Mechanical and Microstructural Characterization of Hybrid Cu-SiC-Zn Composites Fabricated Via Friction Stir Processing

Abstract

In this work, an attempt has been made to fabricate hybrid Cu-SiC-Zn composites by friction stir processing technique. Through this investigation the different number of passes was applied to assess the effect of pass adding on the mechanical, microstructural and dislocation density behavior of the specimens. Formation of the intermetallic phases between the copper matrix and Zn particles was discovered through the processed specimens. According to the obtained results, the higher passes led to obtain more uniform dispersion of the SiC particles and intermetallic phases. This higher level of particles and intermetallic phases' distribution causes remarkable reduction of grain sizes through the composites. Dislocation density for the processed specimens was determined by using the hardness measurement method. The calculated values for the dislocation densities showed that presence of SiC particles and intermetallic phases could rise up the dislocation values. Measured microhardness values for the composites exhibit that they enhanced rather than base metal and these results were confirmed by dislocation densities values of the specimens.

FE simulation of uniaxial tensile behavior of SiC reinforced AA5083 alloy

“…NANJAN and MURALI [26] has observed the enhancement of mechanical properties of the stir casted metal matrix composites. BARMOUZ et al [27] has discovered the formation of the intermetallic phases between the base metal and reinforced particles in the casted specimens. CAO et al [28] has discovered that the behavior of the reinforced particles changes with the processing parameters.…”

Understanding the effect of particle reinforcement on friction stir weldment: A review

“…28 However, the defect can be minimized by increasing passes which may distribute the particles more uniformly. 36 The particle addition in the matrix hinders grain growth, leading to the grain size reduction resulting from the pinning effect. 37 In addition, the size of reinforcing particles plays a vital role in the production of composites.…”

The Influence of Material Position towards the Bending Strength of the 4 Pass AA1050/AA6082 and AA6082/AA1050 FSPed Joints

“…Friction Stir Processing (FSP) is an advanced process for altering the microstructure of a processed alloy [1], which leads to the structure rearrangement and grain size alteration, which has already been developed through the use of the Friction Stir Welding (FSW) technique, that was introduced by TWI Ltd in the United Kingdom in 1991. Material flow affecting parameters such as material positioning, process parameters, tool design, and process improvements are essential for the overall performance of friction-based manufacturing processes like friction stir welding, friction stir lap welding and friction stir spot welding [2,3,4,5,6,7,8,9,10,11,12].…”