | Ti6321 titanium alloy reloading impact strengthening twins |
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