|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Solid State Diffusion Bonding of Metals and Alloys
||Effect of hydrogen addition on the diffusion bonding behavior of titanium alloys
||Xifeng Li, Fuhui Zhu, Huiping Wu, Jun Chen
|On-Site Speaker (Planned)
Hydrogen as a temporary alloying element can be used as a powerful tool in optimizing microstructure and mechanical properties of titanium alloys. In this study, the effect of hydrogen addition on the diffusion bonding behaviors of Ti-55 titanium alloy and Ti2AlNb/TC4 titanium alloys were studied. The DSC/DTA and XRD results shows hydrogen can escape from titanium alloys under the conditions of high temperature and vacuum. The diffusion bonding ratios of Ti-55 titanium alloy are remarkably improved by hydrogenation at relatively low temperature (700℃). In addition, hydrogen addition can prominently increase the bonding interface strengths of Ti2AlNb/TC4 titanium alloys through rapid heating. The residual hydrogen content is a key factor for improving the diffusion bonding properties by hydrogenation. Both low temperature bonding and rapid heating aim to hinder the hydrogen desorption during diffusion bonding process.
||Planned: Supplemental Proceedings volume