Ti-6Al-4V/Al_3Ti金属间化合物基层状复合材料残余应力分析  

Residual stress analysis of Ti-6Al-4V/Al_3Ti intermetallic laminate composites

作　　者：史明东 原梅妮[1] 何小晶 陈贺贺[1] SHI Mingdong YUN Meini HE Xiaojing CHEN Hehe(College of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, China)

机构地区：[1]中北大学机电工程学院,山西太原030051

出　　处：《兵器材料科学与工程》2017年第2期47-51,共5页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51201155);山西省自然科学基金(2012011019-1);教育部新教师基金(20101420120006)

摘　　要：利用ANSYS有限元软件数值模拟不同微观结构的Ti6Al4V/Al_3Ti金属间化合物基层状复合材料的残余应力,分析复合材料层内残余应力分布特征及微观结构参数对层内残余应力的影响。结果表明:Ti6Al4V/Al_3Ti层状复合材料中各层的残余应力在对称中心点处最大,在接近材料边缘处迅速降到最低,各层内残余应力沿界面法线方向无应力梯度变化;在总厚度不变的情况下,通过增加层厚比和层数可改善Ti6Al4V/Al_3Ti金属间化合物基层状复合材料中的残余应力分布,但层厚比对复合材料层内的残余应力影响更为明显。The distribution of residual stress of Ti6Al4V/Al_3 Ti intermetallic laminate composites with different microstructures was simulated by ANSYS. The effects of layer thickness ratio and stack layers on residual stress were discussed. The results show that the maximum absolute value of residual stress is in the symmetric center point of the composite,and the lowest value of residual stress is near the edge;the residual stress of every layer in the direction perpendicular to the interface has little changes.Under the same total thickness,the increase of layer thickness ratio and stack layers can effectively improve the distribution of residual stress,and the layer thickness ratio has more influence on the residual stress than the stack layers.

关 键 词：金属间化合物基层状复合材料 残余应力 有限元 分布特征 微观结构 

分 类 号：TB333[一般工业技术—材料科学与工程]