TY - GEN
T1 - The Finite Element Simulation of Diffusion Bonding for TiAl/Ti 2 AlNb Annular Structural Component
AU - Zhang, Xiaoqiang
AU - Tang, Bin
AU - Li, Jinshan
AU - Kou, Hongchao
N1 - Publisher Copyright:
© 2019, Springer Nature Singapore Pte Ltd.
PY - 2019
Y1 - 2019
N2 - Diffusion bonding is an effective method that can avoid microcracks and reduce residual stress obtained between dissimilar materials, so it is chosen for the preparation of TiAl/Ti 2 AlNb annular component. A new diffusion bonding method is proposed to obtain sufficient and adjustable bonding pressure on the annular interface. The bonding interface is designed as oblique surface, which allows TiAl part dropping. The diffusion bonding finite element (FE) model is established, and the influences of dropping distance and cone angle on bonding pressure are investigated and optimized. The results show that the bonding pressure generates after the dropping and gets stable during the holding. Too large cone angle will cause great bonding pressure difference along the interface. Considering the machine precision, the ideal cone angle is 3°. The best dropping distance is about 3–4% of the radius of the Ti 2 AlNb component, which will obtain sufficient bonding pressure and avoid great stress concentration at the interface.
AB - Diffusion bonding is an effective method that can avoid microcracks and reduce residual stress obtained between dissimilar materials, so it is chosen for the preparation of TiAl/Ti 2 AlNb annular component. A new diffusion bonding method is proposed to obtain sufficient and adjustable bonding pressure on the annular interface. The bonding interface is designed as oblique surface, which allows TiAl part dropping. The diffusion bonding finite element (FE) model is established, and the influences of dropping distance and cone angle on bonding pressure are investigated and optimized. The results show that the bonding pressure generates after the dropping and gets stable during the holding. Too large cone angle will cause great bonding pressure difference along the interface. Considering the machine precision, the ideal cone angle is 3°. The best dropping distance is about 3–4% of the radius of the Ti 2 AlNb component, which will obtain sufficient bonding pressure and avoid great stress concentration at the interface.
KW - Annular structural component
KW - Diffusion bonding
KW - Finite element simulation
KW - TiAl
UR - https://www.scopus.com/pages/publications/85062077077
U2 - 10.1007/978-981-13-5944-6_49
DO - 10.1007/978-981-13-5944-6_49
M3 - 会议稿件
AN - SCOPUS:85062077077
SN - 9789811359439
T3 - Springer Proceedings in Physics
SP - 495
EP - 503
BT - Physics and Engineering of Metallic Materials - Proceedings of Chinese Materials Conference 2018
A2 - Han, Yafang
PB - Springer Science and Business Media, LLC
T2 - Chinese Materials Conference, CMC 2018
Y2 - 12 July 2018 through 16 July 2018
ER -