Diffusion bonding of gamma-based titanium aluminides
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Cesar Buque
Abstract
The paper describes a detailed analysis of diffusion bonding in a binary titanium aluminide alloy of composition Ti-45Al (at.%). The study involves scanning electron microscopy coupled with chemical microanalysis and electron backscattered diffraction (EBSD). Diffusion bonding leads to the formation of a thin layer of a2(Ti3Al) phase at the bonding interface and to a remarkable redistribution of the phase constitution. The micromechanisms behind these phenomena will be discussed with regard to the phase transformations and diffusion processes involved.
Abstract
Der Beitrag beschreibt eine detaillierte Analyse zum Diffusionsschweißen einer binären Titanaluminid-Legierung mit der Zusammensetzung Ti-45Al (at.%). Hierzu wurden Untersuchungen mit Hilfe von Raster-Elektronenmikroskopie durchgeführt, die durch chemische Mikroanalyse und EBSD-Analytik ergänzt wurden. Das Diffusionsschweißen führt in der Verbindungsfläche zur Ausbildung einer dünnen Schicht der a2(Ti3Al)-Phase und zu einer beträchtlichen Umordnung der Phasenverteilung. Die mit diesen Phänomenen in Zusammenhang stehenden Mikromechanismen werden hinsichtlich der beteiligten Phasentransformationen und Transportprozesse diskutiert.
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© 2002 Carl Hanser Verlag, München
Artikel in diesem Heft
- Frontmatter
- Articles/Aufsätze
- Peierls barriers, kinks, and flow stress: Recent progress
- Positron annihilation spectroscopy – a non-destructive method for lifetime prediction in the field of dynamical material testing
- Diffusion bonding of gamma-based titanium aluminides
- A nanotheory of the intense slip localization causing metal fatigue
- Dislocation and surface structures of copper and very-low-carbon steel at low fatigue amplitudes
- Effect of hafnium on the castability of directionally solidified nickel-base superalloys
- Polysiloxane-derived ceramic foam for the reinforcement of Mg alloy
- Biomechanical behaviour of implant-reinforced subcapital humeral fractures
- Thermodynamic modeling of the Ni – In system
- Oxidation of metals investigated by in situ surface sensitive X-ray diffraction
- Embrittlement of Cu [001] symmetric tilt boundaries induced by Sb segregation
- The microstructure of a Mg-10 wt.% Al alloy
- Notifications/Mitteilungen
- Personal/Personelles
- Books/Bücher
- Books/DGM
- Conferences/Konferenzen
Artikel in diesem Heft
- Frontmatter
- Articles/Aufsätze
- Peierls barriers, kinks, and flow stress: Recent progress
- Positron annihilation spectroscopy – a non-destructive method for lifetime prediction in the field of dynamical material testing
- Diffusion bonding of gamma-based titanium aluminides
- A nanotheory of the intense slip localization causing metal fatigue
- Dislocation and surface structures of copper and very-low-carbon steel at low fatigue amplitudes
- Effect of hafnium on the castability of directionally solidified nickel-base superalloys
- Polysiloxane-derived ceramic foam for the reinforcement of Mg alloy
- Biomechanical behaviour of implant-reinforced subcapital humeral fractures
- Thermodynamic modeling of the Ni – In system
- Oxidation of metals investigated by in situ surface sensitive X-ray diffraction
- Embrittlement of Cu [001] symmetric tilt boundaries induced by Sb segregation
- The microstructure of a Mg-10 wt.% Al alloy
- Notifications/Mitteilungen
- Personal/Personelles
- Books/Bücher
- Books/DGM
- Conferences/Konferenzen
