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 uni… Show more
“…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.…”
Reinforcements added to pure AA5083 alloy are known to lower the overall weight while improving the strength of the Metal Matrix Composite (MMC). In this work, Silicon carbide (SiC) particles are added to pure AA5083 in varying quantities (3%, 5%, 7% and 10%), and tested to failure using tensile testing. The stress-strain behavior is decomposed into the elastic and plastic behavior and is validated using Finite Element (FE) modeling. The results exhibited an increase in ultimate tensile strength (UTS) of the MMC up to 5% of SiC. The formation of intermetallic compounds due to reactions at high concentrations of SiC resulted in debonding in the MMC and thus reduction in UTS. In this work, the response of the material between yield and complete failure is characterized using VOCE nonlinear model in FE analysis. It is observed that MMC with 5% SiC has shown maximum UTS (340.34 Mpa), while MMC with 10% SiC content has resulted in the most ductility (27% plastic strain) of all the compositions. Further, MMC with 7% SiC has highest saturation stress (R 0 = 653.09 Mpa) and lowest ductility, while MMC with 10% SiC has lowest saturation stress (R 0 = 115.57 Mpa) and highest ductility.
“…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.…”
Reinforcements added to pure AA5083 alloy are known to lower the overall weight while improving the strength of the Metal Matrix Composite (MMC). In this work, Silicon carbide (SiC) particles are added to pure AA5083 in varying quantities (3%, 5%, 7% and 10%), and tested to failure using tensile testing. The stress-strain behavior is decomposed into the elastic and plastic behavior and is validated using Finite Element (FE) modeling. The results exhibited an increase in ultimate tensile strength (UTS) of the MMC up to 5% of SiC. The formation of intermetallic compounds due to reactions at high concentrations of SiC resulted in debonding in the MMC and thus reduction in UTS. In this work, the response of the material between yield and complete failure is characterized using VOCE nonlinear model in FE analysis. It is observed that MMC with 5% SiC has shown maximum UTS (340.34 Mpa), while MMC with 10% SiC content has resulted in the most ductility (27% plastic strain) of all the compositions. Further, MMC with 7% SiC has highest saturation stress (R 0 = 653.09 Mpa) and lowest ductility, while MMC with 10% SiC has lowest saturation stress (R 0 = 115.57 Mpa) and highest ductility.
“…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.…”
Friction stir welding is a solid-state environment-friendly joining process with many advantages over all fusion welding processes. Many variants in friction stir welding are used for uplifting the process to its maximum possible extent. One such variant is particle reinforcement in the weldment, which is used for improving the mechanical properties by enhancing the metallurgical aspects in the weld region. Generally, micro- and nano-sized ceramic particles are used for reinforcing, which have a much higher melting point than the materials to be joined. From the literature studies, particle size plays a prominent role in attaining better mechanical properties in reinforcing techniques. In addition, an increase in particle size decreases the corresponding mechanical property. Higher heat input conditions like higher tool rotational speed and low welding speed are preferred as they better mix reinforced particles with the matrix material in the weld zone. However, the higher input conditions in the regular friction stir welding process coarsen the grains, thereby deteriorating the mechanical properties of the joint. Increasing the number of passes and switching the direction between the passes leads to uniform distribution of particles and enhance the mechanical properties. This review article's main aim is to understand better reinforcement particles in the weld line of a friction stir welding process. Also, the author emphasizes reinforcing the combination of nano and microparticles to reduce the cost of reinforcement without compromising the mechanical properties. The work mentioned above is missing in the open literature.
“…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].…”
This paper reports on the influence of material position towards the bending strength of the 4 pass AA1050/AA6082 and AA6082/AA1050 FSPed joints. FSW approach was utilized to create dissimilar joints using two dissimilar plates. After that, the created dissimilar joints were put through a multi-pass friction stir processing. The microstructural analysis results revealed that the 4P 6082/1050 joint had substantially finer grains than the 4P 1050/6082 joint. The 4P 1050/6082 joint yielded the highest ultimate tensile strength when compared to that of the 4P 6082/1050 joint. The Vickers microhardness of 1050/6082 FSPed joints was found to be increased towards the AA6082, while 6082/1050 FSPed joints decreased towards AA1050. The bending strength analysis showed that there was no obvious trend in flexural strength.
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