Enhanced hardness and wear resistance of Al-based hybrid MMCs by using of composite metal boride reinforcement particles

Khoshsima, Sina; Mertdinç, Sıddıka; Motallebzadeh, Amir; Altıntaş, Zerrin; Ağaoğulları, Duygu; Balcı, Özge

doi:10.1016/j.matchemphys.2022.126377

Cited by 15 publications

(5 citation statements)

References 48 publications

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“…The observed increase in hardness shall be attributed to the excessive hardness of LG and hBN relative to the ADC base alloy. This aligns with the results of Khoshsima et al [58], who reported that adding these reinforcements contributed to improved hardness values, indicating increased material strength. Regarding tensile strength (TS) and compressive strength (CS), the ADC-LG-hBN hybrid composites demonstrated superior properties to the base alloy.…”

Section: Effect Of Lg and Hbn On Mechanical Properties Of Hybrid Adc ...supporting

confidence: 92%

Fabrication and characterization of ADC-12 hybrid composites utilizing lemon grass ash and boron nitride through stir-squeeze casting method

Palanivendhan,

Chandradass

2023

Mater. Res. Express

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In recent years, there has been increased interest in hybridizing metal matrix composites using agro-based-waste materials as sustainable choices. Despite the poor tribo-mechanical properties of conventional reinforcement materials, there is immense potential for using alternate reinforcing elements to enhance the mechanical features of matrix composite. In addition, conventional casting procedures present several challenges, including high costs and a lack of adequate mechanical qualities in the finished product. To combat these issues, the authors herein produce the well-known aluminium matrix composite (AMC), ADC 12 alloy, using waste Malabar lemon grass (MLG) ash at a fixed rate (6 wt%) and hexagonal Boron Nitride (hBN) at variable proportions (0, 1.5, 3, 4.5, and 6 wt%) as reinforcing element against traditional reinforcement particles to enhance the tribo-mechanical properties of casted hybrid AMC. In addition, the squeeze casting method produces the hybrid AMC, dramatically decreasing production costs and enhancing final product qualities. The hybrid AMC formed by squeeze casting is examined for its mechanical, corrosion, and tribological characteristics, with the findings indicating that the addition of MLG and hBN improved the mechanical, corrosion, and tribological properties of the ADC-MLG-hBN composites, with 6wt% MLG and 4.5wt% hBN reinforcements producing the optimal result. The experimental density of ADC-MLG- hBN composites was reduced by 8% when compared to the ADC 12 alloy, while the composites' tensile, hardness, and compressive strength were increased by 118.9%, 36.7%, and 33.6%, respectively. Similarly, the developed composite showed an improved corrosion resistance of 43.8% for 24 hours, and the wear rate decreased by 90.4%.

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Section: Effect Of Lg and Hbn On Mechanical Properties Of Hybrid Adc ...supporting

confidence: 92%

Fabrication and characterization of ADC-12 hybrid composites utilizing lemon grass ash and boron nitride through stir-squeeze casting method

Palanivendhan,

Chandradass

2023

Mater. Res. Express

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“…Wear loss of the composite material is reduced generally speaking as the amount of B 4 C particles present increases. Another reason wear increases with sliding speed is that rubbing action warms the composite and causes it to soften, leading to more loss of material [24,25]. Due to the increase in temperature, plastic deformation of the test piece occurs at higher sliding speeds.…”

Section: Efect Of Sliding Speed On Wearmentioning

confidence: 99%

Effect of Boron Carbide Particles Addition on the Mechanical and Wear Behavior of Aluminium Alloy Composites

Ravindra¹,

Rajesh

Kumar³

et al. 2023

Advances in Materials Science and Engineering

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In this research, synthesis and assessment of the mechanical and wear possessions of Al7049-nano B4C composites are determined by experiments. Using the liquid metallurgy route, a stir casting technique was used to create composites with increasing concentrations of nano B4C from 3 to 9 weight %. Each composite’s reinforcement particles were heated to 400 degrees Celsius before being added to the molten Al7049 alloy in two separate steps, i.e., two-stage stir casting to optimise wettability and distribution. Scanning electron microscopy (SEM) was utilised to examine the microstructure, and energy dispersive spectroscopy (EDS) was utilised to determine the elemental make-up. Mechanical characteristics of composites were determined by subjecting them to tensile, compression, and hardness tests. Wear tests were conducted as per ASTM G99 standards with varying loads and speeds. Nanosized B4C particles were found to be dispersed throughout the sample space in a microstructural analysis. Hardness, ultimate strength, yield strength, and compression strength of Al7049 alloy composites were found to increase significantly as the weight percentage of nano B4C was increased. Additionally, compared to the unreinforced form, the ductility of the Al7049 alloy composites was slightly reduced. SEM micrographs of tensile-fractured specimens were used for research into the field of tensile fractography. Nano B4C reinforced composites exhibited superior wear resistance as compared to Al7049 alloy. These prepared composites can be used for wing root fitting of an aircraft.

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“…The wear resistance of the composites is mainly influenced by the microhardness of the composite. The hard reinforcements highly enhance the microhardness of the composites [12][13][14]. The influence of the stir casting process parameters, such as stirring speed, melting temperature, and stirring time, is determined on its responses.…”

Section: Introductionmentioning

confidence: 99%

Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites

Ananth¹,

Krishnan²,

Thirugnanam³

et al. 2023

Journal of Nanomaterials

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Aluminum matrix composites are widely employed in aerospace, military, automobile, and transport applications. The high-strength with low-weight materials are required to fulfill the requirement of high-performance applications. The low-weight materials are reinforced with hard reinforcements to obtain high-strength-to-weight properties for using high-performance applications. The process parameters of fabrication technique define the mechanical and tribological properties. Many types of optimization tools are used for optimizing the process parameters of fabrication method. In this research, the aluminum alloy 7050 and boron carbide are selected as matrix material and reinforcement material. The fabrication of Al7050/B4C composites is produced by the stir casting method. The optimization on stir casting process parameters is done by using the Taguchi approach. The L9 orthogonal array is chosen for this investigation. The chosen input stir casting process parameters are wt% B4C, stirring time (10, 15, and 20 min), stirring speed (300, 350, and 400 rpm), and melting temperature (700, 750, and 800°C). The microhardness is selected as a valuable response parameter for optimizing the stir casting process parameters. The influencing stir casting process parameter sequence is determined by using mean table. The influencing parameters of stir casting on microhardness are stirring speed, stirring time, wt% B4C, and melting temperature. The 9 wt% of boron carbide addition increases the microhardness, and it is higher than the other wt%. The optimum combination of input process parameter combination is 9 wt% boron carbide, 750°C melting temperature, 350 rpm stirring speed, and 15 min stirring time (A3B2C2D2). The percentage of microhardness value improvement is 20.3%.

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Enhanced hardness and wear resistance of Al-based hybrid MMCs by using of composite metal boride reinforcement particles

Cited by 15 publications

References 48 publications

Fabrication and characterization of ADC-12 hybrid composites utilizing lemon grass ash and boron nitride through stir-squeeze casting method

Fabrication and characterization of ADC-12 hybrid composites utilizing lemon grass ash and boron nitride through stir-squeeze casting method

Effect of Boron Carbide Particles Addition on the Mechanical and Wear Behavior of Aluminium Alloy Composites

Optimization on Stir Casting Process Parameters of Al7050/Nano-B4C Metal Matrix Composites

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