Mechanical properties and morphology of aluminium metal matrix nanocomposites-stir cast products

Alam, Tanwir; Ansari, Akhter Husain; Arif, Sajjad

doi:10.1080/2374068x.2017.1350543

Cited by 41 publications

(22 citation statements)

References 21 publications

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“…Among those methods, stir casting process is the most uncomplicated method concerned in the formation of particulate-reinforced AHMMCs. However, it has greater dissemination of reinforced particles in the matrix medium and also it has admirable moistening properties [6].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Senthilkumar¹,

Muralikannan²

2019

J Braz. Soc. Mech. Sci. Eng.

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A generous development of electrical discharge machining method has been stimulated in the province of metal matrix composites materials. In this extant work, the optimal condition for various output responses specifically circularity, cylindricity, perpendicularity and radial over cut are exposed by employing grey relational analysis procedure by optimizing the input process parameters alike pulse on time (T on), peak current (I) and gap voltage (V). The Hybrid Metal Matrix Composite material is evolved by handling the stir casting approach and then machined by exploring the input parameters using L 27 orthogonal array. From the consequences of grey relational grade, a response table was discovered to elect the optimal conditions of the individual parameter. The most contributing input parameter is current with 69.08%, which is determined from the ANOVA table. Finally, the optimal conditions which were acquired from the response table are peak current of 12 A, pulse on time of 50 µs and gap voltage of 30 V and also verified through an authentication test which illustrated that optimal process parameters are competently improved by 0.1452 when compared to the predicted parameter. The machined surface is analysed using a scanning electron microscope. The results palpated that the peak current increases the number of microvoids and size of the crater was increased and the poor surface finish was achieved.

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Section: Introductionmentioning

confidence: 99%

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Senthilkumar¹,

Muralikannan²

2019

J Braz. Soc. Mech. Sci. Eng.

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“…Tanwir alam et al 15 produced nanocomposites using a stir-casting process by reinforcing silicon carbide nanoparticles (mechanically milled) into an aluminium alloy metal matrix. The nanosize of the particles ensured improved wettability and also better embedding of the reinforcement particles into the alloy matrix.…”

Section: Attemptedmentioning

confidence: 99%

“…Furthermore, it was recommended that this composite with optimum w/% could be utilised for applications in the heavy-vehicle sector. Valve-seat inserts were produced from AA7075 and AA7075+SiC p composites containing (10,15,20 and 25) % reinforcements for a comparative study by Bhusan et al 10 It was observed in the course of the study that when the reinforcements exceed 25 % SiC p deficiencies like non-uniformity in the distribution of particles, a poor surface finish and high tool wear arise. These properties became enhanced in the range 10-15 w/% inclusion of SiC p.…”

Section: Introductionmentioning

confidence: 99%

Study of the microstructures and mechanical properties of aluminium hybrid composites with SiC and Al2O3

Pugalenthi¹,

Jayaraman²,

Subburam³

2019

Mater. Tehnol.

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Aluminium metal-matrix composites are widely produced with different ceramic compounds as reinforcements to enhance their properties and to suit various structural applications. The present work involves the fabrication of Al7075 composites with silicon carbide (SiC) and aluminum oxide (Al2O3) as reinforcements through stir casting. Four specimens were produced with different compositions comprising SiC (3, 5, 7 and 9 w/%) and Al2O3 2 w/% in all the combinations. Mechanical properties like ultimate tensile strength (UTS), yield strength (YS), percentage of elongation (% of elongation) and hardness (VHN) were examined, along with fractography studies. The microstructural characterization of the composites was also studied through micrographs obtained from the scanning electron microscope (SEM). The test results revealed that the increase in the w/% fractions of the reinforcement materials caused an increase in the tensile strength, yield strength and hardness of the aluminium composite, except for the % of elongation, which is reduced with the addition of ceramic particles.Kompoziti s kovinsko osnovo iz aluminija se pogosto izdelujejo z razli~nimi kerami~nimi spojinami kot oja~itveno fazo, in s tem postanejo uporabni za izdelavo razli~nih strukturnih aplikacij. V pri~ujo~i raziskavi so avtorji izdelali kompozite na osnovi Al zlitine 7075 z dodatkom delcev silicijevega karbida (SiC) in aluminijevega oksida (Al2O3) kot oja~itveno fazo med preme{avanjem taline. Izdelali so {tiri vzorce z razli~no vsebnostjo SiC (3, 5, 7 in 9 w/%) in v vseh primerih {e z dodatkom 2 w/% Al2O3. Dolo~ili so mehanske lastnosti izdelanih kompozitov -natezno trdnost pri pretrgu (UTS), mejo plasti~nosti (YS), raztezek (%) in trdoto (VHN). Nato so izvedli {e analize prelomov (fraktografijo) nateznih preizku{ancev s pomo~jo vrsti~nega elektronskega mikroskopa (SEM). Rezultati preiskav so pokazali, da pove~anje dodatka oja~itvene faze v obliki kerami~nih delcev povzro~i zvi{anje natezne trdnosti, meje plasti~nosti in trdote, zmanj{a pa se raztezek. Klju~ne besede: metoda litja s preme{avanjem, hibridni kompoziti, mehanske lastnosti in mikrostruktura

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“…Hence, an adequate analysis of the surface hardness behavior of aluminum matrix composites (AMCs) is therefore of pivotal importance. Significant investigations have therefore been focused on the production of AMCs due to their low density, improved strength to weight ratio, and satisfactory hardness and wear resistance [ 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. These key features of Al/Al alloy composites have led to a great acceptance of AMCs in automobiles, aircraft, offshore structures, and many other applications.…”

Section: Introductionmentioning

confidence: 99%

Modeling, Optimization and Performance Evaluation of TiC/Graphite Reinforced Al 7075 Hybrid Composites Using Response Surface Methodology

Alam

Yusuf

et al. 2021

Materials

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The tenacious thirst for fuel-saving and desirable physical and mechanical properties of the materials have compelled researchers to focus on a new generation of aluminum hybrid composites for automotive and aircraft applications. This work investigates the microhardness behavior and microstructural characterization of aluminum alloy (Al 7075)-titanium carbide (TiC)-graphite (Gr) hybrid composites. The hybrid composites were prepared via the powder metallurgy technique with the amounts of TiC (0, 3, 5, and 7 wt.%), reinforced to Al 7075 + 1 wt.% Gr. The microstructural characteristics were investigated by optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS) elemental mapping. A Box Behnken design (BBD) response surface methodology (RSM) approach was utilized for modeling and optimization of density and microhardness independent parameters and to develop an empirical model of density and microhardness in terms of process variables. Effects of independent parameters on the responses have been evaluated by analysis of variance (ANOVA). The density and microhardness of the Al 7075-TiC-Gr hybrid composites are found to be increased by increasing the weight percentage of TiC particles. The optimal conditions for obtaining the highest density and microhardness are estimated to be 6.79 wt.% TiC at temperature 626.13 °C and compaction pressure of 300 Mpa.

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Mechanical properties and morphology of aluminium metal matrix nanocomposites-stir cast products

Cited by 41 publications

References 21 publications

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Study of the microstructures and mechanical properties of aluminium hybrid composites with SiC and Al2O3

Modeling, Optimization and Performance Evaluation of TiC/Graphite Reinforced Al 7075 Hybrid Composites Using Response Surface Methodology

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