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论文:2021,Vol:39,Issue(6):1296-1303 |
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引用本文： |
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孟元沛, 郭志平, 王传婷, 何勇, 何源, 胡雪冰. ZrCuAlNiNb非晶合金的Taylor撞击断裂行为研究[J]. 西北工业大学学报 |
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MENG Yuanpei, GUO Zhiping, WANG Chuanting, HE Yong, HE Yuan, HU Xuebing. Research on Taylor impact fracture behavior of ZrCuAlNiNb amorphous alloy[J]. Northwestern polytechnical university |
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| ZrCuAlNiNb非晶合金的Taylor撞击断裂行为研究 |
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| 孟元沛1, 郭志平1,2, 王传婷1, 何勇1, 何源1, 胡雪冰1 |
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1. 南京理工大学 机械工程学院, 江苏 南京 210094;
2. 西南技术工程研究所, 重庆 401331 |
| 摘要: |
| 在氩气条件下，对ZrCuAlNiNb非晶及其晶体合金进行了撞击速度范围为78.9~155 m/s的Taylor撞击试验研究，利用高分辨率高速摄影对材料的失效断裂过程进行记录，并对失效断裂后的试件进行回收；利用扫描电镜对其断面微观形貌进行观察，分析材料在不同速度撞击下的失效断裂行为。ZrCuAlNiNb非晶合金由低速撞击下的单条主剪切带断裂到高速（≥150 m/s）撞击下的多条剪切带断裂的转变，而且多条沿着试件轴向方向次生剪切带形成；其复杂的受力导致多种断裂形貌，动态温升加剧了材料热软化效应。ZrCuAlNiNb晶体合金撞击靶板产生的裂纹主要沿着轴向扩展，在多条裂纹的相互作用下导致晶体合金失效破碎，断裂形貌呈现河流状的解理断裂形貌。对ZrCuAlNiNb非晶合金的力学性能及其失效行为研究可为推动Zr基非晶合金的工程应用提供理论指导与试验依据。 |
| 关键词:
冲击动力学
ZrCuAlNiNb非晶合金
Taylor撞击
断口形貌
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| Research on Taylor impact fracture behavior of ZrCuAlNiNb amorphous alloy |
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| MENG Yuanpei1, GUO Zhiping1,2, WANG Chuanting1, HE Yong1, HE Yuan1, HU Xuebing1 |
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1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2. Southwest Research Institute of Technology and Engineering, Chongqing 401331, China |
| Abstract: |
| Under argon conditions, the Taylor impact test for ZrCuAlNiNb amorphous alloy with impact velocity range of 78.9-155 m/s was carried out, the failure fracture process of the material was recorded by high-resolution high-speed photography, and the fractured samples after fracture were recovered. The microscopic morphology of the section was observed by scanning electroscope, and the fracture behavior of the material at different impact speeds was analyzed. ZrCuAlNiNb amorphous alloy breaks from a single main shear band under low-speed impact to a multi-shear band break at high speed (≥ 150 m/s), and several secondary shear straps are formed along the axial direction of the sample. Its complex force leads to a variety of fractured forms, and dynamic temperature rise aggravates the thermal softening effect of the material. ZrCuAlNi crystal alloy is transmitted by axial cracks, which cause the crystal alloy to fracture under the interaction of multiple cracks, and the fractured morphology presents a river-like cleavage fracture. The study of the mechanical properties of ZrCuAlNiNb amorphous alloys and their failure behavior provide theoretical guidance and experimental basis for the application of ZrCuAlNiNb amorphous alloys. |
| Key words:
impact dynamics
ZrCuAlNiNb amorphous alloy
Taylor impact
fracture morphology
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| 收稿日期: 2021-01-25
修回日期:
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| DOI: 10.1051/jnwpu/20213961296 |
| 基金项目: 国家自然科学基金（51601095，51601162，11702145）资助 |
| 通讯作者: 王传婷(1986-),南京理工大学副教授,主要从事弹药战斗部新材料技术研究。e-mail:ctwang@njust.edu.cn
Email：ctwang@njust.edu.cn |
| 作者简介: 孟元沛(1997-),南京理工大学博士研究生,主要从事弹药战斗部新材料技术研究。
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| 作者相关文章 |
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| 孟元沛 在本刊中的所有文章 |
| 郭志平 在本刊中的所有文章 |
| 王传婷 在本刊中的所有文章 |
| 何勇 在本刊中的所有文章 |
| 何源 在本刊中的所有文章 |
| 胡雪冰 在本刊中的所有文章 |
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