Investigation on mechanical properties of aluminium 7075 - boron carbide - coconut shell fly ash reinforced hybrid metal matrix composites

Subramaniam, Balasubramani; Natarajan, Balaji; Kaliyaperumal, Balasubramanian; Chelladurai, Samson Jerold Samuel

doi:10.1007/s41230-018-8105-3

Cited by 104 publications

(28 citation statements)

References 29 publications

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“…It seems that the addition of a certain amount weight percentage of reinforcements (5-15 wt%) B 4 C entails a higher yield strength (~ 136 MPa) at the expenses of lower tensile strength in respect to base material AA6061. The results agree with [22], where by an increase in B 4 C they obtained a lower tensile strength for 15 wt% B 4 C. Table 1 shows the value of the break load, ultimate tensile strength (UTS), % of elongation, and yield stress for the three samples and a base metal. It is observed that breaking load, UTS, and % of elongation are reduced in a gradual manner while increasing wt.…”

Section: Tensile Behavioursupporting

confidence: 83%

Mechanical and tribological characteristics of boron carbide reinforcement of AA6061 matrix composite

Hynes¹,

Raja²,

Tharmaraj

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The use of boron carbide-reinforced aluminium matrix composites has grown rapidly in critical applications of aerospace industries, automotive sectors, military, and nuclear engineering. However, boron carbide reinforcement within AA6061 alloy is worthy of investigation in terms of its mechanical and tribological properties. Novel aluminium matrix composites were developed with three different reinforcements (i.e. 5, 10, and 15 wt% of B 4 C) by using the stir casting process. The developed samples were then tested for performance in terms of mechanical properties (i.e. tensile strength, bending strength, impact strength, shear properties, and micro-hardness). The microstructure of the developed samples was analysed using a scanning electron microscope. By adding 5% B 4 C reinforcement, the samples display enhanced mechanical properties (high bending, increased resistance to impact test, and shear strength). The micro-hardness tends to increase by increasing the percentage of reinforcement. The novel composites have superior wear resistance due to an increase in the content of B 4 C particles. The measurements indicate that the wear rate resistance is significantly higher for the composite material with a large amount of B 4 C particles when was compared with AA6061 alloy. The patterns of surface analysis reveal a homogeneous distribution of ceramic reinforcements in 5 and 15 wt% of B 4 C samples, as well as a low agglomeration of embedded particles.

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Section: Tensile Behavioursupporting

confidence: 83%

Mechanical and tribological characteristics of boron carbide reinforcement of AA6061 matrix composite

Hynes¹,

Raja²,

Tharmaraj

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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“…The reinforcement phase is evenly distributed or embedded into the matrix phase [6]. The matrix is defined as a metal alloy in the productivity of the composite.…”

Section: Composite Materialsmentioning

confidence: 99%

“…Aluminium 7075 is an aluminium alloy, in which grades usually used in production of 7075-T6, 7075-T651. The chemical composition and properties of Al7075 is shown in Table no 1 & 2 respectively [6]. Al7075 are often preferred in transport, marine, automotive and aviation applications, because of its high strength-to-weight ratio.…”

Section: Al7075 Alloymentioning

confidence: 99%

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Review on properties of aluminium metal matrix composites

Subramaniam¹,

Purusothaman²,

Karuppusamy³

et al. 2020

Journal of Mechanical and Energy Engineering

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Nowadays, the global industries producing mechanical components are moving towards the usage of composites to reduce weight at the same time without compromising with characteristics of the material being used. This new combination of material provides specific desired properties when combined with various reinforcement materials like SiC, B4C, Al2O3, MgO etc., It is widely used in various industries like aerospace, automobile and marine industries. This property specific tailorable metal matrix composite with Al7075 as the base material can be fabricated using various techniques such as stir casting, high end ball milling, ultrasonic assisted casting, powder metallurgy, squeeze casting friction stir casting etc., out of which stir casting method is preferred by many researchers as stir casting method is seen to provide better distribution of reinforcement particles throughout the metal matrix. It is evident from the research of various authors that when the base material Al7075 is reinforced with the above-mentioned ceramic, it is found that there is a decrease in density and increase in hardness, compressive strength and wear resistance. Here, both physical and mechanical behaviour of aluminium reinforced composites with the effect of the particle size changes, effects after reinforcement and other processing and fabrication methods have been discussed.

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“…Aluminum matrix composite has gain importance than Mg because of ease of fabrication [3]. AA6061 series possess moderate strength with lightweight and it is widely used for structural, aviation and automobile applications [4].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and property evaluation of Al 6061 + x% (RHA + TiC) hybrid metal matrix composite

Bhasha

Balamurugan²

2019

SN Appl. Sci.

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The present work aims in understanding the mechanical properties and strengthening behavior of Al 6061 based particulate hybrid aluminium matrix composites (PHAMCs) reinforced with rice husk ash (RHA) and TiC particles (sizes; 10 µm) fabricated by liquid metallurgical route. RHA + TiC particles (3 wt%, 5 wt%, 7 wt%, and 9 wt%) are added in equal proposition in the hybrid composite which is fabricated through stir-casting technique. Samples are named as S1, S2, S3, S4 based on the proposition of RHA and TiC, whereas Al 6061 alloy is casted and named as S0. Fabricated composites were homogenized at 400 °C for 1 h and then aged to 115 °C for 24 h. X-ray diffraction result confirms the presence of principle elements like Al, TiC, Si and oxygen without the formation of any intermetallic elements. Property of PHAMCs such as ultimate tensile strength, yield strength, and micro Vickers hardness had improved by 31%, 17.1%, and 18%, respectively with increase in the percentage of reinforcement. Addition of reinforcement slightly lowers the mechanical properties of PHAMCs which is due to agglomerations and porosity. Reinforcement with more than 7% of RHA and TiC in matrix significantly effect the density, impact energy and percentage of elongation to a maximum of 3.88%, 28.52%, and 29.91%, respectively. Microstructure of the fractured surfaces are analysed through SEM and it is reported.

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Investigation on mechanical properties of aluminium 7075 - boron carbide - coconut shell fly ash reinforced hybrid metal matrix composites

Cited by 104 publications

References 29 publications

Mechanical and tribological characteristics of boron carbide reinforcement of AA6061 matrix composite

Mechanical and tribological characteristics of boron carbide reinforcement of AA6061 matrix composite

Review on properties of aluminium metal matrix composites

Fabrication and property evaluation of Al 6061 + x% (RHA + TiC) hybrid metal matrix composite

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