| ZK60合金单向拉伸过程中空洞行为的数值模拟 |
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| 引用本文： | 于彦东,冯娟,江鹏,王国军.ZK60合金单向拉伸过程中空洞行为的数值模拟[J].哈尔滨理工大学学报,2009,14(5):1-3. |
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| 作者姓名： | 于彦东 冯娟 江鹏 王国军 |
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| 作者单位： | 于彦东,冯娟,江鹏(哈尔滨理工大学,材料科学与工程学院,黑龙江,哈尔滨,150040);王国军(东北轻合金责任有限公司,黑龙江,哈尔滨,150086) |
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| 基金项目： | 国家自然科学基金项目，哈尔滨市科技攻关项目 |
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| 摘 要： | 对ZK60合金超塑性单向拉伸过程中空洞生长进行了数值模拟和实验研究.分析了ZK60合金单向拉伸过程中空洞生长机理,并提出相应的模型.运用三维刚粘塑性有限元程序,模拟预报空洞半径和体积分数在单向拉伸过程中的变化规律.通过图像分析软件对材料微观组织进行观察,确定了实际空洞半径和体积分数.对模拟结果和实验进行了对比分析,得到模拟的空洞半径和体积分数与实验结果吻合良好,模拟的空洞长大规律呈指数增长模型.
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| 关 键 词： | ZK60合金 空洞半径 空洞体积分数 数值模拟 |
Numerical Simulation on Cavity Growth in Uniaxial Tension of ZK60 Magnesium Alloy |
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| Affiliation: | YU Yan-dong, FENG Juan, JIANG Peng , WANG Guo-jun( 1. School of Materials Science and Engineering, Harbin University of Science and Technology Harbin 150040, China;2. Northeast Light Alloy Company Limited, Harbin 150086, China) |
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| Abstract: | In this paper, numerical simulation and experimental studies on the cavity growth were carried out in the case of uniaxial tension of ZK60 superplastic alloy. The mechanism of cavity growth in uniaxial tension process was analyzed to obtain the corresponding model. An exponentially increasing cavity growth model was introduced into this numerical simulation effectively. A three-dimensional rigid-visco plastic finite element method （FEM） program has been developed to predict the variation of cavity radius and volume fraction. The values of cavity radius and volume fraction obtained by numerical simulation were＇ in good agreement with experimental results. |
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| Keywords: | ZK60 magnesium alloy cavity radius cavity volume fraction numerical simulation |
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