| 铱单晶纳米线在不同应力状态下的变形行为 |
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| 引用本文： | 张璠. 铱单晶纳米线在不同应力状态下的变形行为[J]. 贵金属, 2019, 40(3): 1-4, 10 |
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| 作者姓名： | 张璠 |
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| 作者单位： | 宝鸡文理学院机械工程学院,陕西宝鸡,721016 |
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| 基金项目： | 宝鸡文理学院重点项目(ZK2018098) |
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| 摘 要： | 基于分子动力学模拟方法计算了铱单晶纳米线在室温下的拉伸和压缩变形行为。计算结果表明，铱单晶纳米线在拉伸和压缩时的力学性能均存在尺寸效应。铱单晶纳米线的拉伸和压缩变形行为具有非对称性，在拉伸条件下其伸长率为14%，而在压缩条件下表现出较好的塑性，在压缩过程中有堆垛层错产生，压缩应变达到0.499后模型还未发生断裂。
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| 关 键 词： | 金属材料 分子动力学模拟 铱单晶纳米线 拉伸 压缩 |
| 收稿时间： | 2019-01-07 |
The Deformation Behavior of Iridium Single Crystal Nanowire under Different Stress Conditions |
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| ZHANG Fan. The Deformation Behavior of Iridium Single Crystal Nanowire under Different Stress Conditions[J]. Precious Metals, 2019, 40(3): 1-4, 10 |
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| Authors: | ZHANG Fan |
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| Affiliation: | Department of Mechanical Engineering, Baoji University of Arts And Sciences, Baoji 721016, Shaanxi, China |
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| Abstract: | The tension and compression deformation behavior of iridium single crystal nanowire at 300K was calculated using molecular dynamics simulation. The results showed that the mechanical properties of iridium single crystal nanowire exists size effects during both tension and compression. Its deformation behavior under tension and compression is asymmetry. The elongation of iridium single crystal nanowire under tension is 14%, while it shows better plasticity under compression. During compression stacking faults are generated. The model has not broken even though strain reaches 0.499. |
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| Keywords: | metal materials molecular dynamics simulation iridium single crystal nanowire tension compression |
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