摘要
基于Mori-Tanaka均匀化方法及Eshelby等效夹杂理论建立了解析计算模型,用以预测多相各向异性TiB_2增强钢复合材料的力学性能,并系统研究了增强体的长径比、体积分数和取向对复合材料横向和纵向弹性模量的影响。结果表明:建立的模型可以准确预测多种不同金属基复合材料的弹性模量;大的长径比可以显著提高TiB_2增强钢复合材料的纵向弹性模量,且只造成横向弹性模量少量损失;增强相体积分数与弹性模量呈正相关;纵向弹性模量随着增强体排列方向与载荷方向之间夹角的增大而先增大后减小。
An analytical computational model was built based on the Mori-Tanaka method and Eshelby′s equivalent inclusion principle,which was used to predict mechanical properties of multi-phase anisotropic TiB_2 reinforced steel composite,and the effects of reinforcement′s aspect ratio,volume fraction and orientation on longitudinal and transverse elasticity modulus of the composite were studied.Results show that the analytical model can predict different kinds of metal-matrix composites with high level precision.The reinforcements with larger aspect ratio can significantly raise the composite′s longitudinal modulus,while diminishing the transverse modulus only by a small amount.The volume fraction of reinforcement always has a positive correlation with elasticity modulus.With the increase of the angle between the alignment of the reinforcement and the loading direction,the longitudinal modulus increases first and then decreases.
作者
李涵
金学军
赵洪山
LI Han JIN Xue-jun ZHAO Hong-shan(School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai Z00240 CNAM, Arts et Metiers ParisTeeh, Paris 75014, France)
出处
《机械工程材料》
CAS
CSCD
北大核心
2017年第1期90-95,106,共7页
Materials For Mechanical Engineering
基金
国家自然科学基金资助项目(U1564203)
国家重点研究计划资助项目(2016YFB0300601)
