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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Solid State Diffusion Bonding of Metals and Alloys
Presentation Title Effect of hydrogen addition on the diffusion bonding behavior of titanium alloys
Author(s) Xifeng Li, Fuhui Zhu, Huiping Wu, Jun Chen
On-Site Speaker (Planned) Xifeng Li
Abstract Scope 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.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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Effect of hydrogen addition on the diffusion bonding behavior of titanium alloys
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