| 颗粒增强金属基复合材料微屈服行为的细观力学计算 |
| |
| 引用本文： | 吴晶,李文芳,蒙继龙. 颗粒增强金属基复合材料微屈服行为的细观力学计算[J]. 材料科学与工程学报, 2003, 21(1): 21-25 |
| |
| 作者姓名： | 吴晶 李文芳 蒙继龙 |
| |
| 作者单位： | 华南理工大学机械工程学院,广州,510641;华南理工大学机械工程学院,广州,510641;华南理工大学机械工程学院,广州,510641 |
| |
| 基金项目： | 国家自然科学基金，19972021， |
| |
| 摘 要： | 本文采用细观力学模型 ,计算了颗粒增强金属基复合材料的微屈服行为规律。计算模型是以有限元法、应力二阶矩的割线模量法、Eshelby等有效夹杂方法和双夹杂模型等为基础。计算结果表明在基体材料的微屈服规律符合Brown Lukens线性规律的情况下 ,颗粒增强金属基复合材料的σ 〈εp〉1 2 关系也近似呈线性符合Brown Lukens规律。同时计算了增强体颗粒的含量、热残余应力和位错密度等多方面因素对复合材料微屈服规律的影响。
|
| 关 键 词： | MMC 微屈服 细观力学 |
| 文章编号： | 1004-793X(2003)01-0021-05 |
| 修稿时间： | 2002-07-25 |
Micromechanics Computation of Microyield Behavior of Particle Reinforced Metal Matrix Composites |
| |
| WU Jing,LI Wen-fang,MENG Ji-long. Micromechanics Computation of Microyield Behavior of Particle Reinforced Metal Matrix Composites[J]. Journal of Materials Science and Engineering, 2003, 21(1): 21-25 |
| |
| Authors: | WU Jing LI Wen-fang MENG Ji-long |
| |
| Abstract: | The particle reinforced MMC's microyield behavior is computed by micromechanics model.The micromechanics model is based on the finite element method,secant moduli method,Eshelby's equivalent method and double-inclusion model,etc.The result shows that if the matrix material accords with Brown-Luken's relation,the MMC's microyield behavior accords with it too.The MMC's microyield strength is lower than that of the matrix material.The influencing factors such as particle volume fraction,density of dislocation in the process of MMC's microyield are studied quantitatively. |
| |
| Keywords: | MMC microyield micromechanics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
