Characterization of NbC-Reinforced AA7075 Alloy Composites Produced Using Friction Stir Processing

Kumar, T. Satish; Priyadharshini, G. Suganya; Shalini, S.; Kumar, K. Krishna; Subramanian, Ramanathan

doi:10.1007/s12666-019-01566-7

Cited by 23 publications

(8 citation statements)

References 8 publications

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“…e obtained results reveal that the selected reinforcement materials such as TaC, Si 3 N 4 , and Ti have an infinitesimal influence on the overall density of the developed multihybrid composite materials. Due to the hard nature of the selected ceramic reinforcements, the overall density of the developed composite materials was found to be higher [24]. Since the density of the Si 3 N 4 is comparatively higher with 3.44 g/cm 3 when compared to other reinforcements, it has a greater influence on the density of the hybrid composites.…”

Section: Density and Porosity Analysis Of Aa7075/tac/ti/si 3 N 4 Hybr...mentioning

confidence: 96%

Effect of TaC/Ti/Si3N4 Hard Ceramics on Mechanical and Microstructural Behaviour of AA7075 Processed through Stir Casting Process

Kumar

Smart

Manova

et al. 2022

Advances in Materials Science and Engineering

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A liquid metallurgical stir casting route was utilized for developing aluminium alloy (7075) matrix composites blended with fluctuating wt% of silicon nitride (Si3N4), tantalum carbide (TaC), and titanium (Ti) for sake of generating a profitable composite with enhanced properties. The physical, microstructural, and mechanical characteristics such as density, high temperature tensile, fatigue, and time-dependent creep experiments were conducted and evaluated. SEM microstructural examinations were performed on the composite samples and proved that there was a good interfacial bonding and uniform dissemination among the reinforcement particulates in the matrix. Physical characteristics were analysed and the outcomes showed that AA7075 blended with 1 wt% TaC, 8 wt% Si3N4, and 0.5 wt% Ti proved higher experimental and theoretical densities of 3.2464 g/cm3 and 3.3038 g/cm3, respectively, with maximum porosity of 1.7758%. At 30°C, the tensile properties of the developed MMCs showed improved ultimate tensile strength (UTS) of 137.64 N/mm2. Beyond 100°C, AA7075 reinforced with 0.75 wt% TaC, 6 wt% Si3N4, and 1 wt% Ti proved to have a higher strength of 232.17 N/mm2. Fatigue properties of the developed MMCs discovered were found to be reformed when proportionate to the base alloy by operating at 14 × 103 cycles at the stress of 42.72 MPa. Time-dependent creep analysis of the developed MMCs found to be advanced due to the addition of tough ceramic particulates.

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Section: Density and Porosity Analysis Of Aa7075/tac/ti/si 3 N 4 Hybr...mentioning

confidence: 96%

Effect of TaC/Ti/Si3N4 Hard Ceramics on Mechanical and Microstructural Behaviour of AA7075 Processed through Stir Casting Process

Kumar

Smart

Manova

et al. 2022

Advances in Materials Science and Engineering

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“…Severe plastic deformation and dynamic recrystallization during FSP result in a fine equiaxed grain microstructure in the stir zone, in which reinforcing particles are located both inside the grains and at the grain boundaries [61,63,71,76]. When introducing reinforcement particles into the matrix by FSP, no interfacial reactions were observed; there is a distinct boundary between the matrix and the introduced particles, e.g., as shown in Figure 9 for AA6063 alloy FSPed with the addition of vanadium particles [63].…”

Section: Friction Stir Processing Of Particle-reinforced Structural A...mentioning

confidence: 99%

“…• materials with a subsurface gradient structure obtained through the formation of equiaxed nanograins and structural homogenization ; • materials with a compositional subsurface gradient structure formed by modifying and hardening the material surface with various reinforcements [32,[58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77]; • in situ and hybrid composites [71,[78][79][80][81][82][83][84][85][86][87][88][89][90][91].…”

Section: Introductionmentioning

confidence: 99%

A Review of Friction Stir Processing of Structural Metallic Materials: Process, Properties, and Methods

Zykova

Tarasov

Chumaevskiy

et al. 2020

Metals

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Friction stir processing (FSP) has attracted much attention in the last decade and contributed significantly to the creation of functionally graded materials with both gradient structure and gradient mechanical properties. Subsurface gradient structures are formed in FSPed metallic materials due to ultrafine grained structure formation, surface modification and hardening with various reinforcing particles, fabrication of hybrid and in situ surfaces. This paper is a review of the latest achievements in FSP of non-ferrous metal alloys (aluminum, copper, titanium, and magnesium alloys). It describes the general formation mechanisms of subsurface gradient structures in metal alloys processed by FSP under various conditions. A summary of experimental data is given for the microstructure, mechanical, and tribological properties of non-ferrous metal alloys.

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“…The formation of in situ magnesium aluminate in aluminium composites have been explored extensively with varied sources of oxygen to form the magnesium aluminate particles in aluminium‐magnesium alloy [16, 17]. Studies on addition of oxide sources include aluminium oxide, silicon dioxide, titanium dioxide, magnesium oxide and boric acid for the generation of magnesium aluminate particles [18–25]. Rarely, certain studies have approached the formation of magnesium aluminate using nickel oxide and yttrium oxide as reinforcement [26, 27].…”

Section: Introductionmentioning

confidence: 99%

“…The mechanisms for improved mechanical characteristics of the composites have been identified as grain boundary strengthening, Orowan dispersion strengthening, load bearing, and coefficient of thermal expansion mismatch strengthening [37]. Wear studies carried out in the same composite showed that the inclusion of magnesium aluminate considerably reduce the wear rate even at higher loads [22]. A similar alloy composite specimen made of aluminium‐4magnesium/1.5 wt % boric acid has been tested for its corrosion performance and found to attain higher corrosion resistance in different medium due to considerable grain refinement, created by magnesium aluminate particles.…”

Section: Introductionmentioning

confidence: 99%

Fatigue performance of the aluminium‐magnesium/magnesium aluminate in‐situ composites synthesized through manganese dioxide and copper oxide reinforcement

Chockalingam

Raman²,

Olubambi

2023

Materialwissenschaft Werkst

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Aluminium‐2magnesium alloy castings find its application in engineering sectors where fatigue property is a key requirement. Few researches have been carried out in the past to improve its fatigue property by micro, nano reinforcements. However, the requirement of intended application has not yet attained and hence this current research study has been taken up to provide a solution. This research work focuses through a novel approach for synthesizing in‐situ magnesium aluminate particles in aluminium‐2magnesium alloy by the addition of manganese dioxide and copper oxide precursor addition (1 wt.%, 1.5 wt.% and 2 wt.%) during the casting process. Microstructure of fabricated composites were examined through field emission scanning electron microscopy to characterize the morphology and distribution of magnesium aluminate particles. The fabricated aluminium‐2magnesium/magnesium aluminate in‐situ composite specimens were subjected to low cycle fatigue testing at two different strain amplitudes of 0.3 % and 0.4 % and a frequency of 0.3 Hz. Among all composite specimens, specimens reinforced with 2 wt.% manganese dioxide and 2 wt.% copper oxide outperformed when tested in strain amplitudes of 0.3 % and 0.4 % respectively. Fractography studies were performed on failed composite specimens to study the modes of failure that resulted after fatigue testing.

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Characterization of NbC-Reinforced AA7075 Alloy Composites Produced Using Friction Stir Processing

Cited by 23 publications

References 8 publications

Effect of TaC/Ti/Si3N4 Hard Ceramics on Mechanical and Microstructural Behaviour of AA7075 Processed through Stir Casting Process

Effect of TaC/Ti/Si3N4 Hard Ceramics on Mechanical and Microstructural Behaviour of AA7075 Processed through Stir Casting Process

A Review of Friction Stir Processing of Structural Metallic Materials: Process, Properties, and Methods

Fatigue performance of the aluminium‐magnesium/magnesium aluminate in‐situ composites synthesized through manganese dioxide and copper oxide reinforcement

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