Influence of Al2O3 particles on the microstructure and mechanical properties of copper surface composites fabricated by friction stir processing

Raju, L. Suvarna; Kumar, Adepu

doi:10.1016/j.dt.2014.09.001

Cited by 50 publications

(14 citation statements)

References 17 publications

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“…The highest value of Hardness of 129.137 HV which 24.17 % higher than the base metal and found increased with increase of speed and reinforcement. The similar results were reported by researchers A. Thangarasu et al [32] and L. Suvarna Raju et al [51]. This may be due to presence of reinforced particles and micro structural changes like DRX induced by FSP and orowan strengthening and the movement of dislocations due to presence of reinforcement are responsible for improvement of hardness.…”

Section: Mechanical Propertiessupporting

confidence: 79%

Process Parameters Optimization for Producing AA6061/TiB₂ Composites by Friction Stir Processing

Santha¹,

Ramanaiah

2017

Strojnícky Casopis – Journal of Mechanical Engineering

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Friction stir processing (FSP) is solid state novel technique developed to refine microstructure and to improve the mechanical properties and be used to fabricate the aluminium alloy matrix composites. An attempt is made to fabricate AA6061/TiB2 aluminium alloy composite (AMCs) and the influence of process parameters like rotational speed, transverse feed, axial load and percentage reinforcement on microstructure and mechanical properties were studied. The microstructural observations are carried out and revealed that the reinforcement particles (TiB2) were uniformly dispersed in the nugget zone. The Tensile strength and Hardness of composites were evaluated. It was observed that tensile strength, and hardness were increased with increased the rotational speed and percentage reinforcement of particles. The process parameters were optimized using Taguchi analysis (Single Variable) and Grey analysis (Multi Variable). The most influential parameter was rotational speed in single variable method and multi variable optimization method. The ANOVA also done to know the percentage contribution of each parameter

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Section: Mechanical Propertiessupporting

confidence: 79%

Process Parameters Optimization for Producing AA6061/TiB₂ Composites by Friction Stir Processing

Santha¹,

Ramanaiah

2017

Strojnícky Casopis – Journal of Mechanical Engineering

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“…average spacing between the particles was very good. It is revealed that, as the rotational speed increases, the microhardness also increases that is due to the increase in heat input that causes easier and more intense stirring action of the rotating pin resulting in better dispersion of reinforcement particles thus increasing the microhardness [20][21][22]. Low annealing effect of heat input increases the microhardness behaviour under high rotational speed.…”

Section: Effect Of Nano-tio 2 Particles On Wear and Corrosion Behaviomentioning

confidence: 92%

Effect of Nano-TiO$_2$ Particles on Wear and Corrosion Behaviour of AA6063 Surface Composite Fabricated by Friction Stir Processing

Muthukrishnan¹,

Balaji²,

Raghav³

2018

Metallofiz. Noveishie Tekhnol.

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In this investigation, the effect of nano-TiO 2 particles on wear and corrosion behaviour of AA6063 surface nanocomposites produced via friction stir processing (FSP) was studied. Microstructure analysis of fabricated surface nanocomposites was done with scanning electron microscope and found that TiO 2 nanoparticles are uniformly dispersed in the stir zone. The surface nanocomposites were characterized by hardness, wear and corrosion tests. The results revealed that the microhardness increases due to the presence of hard TiO 2 nanoparticles than as AA6063 alloy. The FSPed surface nanocomposites exhibited low frictional coefficient, excellent wear resistance and adequate corrosion resistance at 40 mm/min and as compared to that of the as cast alloy.Key words: AA6063 alloy, TiO 2 nanoparticles, friction stir processing, surface nanocomposites, microstructure, microhardness, wear behaviour, corrosion behaviour.Досліджено вплив наночастинок TiO 2 на характер зношування та корозії поверхневих нанокомпозитів стопу AA6063, одержаних за допомогою об-роблення тертям з перемішуванням. Проведено аналізу одержаних пове-рхневих нанокомпозитів методою сканувальної електронної мікроскопії та встановлено, що наночастинки TiO 2 рівномірно розподілені в зоні пе-ремішування. Для характеризації поверхневих нанокомпозитів було ви-користано випробування на твердість, зносостійкість і корозійну стій-кість. Показано, що мікротвердість підвищується у порівнянні зі стопом AA6063 завдяки наявності наночастинок TiO 2 . Оброблені методою тертя з Ключові слова: стоп AA6063, наночастинки TiO 2 , оброблення фрикцій-ним перемішуванням, поверхневі нанокомпозити, мікроструктура, мік-ротвердість, характеристики зношування, корозійні властивості.Исследовано влияние наночастиц TiO 2 на характер износа и коррозии по-верхностных нанокомпозитов сплава AA6063, полученных с помощью обработки трением с перемешиванием. Проведён анализ поверхностных нанокомпозитов методом сканирующей электронной микроскопии и по-казано, что наночастицы TiO 2 равномерно распределены в зоне переме-шивания. Для характеризации поверхностных нанокомпозитов были ис-пользованы испытания на твёрдость, износостойкость и коррозионную стойкость. Показано, что микротвёрдость повышается по сравнению со сплавом AA6063 благодаря наличию наночастиц TiO 2 . Обработанные ме-тодом трения с перемешиванием поверхностные нанокомпозиты облада-ют низким коэффициентом трения, отменной износостойкостью и адек-ватной коррозионной стойкостью при 40 мм/мин по сравнению со спла-вом в литом состоянии.Ключевые слова: сплав AA6063, наночастицы TiO 2 , обработка фрикци-онным перемешиванием, поверхностные нанокомпозиты, микрострукту-ра, микротвёрдость, характеристики износа, коррозионные свойства.

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“…The four samples were tested to see if they met the ASTM E8M-04 standard; the 40-ton capacity of Universal Testing Machine (UTM) was used, Figure 3 was illustrates to employed for conducting tensile strength testing on the samples. The strain rate was measured with the aid of an extensometer [ 16 , 17 , 18 ]. The four samples were tested at 1100 rpm.…”

Section: Methodsmentioning

confidence: 99%

Experimental Investigation of the Friction Stir Weldability of AA8006 with Zirconia Particle Reinforcement and Optimized Process Parameters

et al. 2021

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A lightweight, highly corrosive resistant, and high-strength wrought alloy in the alumi-num family is the Aluminium 8006 alloy. The AA8006 alloy can be formed, welded, and adhesively bonded. However, the recommended welding methods such as laser, TIG (Tungsten Inert Gas welding), and ultrasonic are more costly. This investigation aims to reduce the cost of welding with-out compromising joint quality by means of friction stir welding. The aluminum alloy-friendly re-inforcement agent zirconia is utilized as particles during the weld to improve the performance of the newly identified material AA8006 alloy in friction stir welding (FSW). The objectives of this research are to identify the level of process parameters for the friction stir welding of AA8006 to reduce the variability by the trial-and-error experimental method, thereby reducing the number of samples needing to be characterized to optimize the process parameters. To enhance the quality of the weld, the friction stir processing concept will be adapted with zirconia reinforcement during welding. The friction stir-processed samples were investigated regarding their mechanical proper-ties such as tensile strength and Vickers microhardness. The welded samples were included in the corrosion testing to ensure that no foreign corrosive elements were included during the welding. The quality of the weld was investigated in terms of its surface morphology, including aspects such as the dispersion of reinforced particles on the welded area, the incorporation of foreign elements during the weld, micro defects or damage, and other notable changes through scanning electron microscopy analysis. The process of 3D profilometry was employed to perform optical microscopy investigation on the specimens inspected to ensure their surface quality and finish. Based on the outcomes, the optimal process parameters are suggested. Future directions for further investigation are highlighted.

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Influence of Al2O3 particles on the microstructure and mechanical properties of copper surface composites fabricated by friction stir processing

Cited by 50 publications

References 17 publications

Process Parameters Optimization for Producing AA6061/TiB₂ Composites by Friction Stir Processing

Process Parameters Optimization for Producing AA6061/TiB₂ Composites by Friction Stir Processing

Effect of Nano-TiO$_2$ Particles on Wear and Corrosion Behaviour of AA6063 Surface Composite Fabricated by Friction Stir Processing

Experimental Investigation of the Friction Stir Weldability of AA8006 with Zirconia Particle Reinforcement and Optimized Process Parameters

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Influence of Al2O3 particles on the microstructure and mechanical properties of copper surface composites fabricated by friction stir processing

Cited by 50 publications

References 17 publications

Process Parameters Optimization for Producing AA6061/TiB2 Composites by Friction Stir Processing

Process Parameters Optimization for Producing AA6061/TiB2 Composites by Friction Stir Processing

Effect of Nano-TiO$_2$ Particles on Wear and Corrosion Behaviour of AA6063 Surface Composite Fabricated by Friction Stir Processing

Experimental Investigation of the Friction Stir Weldability of AA8006 with Zirconia Particle Reinforcement and Optimized Process Parameters

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Process Parameters Optimization for Producing AA6061/TiB₂ Composites by Friction Stir Processing

Process Parameters Optimization for Producing AA6061/TiB₂ Composites by Friction Stir Processing