Diffusion Bonding of Ti-6Al-4V Sheet with Ti-6Al-4V Foam for Biomedical Implant Applications

Hamilton, Brittany; Oppenheimer, Scott M.; Dunand, David C.; Lewis, Daniel

doi:10.1007/s11663-013-9942-5

Cited by 4 publications

(1 citation statement)

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“…Since diffusion bonding is caused by atomic migration across a solid-state interface, there are theoretically no microstructural discontinuities at the interface region and, consequently, the mechanical properties and microstructure in the bonded region are no different from those of the base metal. In addition, when differences exist between the two materials to be joined, the interface zone would be able to mediate their properties [1]. DB can be considered a valid solution in obtaining joints in materials, such as Ti alloys, usually difficult by conventional techniques [2].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing of a hybrid component in Ti6Al4V-ELI alloy by combining diffusion bonding and superplastic forming

GUGLIELMI

2023

Materials Research Proceedings

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Abstract. Through Diffusion Bonding (DB) large surfaces can be joined with low distortions and localized microstructural changes. Heterogeneous Titanium (Ti) components, composed, for example, by a porous layer over a bulk one, which play a key role for biomedical applications, can be obtained. In the present work, the possibility to combine the SuperPlastic Forming (SPF) process (for creating the part’s shape) and the DB process (for joining two different layers) is investigated. In particular, the porous layer was obtained by solid state foaming, made possible thanks to a heat treatment set on a slice cut from a billet produced by compacting Ti powders via Hot Isostatic Pressing (HIP). SPF was used to shape both the Ti sheet and the slice cut from the HIPed billet. Since the SPF is conducted at high temperature, a porous structure could be obtained in the HIPed material (solid state foaming occurred); setting the proper pressure and time, the two layers could be successfully joined by DB. All the investigated pressure levels revealed to be able to produce a complete solid state joint, without any discontinuity; in addition, the final hybrid component could be manufactured according to the desired geometry.

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Section: Introductionmentioning

confidence: 99%