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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 8/2016

25.05.2016

Microstructural Characterization of Diffusion Bonds Assisted by Ni/Ti Nanolayers

verfasst von: Sónia Simões, Filomena Viana, A. Sofia Ramos, M. Teresa Vieira, Manuel F. Vieira

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 8/2016

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Abstract

The microstructure of similar and dissimilar diffusion bonds of metallic materials using reactive Ni/Ti interlayers was studied in this investigation. The base material surfaces were modified by sputter deposition of alternated Ni and Ti nanolayers. These nanolayers increase the diffusivity at the interface, enhancing the bonding process. Bonding experiments were performed at 800 °C under a pressure of 10 MPa with a bonding time of 60 min. The reaction zone was characterized by high-resolution scanning and transmission electron microscopies. Microstructural characterization reveals that similar (NiTi to NiTi and TiAl to TiAl) and dissimilar (NiTi to Ti6Al4V and TiAl to stainless steel) joints can be obtained successfully with Ni/Ti reactive nanolayers. The interfaces are thin (<10 µm) and their microstructure (thickness and number of zones, size and shape of the grains) depends on the elements diffusing from the base materials. For all joints, the interface is mainly composed of equiaxed grains of NiTi and NiTi2.
Vorheriger Artikel Stress Engineering of Multi-pass Welds of Structural Steel to Enhance Structural Integrity
Nächster Artikel Mechanical Properties of Solid-State Recycled 4xxx Aluminum Alloy Chips

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Metadaten
Titel
Microstructural Characterization of Diffusion Bonds Assisted by Ni/Ti Nanolayers
verfasst von
Sónia Simões
Filomena Viana
A. Sofia Ramos
M. Teresa Vieira
Manuel F. Vieira
Publikationsdatum
25.05.2016
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 8/2016
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-016-2135-z

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