Processing–structure–property correlation in nano-SiC-reinforced friction stir welded aluminum joints

Jamalian, Hasan Mohammadzadeh; Ramezani, Hadi; Ghobadi, H.; Ansari, Mohammad; Yari, Saeed; Givi, Mohammad Kazem Besharati

doi:10.1016/j.jmapro.2015.12.008

Cited by 59 publications

(31 citation statements)

References 35 publications

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“…The addition of bare SiC particles does not effectively enhance the tensile strength. A two-pass stir could generally improve the tensile strength of the SZ, which is attributed to grain refinement after recrystallization and the improved dispersion of fine Cu particles and Cu atoms in the matrix [ 35 ]. With the improved homogeneity of reinforcement particles distribution and the improved cohesion between reinforcing particle and Al matrix, the increase in ultimate tensile strength (UTS) and yield strength (YS) can be understood.…”

Section: Resultsmentioning

confidence: 99%

Friction Stir Processing of Copper-Coated SiC Particulate-Reinforced Aluminum Matrix Composite

Huang

Aoh

2018

Materials

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In the present work, we proposed a novel friction stir processing (FSP) to produce a locally reinforced aluminum matrix composite (AMC) by stirring copper-coated SiC particulate reinforcement into Al6061 alloy matrix. Electroless-plating process was applied to deposit the copper surface coating on the SiC particulate reinforcement for the purpose of improving the interfacial adhesion between SiC particles and Al matrix. The core-shell SiC structure provides a layer for the atomic diffusion between aluminum and copper to enhance the cohesion between reinforcing particles and matrix on one hand, the dispersion of fine copper in the Al matrix during FSP provides further dispersive strengthening and solid solution strengthening, on the other hand. Hardness distribution and tensile results across the stir zone validated the novel concept in improving the mechanical properties of AMC that was realized via FSP. Optical microscope (OM) and Transmission Electron Microscopy (TEM) investigations were conducted to investigate the microstructure. Energy dispersive spectrometer (EDS), electron probe micro-analyzer (EPMA), and X-ray diffraction (XRD) were explored to analyze the atomic inter-diffusion and the formation of intermetallic at interface. The possible strengthening mechanisms of the AMC containing Cu-coated SiC particulate reinforcement were interpreted. The concept of strengthening developed in this work may open a new way of fabricating of particulate reinforced metal matrix composites.

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Section: Resultsmentioning

confidence: 99%

Friction Stir Processing of Copper-Coated SiC Particulate-Reinforced Aluminum Matrix Composite

Huang

Aoh

2018

Materials

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“…74 Moreover, it is possible that either increasing TRS or decreasing WS in combination with the increased pass number results in increased tensile properties of reinforced specimens. 62 In FSW, IMCs are more prone to form when the heat generation during the process increases. However, the deposition of nanoparticles limits grain growth and formation of IMCs, which enhances mechanical properties.…”

Section: Tensile Propertiesmentioning

confidence: 99%

“…34 Moreover, the particles interact with matrix material and increase the nucleation sites by breaking the initial grains that restrain the grain boundary movement. 62 Also, an increase in the weight percent of reinforcing particles reduced the grain size due to more particles available for interacting with the matrix, which hinders grain growth through the pinning effect concept. However, a further increase in weight percent has reduced the grain size by inversely affecting the mechanical properties.…”

Section: Microstructural Characterizationmentioning

confidence: 99%

“…So, the homogeneous distribution of particles is one of the crucial considerations in the reinforcement technique. 32,62 In addition, shifting either direction of rotation or the direction of the traverse movement is considered to be a change in direction between passes. It is worth noting that the changing direction between the passes leads to the more homogenized distribution of reinforcing particles which can be related to its tendency to flow toward the AS in the FSW process.…”

Section: Operating Parametersmentioning

confidence: 99%

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

ShivaKumar

Rajamurugan

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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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.

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“…The phenomena of dynamic recrystallization is greatly affected by tool rotation speed, tool traverse rate, vertical pressure exerted on workpiece by tool shoulder, tool geometry, pin profile cooling method etc [7]. Several research work have been reported to prepare surface composites such as Al/SiC [7] , Al-Mg-Si/TiB2, Al/Al2C , [8], Al-Mg/TiO2 [9] and Al/B4C [10] by FSP. Also, FSP can also be utilized to fabricate intermetallic composites such as Al-Ni and Al-Fe in Al-alloy matrix using metal particles as reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Effect of Deposition Techniques of Reinforcement During Fabrication of Al-Based Surface Hybrid Matrix Metal Matrix Composite

Sahu¹

2021

TURCOMAT

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Several deposition methods have been proposed for pre-deposition of reinforcement particle for preparation of surface metal matrix composite by Friction Stir Process. The method, which will effectively and homogeneously spread the reinforcement within processed zone, will be considered as best possible method.Homogeneous volumetric metal matrix composites can be fabricated by conventional casting and modified stir casting methods. Friction stir process (FSP) can be used as one of the best technique to fabricate surface modified metal matrix composites. In this research article, silicon carbide and graphite powder are used as reinforced materials and AA6061 is used as parent metal matrix material. FSP which is a versatile surface composite preparation technique is applied for fabrication of surface composite. Herein, single channel, multi-channel and perforated holes methods have been utilized for reinforcement deposition. As per the results, perforated blind holes method is reported as best method of pre deposition of powders. Finally, array of holes for pre-deposition of reinforcement powder improves approx 25% in ultimate tensile strength , 40% in micro-hardness and appreciable grain refinement are observed in metal matrix composite processed by FSP as compared to as received alloy.

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Processing–structure–property correlation in nano-SiC-reinforced friction stir welded aluminum joints

Cited by 59 publications

References 35 publications

Friction Stir Processing of Copper-Coated SiC Particulate-Reinforced Aluminum Matrix Composite

Friction Stir Processing of Copper-Coated SiC Particulate-Reinforced Aluminum Matrix Composite

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

Effect of Deposition Techniques of Reinforcement During Fabrication of Al-Based Surface Hybrid Matrix Metal Matrix Composite

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