Production and mechanical properties of Al2O3 particle-reinforced 2024 aluminium alloy composites

Kök, Metin

doi:10.1016/j.jmatprotec.2004.07.068

Cited by 671 publications

(301 citation statements)

References 25 publications

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“…The authors have noted that the volume loss with increase in sliding distance in composite material increases at slower rate as compared to pure aluminum matrix alloy. Kok [39] fabricated AA 2024 composite reinforced with alumina (Al 2 O 3 ) particles by vortex method and studied the wear properties. He found that wear properties were very much affected by the sliding distance, wt% of Al 2 O 3 , size of ceramic particles and abrasive grit size.…”

Section: B Tribological Examinationmentioning

confidence: 99%

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Kaushik¹,

Singhaal²

2017

IJET

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Abstract--The drift of research work from monolithic aluminum alloy to composite materials like Metal Matrix Composites (MMC's) is due to the world-wide proviso for economical, high working performance and superior quality materials. Metal matrix composites especially aluminum matrix composites (AMC's) due to their excellent strength with respect to their weight, superior wear resistance, economical and high corrosion resistance are extensively produced and utilized in several applications like, architectural components, structural applications, aerospace, automobile industry, ship building and many sports items and electrical and electronic components. The reinforcements like SiC, B 4 C, Al 2 O 3 , TiB 2 , Red mud, Graphite, Fly ash, and Coconut ash etc. can be easily incorporated as reinforcement agents in the molten melt by employing the economical and widely used stir casting technique, which improves strength, stiffness, fatigue, hardness, wear and creep properties of the AMCs. This paper gives an overview of mechanical, microstructural and wear performances of aluminum centered metal matrix composites produced by stir casting process reinforced with single and multiple types of reinforcements. The problems like reinforcement-metal matrix bonding, distribution of particles, wettability of reinforcing particles and agglomeration phenomenon are discussed in this paper. The effect of various reinforcement particles on aluminum matrix composites on mechanical properties like uts, ys, stiffness, hardness, fatigue, % E, wear and on resulting microstructure is discussed. The Modified and dual step stir casting technique for the fabrication of AMCs is also discussed in this paper. Keywords: Aluminum matrix composite (AMC), stir casting, reinforcement, mechanical properties, wear behavior I. INTRODUCTIONMetal based matrix composites reinforced with ceramic agents have a wide range of applications in aerospace, automobile, structural components and defense sector. Monolithic aluminum alloys have limitations in achieving good combinations of mechanical properties like strength, toughness, stiffness, wear resistance and density. Metal matrix composites are produced to overcome these shortcomings and to encounter the worldwide requirement for light weight materials with higher specific strength, corrosion resistant, high stiffness and excellent wear resistant properties [1][2]. The properties of aluminum alloy like low density, light weight, easy processing technique and fine engineering characterstics favored it as matrix material in MMC's [3]. The aluminum matrix series like AA2xxx, AA5xxx, AA6xxx, and AA7xxx have numerous applications in aerospace, defense instrument, architectural and structural components, automobile, sports good, and ship building [1][2][3][4].For the fabrication of metallic matrix composites several type of manufacturing methods are employed. The choice of appropriate manufacturing method highly alters the resulting composite microstructure, dispersion of ceramic agents, interfacial bonding betwe...

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Section: B Tribological Examinationmentioning

confidence: 99%

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Kaushik¹,

Singhaal²

2017

IJET

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“…The previous studies which indicated that porosity within the range of 2 % and 4 % tended to be acceptable in the cast metal matrix composites. The use of borax additive in the combination with the two-step stirring to aim improve the wettability SiC particulates on interfacial Al matrix [4,13]. It was observed that the porosity in the monolithic alloy cast without stirring havehigher levelporosity compared to the composites produced by the twostep stirring and addition the Borax [3].The adoption of the two-step stirring and the addition of borax tended to be decreased the porosity levels and the minimal defectscasting in the composites produced [3,6].…”

Section: Porosity Investigationmentioning

confidence: 99%

“…In this case, the use of borax additive in the combination of two-step stirring was to improve the wettability without pre-heating the SiC particulates and decrease level of porosity until 1,6% [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Compared production behavior of borax and unborax premixed SiC reinforcement Al7Si-Mg-TiB alloys composites with semi-solid stir casting method

Haryono¹,

Sulardjaka²,

Nugroho³

2016

AIP Conference Proceedings

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Abstract. The present study was aimed to investigate the effect of borax additive on physical and mechanical properties of Al7Si-Mg-TiB with the reinforcement of silicon carbide. In this case, the different weight percentage from the reinforcement of SiC (10, 15, and 20% wt), and the borax additive (ratio 1:4) were homogenously added into the matrix by employing the semi-solid stir casting method at the temperature of 590°C. Al7Si-Mg-TiB melted in an electric resistance furnace at 800°C for 25 minutes and the holding time of 5 minutes; SiC was stirred with borax inside the chamber and heated at the temperature of 250°C for 25 minutes. Then, it melted by lowing the temperature into 590°C. The SiC-borax mixture was added into the electric resistance furnace, and automatically stirred by the stirrer at a constant speed (500 rpm for 3 minutes) in the composite A17Si-Mg-TiB. It melted when heated at 750°C for 17minutes,then, casting was performed on the prepared mould. The characterizations of Al7Si-Mg-TiB-SiC/borax were porosity, hardness, and microstructure on the Al7Si-Mg-TiB-SiC/ borax. The porosity of AMC tended to increase along with the increaseof the wt% SiC (1.4%-3.6%); however, borax additive underwent a decrease in porosity (0.14%-1.3%). Further, hardness tended to improve along with the increase of wt% SiC. The unboraxmixture had 79,6 HRB up to 94 HRB. Whereas, the borax additive mixture had 105,8 HRB up to 121 HRB.

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“…The combination of desired properties of metals (ductility and toughness) and ceramics (high strength and high modulus) is the aim of composites production. Composite materials, especially metal matrix composites (MMCs), have found various applications in the new industries [1].…”

Section: Introductionmentioning

confidence: 99%

“…Compared to the ferrous alloys, aluminum alloys have lower density and higher strength to weight ratio, higher thermal and electrical conductivity. On the other hand, they are cheaper than the lighter metals, such as Mg and Ti [1].…”

Section: Introductionmentioning

confidence: 99%

The Characteristics of Alumina Particle Reinforced Pure Al Matrix Composite

Parvin

Rahimian

2012

Acta Phys. Pol. A

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Al 2 O 3 is widely used as the reinforcing additive in the metal matrix composites. The influence of Al 2 O 3 particle size on the density, hardness, microstructure, yield stress, compression strength, and elongation of the sintered Al-Al 2 O 3 composites were investigated. In the present study, 10 wt% of Al 2 O 3 powder with three different particle sizes (3, 12 and 48 µm) were used in the production of the samples. Powder metallurgy technique was utilized to obtain more homogeneous Al 2 O 3 distribution across the composites. The samples were cold pressed at 440 MPa, and sintered at 550 • C for 45 min. Results showed that the relative density of the composite was initially increased with decreasing particle size. However, it was decreased with further particle size reduction. It was also pointed out that the mechanical properties of the specimens were increased with decreasing particle size. The grain size and particle distribution homogeneity was decreased with raising the particle size.

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Production and mechanical properties of Al2O3 particle-reinforced 2024 aluminium alloy composites

Cited by 671 publications

References 25 publications

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Mechanical and Metallurgical Examinations of Stir Cast Aluminum Matrix Composites: A Review Study

Compared production behavior of borax and unborax premixed SiC reinforcement Al7Si-Mg-TiB alloys composites with semi-solid stir casting method

The Characteristics of Alumina Particle Reinforced Pure Al Matrix Composite

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