建立了颗粒增强铝基复合材料的轴对称单胞模型,并通过有限元方法模拟了 B4 C 颗粒增强5083铝基复合材料的力学性能和微观应力分布。结果表明,模拟结果与实验结果吻合较好,模拟椭球体颗粒增强复合材料的抗拉强度为485 MPa,而实验值为477 MPa,相对误差仅为1.7%。颗粒形状对复合材料微观应力场有很大影响：圆柱体颗粒的尖角处容易造成应力集中,而球体颗粒界面处应力分布较为均匀。在一定范围内,复合材料的弹性模量和抗拉强度随着B4 C颗粒体积分数的增加而增加。在颗粒体积分数不变的情况下,不同长径比的颗粒沿复合材料受力方向定向排列时,颗粒的长径比越大,复合材料的弹性模量、强度等力学性能也越高。
An axisymmetric unit cell model of particle reinforced Al matrix composites was established,and the me-chanical behaviors and micro-stress distribution of B4 C particles reinforced Al5083 matrix composites were simulated by finite element method.The results show that the simulation result agrees well with the experimental result.The simulated tensile stress of spheroidicity particle reinforced composites is 485 MPa,while the experimental value is 477 MPa,indicating a relative error as low as 1.7%.Particle shapes have a significant influence on the micro-stress field of composites:the sharp edge of cylindrical particle leads to a stress concentration easily,while the spherical particle results in a relatively uniform stress distribution at the interface.Elastic modulus as well as tensile strength of the composites increase with the increase of volume fraction for B4 C particle in a certain range.In the case of con-stant particle volume fraction,when the particles with different aspect ratios are aligned along the load direction,the larger the aspect ratio of particles,the higher the elastic modulus and tensile strength of composites.
参考文献
| [1] | 程光旭;李峰;李志军.颗粒增强铝基复合材料细观损伤演化特征及最弱环损伤模型[J].复合材料学报,2002(6):31-36. |
| [2] | 苏大为;赵玉涛;陈刚;周堃;汪煦.数值模拟在金属基复合材料铸造性能研究上的应用[J].复合材料学报,2009(4):89-94. |
| [3] | Mohsen Ostad Shabani;Ali Mazahery.Optimization of process conditions in casting aluminum matrix composites via interconnection of artificial neurons and progressive solutions[J].CERAMICS INTERNATIONAL,20126(6):4541-4547. |
| [4] | JICHUN YE;JIANHONG HE;JULIE M. SCHOENUNG.Cryomilling for the Fabrication of a Particulate B_4C Reinforced Al Nanocomposite: Part I. Effects of Process Conditions on Structure[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,200610(10):3099-3109. |
| [5] | Hai Su;Wenli Gao;Zhaohui Feng;Zheng Lu.Processing, microstructure and tensile properties of nano-sized Al_2O_3 particle reinforced aluminum matrix composites[J].Materials & design,2012Apr.(Apr.):590-596. |
| [6] | FLAVIO DE ANDRADE SILVA;JASON J. WILLIAMS;BERND R. MULLER;MANFRED P. HENTSCHEL;PEDRO D. PORTELLA;NIKHILESH CHAWLA.Three-Dimensional Microstructure Visualization of Porosity and Fe-Rich Inclusions in SiC Particle-Reinforced Al Alloy Matrix Composites by X-Ray Synchrotron Tomography[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,20108(8):2121-2128. |
| [7] | JICHUN YE;ZONGHOON LEE;BYUNGMIN AHN.Cryomilling for the Fabrication of a Particulate B_4C Reinforced Al Nanocomposite: Part II. Mechanisms for Microstructural Evolution[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,200610(10):3111-3117. |
| [8] | Wang, Z.;Song, M.;Sun, C.;He, Y..Effects of particle size and distribution on the mechanical properties of SiC reinforced Al-Cu alloy composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20113(3):1131-1137. |
| [9] | E. Mohammad Sharifi;F. Karimzadeh;M.H. Enayati.Fabrication and evaluation of mechanical and tribological properties of boron carbide reinforced aluminum matrix nanocomposites[J].Materials & design,20116(6):3263-3271. |
| [10] | Zhang, Yuzheng;Topping, Troy D.;Yang, Hanry;Lavernia, Enrique J.;Schoenung, Julie M.;Nutt, Steven R..Micro-strain Evolution and Toughening Mechanisms in a Trimodal Al-Based Metal Matrix Composite[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,20153(3):1196-1204. |
| [11] | 徐娜;宗亚平;张芳;杨玉芳.颗粒形状对铝基复合材料力学行为影响的模拟[J].东北大学学报（自然科学版）,2007(2):213-216. |
| [12] | Galina Lasko;Ulrich Weber;Siegfried Schmauder.Finite Element Simulations of Crack Propagation in Al2O3/6061Al Composites[J].金属学报（英文版）,2014(5):853-861. |
| [13] | K. M. Shorowordi;T. Laoui;A. S. M. A. Haseeb;J. P. Celis;L. Froyen.Microstructure and interface characteristics of B{sub}4C, SiC and Al{sub}2O{sub}3 reinforced Al matrix composites: a comparative study[J].Journal of Materials Processing Technology,20033(3):738-743. |
| [14] | A. Piers Newbery;Steven R. Nutt;Enrique J. Lavernia.Multi-Scale Al 5083 for Military Vehicles with Improved Performance[J].JOM,20064(4):56-61. |
| [15] | Andrew Magee;Leila Ladani;Troy D. Topping.Effects of tensile test parameters on the mechanical properties of a bimodal Al-Mg alloy[J].Acta materialia,201216(16):5838-5849. |
| [16] | C.-W. NAN;D. R. CLARKE.THE INFLUENCE OF PARTICLE SIZE AND PARTICLE FRACTURE ON THE ELASTIC/PLASTIC DEFORMATION OF METAL MATRIX COMPOSITES[J].Acta materialia,19969(9):3801-3811. |
| [17] | DONGMING LIU;YUHONG XIONG;TROY D. TOPPING.Spark Plasma Sintering of Cryomilled Nanocrystaliine Al Alloy - Part II: Influence of Processing Conditions on Densification and Properties[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,20121(1):340-350. |
| [18] | Y.W. Yan;L. Geng;A.B. Li.Experimental and numerical studies of the effect of particle size on the deformation behavior of the metal matrix composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20071/2(1/2):315-325. |
| [19] | 肖新华;蔺绍江;殷亚军.颗粒形状对复合材料拉伸力学行为影响的有限元模拟[J].热加工工艺,2013(20):116-118. |
| [20] | C. R. Chen;S. Y. Qin;S. X. Li;J. L. Wen.Finite element analysis about effects of particle mrphology on mechanical response of composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20001/2(1/2):96-105. |
| [21] | S.G. SONG;N. SHI;G.T. GRAY III;J.A. ROBERTS.Reinforcement Shape Effects on the Fracture Behavior and Ductility of Particulate-Reinforced 6061-Al Matrix Composites[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,199611(11):3739-3746. |
| [22] | N. Chawla;Yu. -Lin. Shen.Mechanical behavior of particle reinforced metal matrix composites[J].Advanced Engineering Materials,20016(6):357-370. |
| [23] | G. Meijer;F. Ellyin;Z. Xia.Aspects of residual thermal stress/strain in particle reinforced metal matrix composites[J].Composites, Part B. Engineering,20001(1):29-37. |
| [24] | Saraev D.;Schmauder S..Finite element modelling of Al/SiCP metal matrix composites with particles aligned in stripes - a 2D-3D comparison[J].International Journal of Plasticity,20036(6):733-747. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%