INVESTIGATING AND MODELING THE EFFECT OF PROCESSING PARAMETERS ON MECHANICAL PROPERTIES OF FRICTIONS STIR WELDED A356-SiC COMPOSITES

Friction stir welding process (FSW), as a solid-state joining process, is applied in order to get desirable mechanical and technological performances of the joints. In addition, FSW could be used to join high-strength aerospace aluminum based composites and other metallic alloys and composites that are hard to weld by other common fusion welding procedures. In this research the effect of transverse velocity (V), rotational rate (W) and also axial force on mechanical properties of friction stir welded A356-SiC composites is investigated through considering yield strength and microhardness of welded components and also by a model obtained by response surface method (RSM). Finally It can be concluded from the results that the higher the transverse speed and the lower the rotational rate, the more the strength of welded components is obtained. Also, the axial force has an optimum value in gaining the better mechanical properties.

کلیدواژه ها:

Friction stir welding process ، transverse velocity ، rotational rate ، yield strength ، response surface method