scholarly journals Wear and mechanical properties of 6061-T6 aluminum alloy surface hybrid composites [(SiC+Gr) and (SiC+Al2O3)] fabricated by friction stir processing

2013 ◽  
Vol 2 (4) ◽  
pp. 362-369 ◽  
Author(s):  
Devaraju Aruri ◽  
Kumar Adepu ◽  
Kumaraswamy Adepu ◽  
Kotiveerachari Bazavada
Author(s):  
A. Kumar ◽  
A. Devaraju ◽  
B. Kotiveerachari

In this investigation, the influence of tool rotational speed on wear and mechanical properties of Aluminum alloy based surface hybrid composites fabricated via Friction stir processing (FSP) was studied. The fabricated surface hybrid composites have been examined by optical microscope for dispersion of reinforcement particles. Microstructures of all the surface hybrid composites revealed that the reinforcement particles (SiC, Gr and Al2O3) are uniformly dispersed in the nugget zone. It is observed that the microhardness is decreased with increasing the rotational speed and exhibited higher microhardness value in Al-SiC/Al2O3 surface hybrid composite at a rotational speed of 900 rpm, due to presence and pining effect of hard SiC and Al2O3 particles. It is also observed that high wear resistance exhibited in the Al-SiC/Gr surface hybrid composites at a rotational speed of 900 rpm due to presence of SiC and Gr acted as load bearing elements and solid lubricant respectively. The observed wear and mechanical properties have been correlated with microstructures and worn morphology.


2015 ◽  
Vol 1095 ◽  
pp. 612-615
Author(s):  
Ying Ze Fang ◽  
Xiao Ping Zhou ◽  
Feng Xu

This Four passes processing to the thermal spray aluminum coating on the aluminum alloy surface,based on friction stir processing (FSP). Applications SEM, EDS and micro hardness testing to analysis the coatings that have been processed and haven't been processed. The results show that , after the friction stir processing,dense ultrafine grained aluminum with the sizes less than 200nm is obtain ,and replace original laminated and porous coating . Fusion utilizes between the coating and the substrate, the gap between coating and substrate have disappear. The alloy elements in the substrate diffuse to the coating.


2020 ◽  
Vol 63 (7) ◽  
pp. 1179-1185
Author(s):  
A. V. Gusarova ◽  
A. V. Chumaevskii ◽  
A. P. Zykova ◽  
D. A. Gur’yanov ◽  
K. N. Kalashnikov ◽  
...  

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