Microstructural Characterization of Friction Welded TiAl-Ti6Al4V Hybrid Joints

Volker Ventzke; Heinz Günter Brokmeier; Peter Merhof; Mustafa Koçak

doi:10.4028/www.scientific.net/SSP.160.319

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Microstructural Characterization of Friction Welded TiAl-Ti6Al4V Hybrid Joints
p.319

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Microstructural Characterization of Friction Welded TiAl-Ti6Al4V Hybrid Joints

Abstract:

This paper describes microstructure and microtexture development in dissimilar friction welded -TAB-Ti64 joints. The effect of friction welding parameters on microstructure and local properties are examined and discussed. It was found that the intermetallic -TiAl based alloy Ti-47Al-3.5(Mn+Cr+Nb)-0.8(B+Si) (denoted as -TAB) is more sensitive to the applied friction welding parameters used in this study. Furthermore, the bonding between these two alloys was controlled by a diffusion process during a very short process duration. Grain refinement as well microstructure transformation led to local improvement of the friction-welded joints.

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Periodical:

Solid State Phenomena (Volume 160)

Pages:

319-326

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.160.319

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Online since:

February 2010

Authors:

Volker Ventzke, Heinz Günter Brokmeier, Peter Merhof, Mustafa Koçak

Keywords:

Dissimilar Friction Welding, Microhardness, Microstructure, Microtexture, Ti6Al4V, γ-TiAl

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