%0 conference paper
%@ 
%A Fitseva, V., Hanke, S., dos Santos, J.F.

%D 2016
%J Proceedings of 30th International Conference on Surface Modification Technologies, SMT 30

%P 96 

%T Influence of rotational speed on process characteristics, material flow and microstructure evolution in Friction Surfacing of Ti-6Al-4V
%U 
 
%X The current work focuses on deposition of Ti-6Al-4V coatings. For this material the process parameter rotational speed plays a significant role in the material’s response during processing. Two different regimes with a threshold at 2000 min-1 exist, upon which the flow behaviour of Ti-6Al-4V significantly differs, affecting amongst others the coating dimensions. Microstructural analysis reveals that the material is deformed in high temperature β phase, and the high cooling rates (46.4 Ks-1) lead to martensitic transformation. The β grain size differs in the low and high rotational speed regime. This study shows that metallurgical processes play an important role in Friction Surfacing, since they influence all relevant process characteristics, including microstructure, material efficiency and process forces.