Mechanical Properties, Corrosion Resistance, and Microstructural Changes during Friction Stir Processing of 5083 Aluminum Rolled Plates

Behnagh, Reza Abdi; Givi, Mohammad Kazem Besharati; Akbari, Mostafa

doi:10.1080/10426914.2011.593243

Cited by 123 publications

(61 citation statements)

References 15 publications

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“…The maximum nano-hardness (0.38GPa) is obtained for Al-SiC composite, whereas Al-graphite mono composite and hybrid composite show nano-hardness values of 0.30 GPa and 0.35 GPa, respectively. The increase in nano-hardness is attributed to the grain refinement due to dynamic recrystallization and the existence of compressive strains in the stir region [52]. Another possible reason for the increase in hardness is the generation of geometrically necessary dislocations (GND).…”

Section: Nanomechanical Behaviourmentioning

confidence: 99%

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

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Aluminium-based hybrid metal grid composites (MMC) are extensively utilized in automobile applications (engine cylinders, pistons, etc.) as they exhibit a fantastic blend of properties. Here, a detailed study of nano-mechanical, electrochemical and Raman spectroscopic behavior of friction stir processed Al6061-SiC-graphite hybrid surface composite is presented. The effect of various tool rotational speeds was evaluated along with the monitoring of variation in axial force. Microstructural changes with various tool rotational speeds are studied by using a scanning electron microscope. Raman spectroscopy and X-Ray diffraction studies are used for the spectroscopic characterization of the fabricated hybrid and mono surface composites. Residual stresses and various crystal structure disorders of reinforcement result in the significant change in intensity and a considerable shift in Raman peak positions. The nano-mechanical behavior of the fabricated composite with various reinforcements and tool rotational speeds are analyzed by using nano-indentation. The nano-mechanical behavior of hybrid composite fabricated with an optimum set of processing parameters is superior to mono composites fabricated with the same processing parameters. Also, the electrochemical behavior of the fabricated composites is studied by linear potentiodynamic polarization test. The Al6061-SiC-graphite hybrid surface composite reveals excellent nano-mechanical and electrochemical behavior when fabricated with an optimum set of processing parameters. The tool rotational speed has a pronounced effect on the dispersion of agglomerates and grain refinement of the matrix material. The processing parameters extensively affect the Raman spectroscopic behavior of the hybrid composite. The hybrid surface composite shows better corrosion resistance than the mono composites when fabricated with an optimum set of processing parameters. Reduced intergranular as well as interfacial corrosion pits in hybrid composites increased its resistance to corrosion.

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Section: Nanomechanical Behaviourmentioning

confidence: 99%

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

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“…Aluminium shows a bit of fluctuation in the value which represents a modification on the surface occurring during the sliding such behaviour was noticed when the materials transfer from surface to another and detachments may occurs leading to the fluctuation in the frication coefficient. This has been reported by [11,12] when different materials have been tested under dry adhesive wear loadings. With regards of the influence of the applied load on the frictional behaviour of the materials, increase the applied load reduces the friction coefficient especially for the brass and the aluminium materials.…”

Section: Frictional Behaviourmentioning

confidence: 82%

Wear and Frictional Behaviour of Metals

Alotaibi

Yousif

Yusaf

2014

AMR

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Abstract. In the current study, wear and frictional performances of different metals are investigated under different operating parameters against stainless steel counterface under dry contact conditions. The experiments performed using block on ring machine. Microscopy was used to examine the damage features on the worn surface and categorize the wear mechanism. Thermal imager was used to understand the thermal loading in the interface during the rubbing process. The results revealed that the operating parameters influence the wear and frictional behaviour of all the metals. Brass metal exhibited better wear and frictional behaviour compared to others. Three different wear mechanisms were observed, i.e. two body abrasion (Brass), three body abrasion (Aluminium) and adhesive (Mild Steel).

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“…Zbog toga su ove legure osetljive na interktistalnu, naponsku i piting koroziju, budući da je faza elektrohemijski aktivnija od Al-osnove [11][12][13][14][15]. Ispitivanje korozione otpornosti zavarenih spojeva aluminijumskih legurado 5% Mg, uključujući i noviji postupak trenjem alatom (FSW-friction stir welding) je predmet brojnih istraživanja [10,[16][17][18][19][20], ali nedostaju rezultati korozione otpornosti legura sa većim sadržajem Mg. Zbog toga je cilj ovog rada bio da se ispita koroziona ponašanje zavarenog spoja AlMg6Mn legure. …”

Section: Uvodunclassified