%0 conference lecture
%@ 
%A Schütte, M., Ehrich, J., Roos, A., Linsler, D., Hanke, S.

%D 2020
%J Materials Science and Engineering Congress (MSE) 2020

 

%T Sliding wear of Si-rich Al-base alloys in wrought state after Friction Surfacing
%U 
 
%X At 14.6 % Si, large primary Si phases are present in both material states. Here, higher coefficients of friction were observed (≈ 0.1), than for the other two materials (≈ 0.04). At the same time, the wear volume is lowest for the high-Si alloy, and shows no difference between the cast and FS-processed state. Microscopy shows fracturing of Si phases as well as deformation and cracking in the adjacent Al-rich matrix. Spheroidization of the Si phases during FS in the two hypoeutectic alloys (6.6 and 10.4% Si) leads to a reduction in wear by more than 50 % compared to the cast state. This study shows that applying wear resistant coatings from Si-rich Al-base alloys by FS is feasible, with comparable wear behaviour for hypereutectic and improved wear resistance for hypoeutectic alloys.