多孔氧化铝颗粒对铝基复合材料弹性模量的影响  

Effect of Porous Alumina Particles on Elastic Modulus of Aluminum Matrix Composites

作　　者：崔岩 黄植 曹雷刚 杨越 刘园 CUI Yan;HUANG Zhi;CAO Leigang;YANG Yue;LIU Yuan(School of Mechanical and Materials Engineering,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学机械与材料工程学院,北京100144

出　　处：《热加工工艺》2023年第8期83-86,共4页Hot Working Technology

基　　金：国家重点研发计划项目(2017YFB0703102);北方工业大学基本科研业务费项目(110052971921/040)。

摘　　要：选用平均粒径70μm的多孔氧化铝颗粒作为增强体,采用无压浸渗法制备Al_(2)O_(3)p/Al复合材料,研究多孔Al_(2)O_(3)颗粒对复合材料微观组织和力学性能的影响。结果表明,复合材料多孔氧化铝体积分数、抗弯强度和弹性模量分别为30.27vol%、317.31 MPa和137.32 GPa。有限元分析表明,相同体积分数致密氧化铝颗粒对应的复合材料弹性模量仅为106.58 GPa,采用多孔氧化铝可以在不增加增强相体积分数的前提下提升材料的弹性模量。Porous alumina particles with an average diameter size of 70μm were selected as reinforcement.Al_(2)O_(3)p/Al composites were prepared by pressureless infiltration in order to investigate the effects of porous alumina particles on the microstructure and mechanical properties of the composites.The results show that the volume fraction,flexural strength and elastic modulus of the porous alumina composites are 30.27vol%,317.31 MPa and 137.32 GPa,respectively.Finite element analysis shows that the elastic modulus of the composites corresponding to dense alumina particles with the same volume fraction is only 106.58 GPa,using porous alumina can enhance the elastic modulus of the material without increasing the volume fraction of the enhanced phase.

关 键 词：多孔颗粒 复合材料 力学性能 有限元分析 

分 类 号：TB333.12[一般工业技术—材料科学与工程]