增强相形态对金属基复合材料力学性能的影响

英文篇名：The Effect of Particle Morphology on Mechanical Properties of Metal Matrix Composites
中文刊名：有色金属(冶炼部分)
英文刊名：Nonferrous Metals(Extractive Metallurgy)
作者：孔令超 ; 宋卫东 ; 宁建国 ; 毛小南
英文作者：KONG Ling-chao1 ; SONG Wei-dong1 ; NING Jian-guo1 ; MAO Xiao-nan2(1.State Key Laboratory of Explosion Science and Technology ; Beijing Institute of Technology ; Beijing 100081 ; China ; 2.Northwest Institute for Nonferrous Metal Research ; Xi'an 710016 ; China)
中文关键词：不动点迭代 ; 复合材料 ; 增强相形态 ; 数值模拟
英文关键词：Fixed point iteration ; Composites ; Particle morphology ; Numerical simulation
出版日期：2008-12-12
机构：北京理工大学爆炸科学与技术国家重点实验室;西北有色金属研究院;
年：2008
期：06
出版单位：有色金属(冶炼部分)

摘要

基于不动点迭代理论提出了一种根据复合材料微观结构分析宏观力学性能的数值方法。将该方法与有限元分析相结合,对TiC颗粒增强钛基复合材料的弹塑性拉伸行为进行了数值模拟,研究了颗粒形状和颗粒大小的变化对复合材料宏观力学性能的影响。结果显示,颗粒形状对复合材料力学性能的影响不大;随着颗粒大小的增加,复合材料的弹性模量、屈服强度和强化模量等均明显提高。
Based on the fixed point iteration theory,a numerical method for macroscopic mechanical behavior of composites according to microstructures was proposed.Combining it with FEM,numerical simulations of the elastic-plastic tensile properties of TiC particle reinforced titanium matrix composites were carried out.The effect of particle shape and particle size on the macroscopic mechanical properties of composites was investigated.The results show that the influence of particle shape on mechanical properties of composites was not very evident,while with the particle size increasing,the Young's modulus,the yield strength and the plastic hardening modulus of composites increase significantly.

引文

[1]Bao G,Lin Z High strain rate deformation in particle re-inforced metal matrix composites[J].Acta mater.,1996,44(3):1011-1019.
    [2]Yang J,Pickard S M,Cady C.The stress/strain behav-ior of aluminum matrix composites with discontinuous re-inforcements[J].Acta Metall Mater.,1991,39(8):1863-1869.
    [3]徐绯,李玉龙,郭伟国,等.颗粒形状、含量和基体特性对金属基复合材料压缩力学行为的影响[J].复合材料学报,2003,20(6):36-41.
    [4]丁向东,刘刚,王瑞红,等.颗粒增强金属基复合材料的屈服行为[J].金属学报,2003,28(4):369-375.
    [5]贾乃文.粘塑性力学及工程应用[M].北京:地震出版社,2000.
    [6]克雷斯齐格(Kreyszing E)(加).泛函分析导论及应用[M].北京:北京航空学院出版社,1987.
    [7]姜芳.颗粒增强钛基复合材料的力学性能研究[D].北京:北京理工大学,2006.