Synthesis, Characterization and Mechanical Properties of AA7075 Based MMCs Reinforced with TiB2 Particles Processed Through Ultrasound Assisted In-Situ Casting Technique

Meti, Vinod Kumar V.; Shirur, Shridhar; Nampoothiri, Jayakrishnan; Ravi, K.R.; Siddhalingeshwar, I. G.

doi:10.1007/s12666-017-1216-5

Cited by 66 publications

(21 citation statements)

References 31 publications

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“…This unique combination of desirable properties of C4 makes it suitable for applications entailing higher specific modulus, strength, creep resistance, corrosion resistance and improved wear characteristics [2,3]. Placing emphasis on weight reduction, numerous researchers have fabricated aluminum-based wear-resistant composite materials by reinforcing with high-strength and stiff ceramics such as B 4 C, SiC, Si 3 N 4 , TiB 2 and TiC [4,5]. In C4 composites, the fraction of ceramic phase is greater than that of particulate reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

2018

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Co-continuous composites have potential in friction and braking applications due to their unique tribological characteristics. The present study involves Taguchi grey relational analysis-based optimization of wear parameters such as applied load, sliding speed and sliding distance, and their effect on dry sliding wear performance of AA6063/SiC co-continuous composite manufactured by gravity infiltration. A Taguchi L9 orthogonal array was designed and nine experimental runs were performed based on the designed experiments. The coefficient of wear and specific wear rate were recorded for each experiment. Based on the average responses computed from Taguchi grey relational analysis, an applied load of 60 N, sliding speed of 1 m/s and sliding distance of 1000 m were estimated to be the optimal parameters. An Analysis of Variance (ANOVA) was conducted to identify the predominant factor and established all the three factors as being significant. The sliding distance was found to have the highest significant influence of 61.05% on the wear of the C4 composite. Confirmation experiments conducted using the optimal parameters indicated an improvement of 35.25% in grey relational grade. Analysis of the worn surfaces of the confirmation experiment revealed adhesive and abrasive wear as the governing mechanisms.

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Section: Introductionmentioning

confidence: 99%

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

2018

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“…Also, TiB 2 particles refine aluminium alloy grains, which increases the dislocation density at the matrix-reinforcement interfaces, resulting in increment in microhardness of Al2024-TiB 2 composites. 26 From Figure 9 it can also be observed that the microhardness of Al2024-TiB 2 composites increases with increment in the wt.% of TiB 2 particles. Increment in the reinforcement weight percentage further reduces the grain size of aluminium, thus contributing towards hardness enhancement.…”

Section: Microhardnessmentioning

confidence: 85%

“…This increment in mechanical properties is due to the reduction in agglomeration of titanium diboride particles. 26 In-situ Al2024-TiB composite exhibited higher tensile strength, microhardness and modulus compared to the matrix material, with slight reduction in ductility. 27 With the incorporation of TiB 2 particles into Al6061, mechanical properties as well as wear resistance of the prepared composites increased.…”

Section: Introductionmentioning

confidence: 90%

Characterization of physical and mechanical properties of aluminium based composites reinforced with titanium diboride particulates

Dey

Bhowmik

Biswas

2020

Journal of Composite Materials

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Particulate reinforced aluminium matrix composites are one of the most attractive approaches for applications where high strength and hardness combinations are necessary. The aspiration of this study is to investigate the effect of titanium diboride addition on physical and mechanical properties of Al2024-TiB2 composites manufactured using stir casting route, by varying the weight percentages (wt.%) (0, 3, 6 and 9 percent) of titanium diboride particulates. During the casting process, stirring time and speed were kept constant and same for all the composites. Microstructural analysis demonstrates uniformity in TiB2 distribution and also strong matrix-reinforcement bonding which can be as a result of magnesium addition and preheating of titanium diboride particles before incorporating into the molten aluminium. With an increment in the wt.% of TiB2 particulates, hardness and tensile strength of the prepared composites improved, a significant improvement in hardness as well as tensile strength is encountered in Al2024-9% TiB2 composite, which is 44.94% and 35.49% higher than Al2024 matrix alloy, respectively. SEM analysis of the fractured surfaces revealed that the mode of fracture of unreinforced material is purely ductile but reinforced material fractured by nucleation of cracks and plastic deformation.

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“…Kumar ve ark. [28] başka bir çalışmalarında AA7075 alüminyum alaşımı sertlik değerini %5 TiB2 ilavesi ile 55Hv'de 74 Hv'ye çıkardıklarını rapor etmişlerdir.…”

Section: şEkil 1tib2/al Fgkm üRetim şEmasıunclassified

Study on Production of Functionally Graded TiB2/Al Composites

Savaş

Demirok²

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Bu çalışmada, Fonksiyonel derecelendirilmiş TiB2/Al kompozitlerin savurma döküm tekniği ile üretimi ve özelliklerinin araştırılması amaçlanmıştır. TiB2 takviye fazı, sıvı alüminyum içerisinde in-situ tekniği ile kendiliğinden oluşturulmuştur. Savurma döküm tekniğinden faydalanılarak kompozitler fonksiyonel olarak derecelendirilmiş ve son şekilleri verilmiştir. Üretilen kompozitlerin özellikleri, optik mikroskobu, SEM, XRD, yoğunluk ve sertlik analizleri kullanılarak detaylandırılmıştır. Çalışmada Al-Ti-B sistemi kullanılarak alüminyum matris içerinde in-situ tekniği ile TiB2 borür yapılarının sentezlene bildiğini görülmüştür. Aynı zamanda kompozit malzemelerin savurma kuvveti yönünden mikro yapı özelliklerinin değiştiği ve bu değişime bağılı olarak kompozitlerin yoğunluk ve sertlik değerlerinde önemli bir değişim tespit edilmiştir. Sonuçlar aynı zamanda alüminyum matrise %19 TiB2 ilavesi ile %83'lük, %12 TiB2 ilavesi ile de %50'lik sertlik artışı sağladığını göstermiştir.

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Synthesis, Characterization and Mechanical Properties of AA7075 Based MMCs Reinforced with TiB2 Particles Processed Through Ultrasound Assisted In-Situ Casting Technique

Cited by 66 publications

References 31 publications

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

Taguchi Grey Relational Analysis for Multi-Response Optimization of Wear in Co-Continuous Composite

Characterization of physical and mechanical properties of aluminium based composites reinforced with titanium diboride particulates

Study on Production of Functionally Graded TiB2/Al Composites

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