| 碳纳米管增强镁基复合材料热残余应力的有限元分析 |
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| 引用本文： | 李维学,张胡军,戴剑锋,王青.碳纳米管增强镁基复合材料热残余应力的有限元分析[J].复合材料学报,2011,28(1):166-171. |
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| 作者姓名： | 李维学 张胡军 戴剑锋 王青 |
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| 作者单位： | 1.兰州理工大学 理学院, 兰州730050; |
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| 基金项目： | 国家自然科学基金面上项目(50873047); 甘肃省科技计划(1010RJZA045) |
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| 摘 要： | 为了探寻Ni层厚度对镀镍碳纳米管增强AZ91D镁基复合材料(Ni-CNTs/AZ91D)中热残余应力的影响, 在实验基础上, 建立不同Ni层厚度时Ni-CNTs/AZ91D复合材料的有限元模型, 模拟了Ni-CNTs/AZ91D复合材料中热残余应力的分布。研究发现: 在碳纳米管表面镀镍能够明显降低Ni-CNTs/AZ91D复合材料中的热残余应力。Ni-CNTs/AZ91D复合材料中, 热残余应力在Ni层厚度为6nm时最小; Ni层厚度由2nm增至6nm时, 热残余应力随着Ni层厚度的增加而减小; 当Ni层厚度超过6 nm时热残余应力随着Ni层厚度的增加而增大。复合材料中热残余应力的最大值随碳纳米管表面Ni层厚度的增加向Ni层与基体的界面移动。
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| 关 键 词： | 热残余应力 碳纳米管 镁基复合材料 镍层厚度 有限元 |
| 收稿时间： | 2010-01-22 |
| 修稿时间： | 2010-05-14 |
Finite element analysis of thermal residual stresses in magnesium matrix composite reinforced by carbon nanotubes |
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| LI Weixue,ZHANG Hujun,DAI Jianfeng,WANG Qing.Finite element analysis of thermal residual stresses in magnesium matrix composite reinforced by carbon nanotubes[J].Acta Materiae Compositae Sinica,2011,28(1):166-171. |
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| Authors: | LI Weixue ZHANG Hujun DAI Jianfeng WANG Qing |
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| Affiliation: | 1.School of Science, Lanzhou University of Technology, Lanzhou 730050, China;2.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | In order to explore the influence of Ni-coating thickness on the thermal residual stress in AZ91D magnesium matrix composite reinforced with Ni coated carbon nanotubes(Ni-CNTs/AZ91D),the distribution of the thermal residual stresses in Ni-CNTs/AZ91D composite was simulated by using finite element method(FEM)based on some experiments.The results indicate that plating Ni on CNTs'surface can greatly reduce the thermal residual stress of Ni-CNTs/AZ91D.For the Ni-CNTs/AZ91D composite materials,the thermal residu... |
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| Keywords: | thermal residual stresses carbon nanotubes magnesium matrix composite Ni coating thickness finite element |
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