| Ni-Co合金快淬过程的分子动力学模拟 |
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| 引用本文： | 丁志杰,唐永建,易勇,罗江山,李恺.Ni-Co合金快淬过程的分子动力学模拟[J].强激光与粒子束,2011,23(1):225-228. |
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| 作者姓名： | 丁志杰 唐永建 易勇 罗江山 李恺 |
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| 作者单位： | 1. 西南科技大学 材料科学与工程学院， 四川 绵阳 621010；2. 中国工程物理研究院 激光聚变研究中心， 四川 绵阳 621900 |
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| 基金项目： | 国家自然科学基金委员会-中国工程物理研究院联合基金 |
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| 摘 要： | 采用分子动力学模拟熔体旋淬技术的合金快淬过程,在不同的冷却速度下研究Ni-Co合金在快淬后的结构特征.模拟发现:Ni-Co二元合金的凝固过程对冷却速率的变化较为敏感,体系对形成非晶对冷却速率要求较高,约在80 K/ps以上,可以采用增加添加元素的方法来降低材料对冷却速率的要求;在75 K/ps的冷却速率下合金最终完全晶...
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| 关 键 词： | Ni-Co合金 快淬 冷却速率 分子动力学 嵌入原子势 |
| 收稿时间： | 1900-01-01; |
Molecular dynamics simulation of Ni-Co alloy melt-spinning process |
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| Ding Zhijie,Tang Yongjian,Yi Yong,Luo Jiangshan,Li Kai.Molecular dynamics simulation of Ni-Co alloy melt-spinning process[J].High Power Laser and Particle Beams,2011,23(1):225-228. |
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| Authors: | Ding Zhijie Tang Yongjian Yi Yong Luo Jiangshan Li Kai |
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| Institution: | 1. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China; 2. Research Center of Laser Fusion, CAEP, P. O. Box 919-987, Mianyang 621900, China |
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| Abstract: | The process of the quenching Ni-Co alloy prepared by melt-spinning technology is simulated by molecular dynamics simulation, and the structure characteristics of Ni-Co alloy are studied at different cooling rates. The simulation shows that, the alloy solidification process is sensitive to the cooling rate, and the formation of binary Ni-Co amorphous structure needs a high cooling rate above 80 K/ps. Add additional elements can reduce the required cooling rate of the materials. The alloy is completely crystalline at the cooling rate of 75 K/ps, and the structural change happens, especially at 375 K. |
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| Keywords: | melt-spinning cooling rates molecular dynamics embedded atom method |
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