Microstructure and interfacial strength of SiC fiber-reinforced Ti17 alloy composites with different consolidation temperatures

作者：Wang, Min-Juan; Huang, Hao; Li, Hu; Zhang, Shu-Ming; Wen, Mao; Song, Cheng; Pan, Feng^*

来源：Rare Metals, 2018, 37(9): 759-768.

DOI：10.1007/s12598-018-1002-5

• SiCf/Ti composite
• Interfacial reaction
• Microstructure
• Property

The interfacial reaction and titanium matrix microstructure in continuous SiC fiber-reinforced titanium matrix composite were investigated. By comparison of two samples actuated by 800 A degrees C (in alpha + beta dual-phase field) and 920 A degrees C (in beta single-phase field) consolidation, it can be concluded that tri-layer interfacial reaction regions consisting of fine TiC (x) /transition TiC (x) /coarse TiC (x) are formed in both two samples. In addition, the total thickness of reaction layer for composites prepared at 920 A degrees C is thicker than that consolidated at 800 A degrees C, while fine TiC (x) layer of 920 A degrees C sample is thinner than that of 800 A degrees C sample, which may be ascribed to the quick growth of PVD-Ti17 grain manufactured at 920 A degrees C. In addition, lower interfacial shear strength is obtained in 920 A degrees C sample, which can be ascribed to the formation of too thick brittle TiC layer. The research in the work is expected to motivate further exploration for interface adjustment of titanium matrix composites.

• 出版日期2018-9
• 单位中国航发北京航空材料研究院; 吉林大学; 清华大学