Fabrication of Ti/Al/Mg laminated composites by hot roll bonding and their microstructures and mechanical properties  

作　　者：Pengju WANG Zejun CHEN Hongtao HUANG Jianshu LIN Boxin LI Qing LIU 

机构地区：[1]College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China [2]State Key Laboratory of Mechanical Transmissions,Chongqing University,Chongqing 400044,China

出　　处：《Chinese Journal of Aeronautics》2021年第8期192-201,共10页中国航空学报（英文版）

基　　金：financial supports from the National Natural Science Foundation of China(No.51421001);the National High Technology Research and Development Program of China(863 Program,No.2013AA031304);the Fundamental Research Funds for the CentralUniversitiesofChina(2019CDQYCL001,2019CDCGCL204,2020CDJDPT001);the Research Project of State Key Laboratory of Vehicle NVH and Safety Technology of China(No.NVHSKL-201706)。

摘　　要：Ti/Al/Mg laminated composites were successfully fabricated by hot roll bonding.The effects of the rolling reduction on the microstructural evolution and mechanical properties of the composites were explored.The results show that Ti/Al/Mg laminated sheets exhibit good interfacial bonding.The rolling reduction has a significant effect on the deformation inhomogeneity through the thickness of the Al layer.The initial grains of the Al layer near the Ti/Al interface are fragmented into fine equiaxed grains,and the grains at the center and near the Al/Mg interface are elongated.The R-cube shear texture of the Al layer forms near the Ti/Al interface and permeates into the center layer in the samples with greater rolling reductions.The b-fiber rolling texture of the Al layer is observed near the Al/Mg interface and increases with the increase of rolling reduction.The stress–strain curves indicate that the fracture appears first in the Mg layer.With the increasing rolling reduction,the ultimate tensile and yield strength values increase,and the elongation up to the Mg layer fracture decreases.

关 键 词：Al texture Hot roll bonding Interfacial microstructure Mechanical property Ti/Al/Mg laminated sheet 

分 类 号：TB331[一般工业技术—材料科学与工程]