Microstructure and Mechanical Properties of TiBw/TA15 Composite Sheet
WANG Fuxin1 , FU Mingjie1 , QIAN Jianhang 1,2, ZENG Yuansong1 , HAN Xiuquan1
(1. AVIC Manufacturing Technology Institute, Beijing 100024, China; 2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)
Abstract：TiB whisker reinforced titanium matrix composite has a wide range of potential applications in aircraft skin, frame beam and other components due to its excellent high temperature performance. The effect of rolling deformation on the microstructure and properties of TiBw/TA15 composite was studied. The microstructure of TiBw/TA15 composite sheets was analyzed by OM and SEM. It was found that the microstructure of TiBw/TA15 composite sheet is fine, and TiB whiskers are uniformed distributed. But the micro cracks formed by the deformation of TiBw phase are obviously observed. By analyzing the mechanical properties, it was found that the tensile strength of TiBw/TA15 composite sheet is 10% higher than that of the slab at room temperature and 600-650℃. The tensile strain at room temperature increases from 4.8% to 8% after rolling deformation. The high temperature endurance property of TiBw/ TA15 composite sheets is similar with that of the slab. While rolling deformation has little effect on the high temperature durability.
2021, 
