Structural and mechanical characterization of Al-based composite reinforced with heat treated Al2O3 particles

Hossein-Zadeh, Mohsen; Mirzaee, Omid; Saidi, Peyman

doi:10.1016/j.matdes.2013.08.036

Cited by 53 publications

(13 citation statements)

References 17 publications

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“…35 By adding fine Al 2 O 3 to the molten aluminum, its average grain size decreased and its mechanical properties increased. 36 Elemental mapping of the composites is shown in Figure 3, where Al, oxygen (O), carbon (C), and Si are represented by different colors for easy element identification. Elemental mapping confirmed that the elements' distribution in the composite was uniform.…”

Section: Resultsmentioning

confidence: 99%

“…In this method, Al 2 O 3 as fine particles throughout the matrix can act as barriers to dislocations; thus, mechanical properties are enhanced. 36 The data available in the literature regarding the compressive strength of composites are very limited. 37,[39][40][41][42][43] Compared to available data, the compressive strength obtained in this study was high among micron-sized reinforcement and close to the nano-sized reinforcement (Figure 7).…”

Section: Mechanical Properties Of Produced Compositesmentioning

confidence: 99%

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Development of alumina reinforced aluminum metal matrix composite with enhanced compressive strength through squeeze casting process

Muraliraja

Arunachalam

Al-Fori

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part L:

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Aluminum metal matrix composites, which exhibit significantly high compressive strength, were produced through the squeeze casting process using aluminum 7075 alloy as the matrix material and 2.5 wt% alumina as reinforcement. The process parameters of squeeze casting were prudently selected based on the literature in order to obtain better mechanical properties such as compressive strength and hardness. Samples were examined using an optical microscope, energy dispersive spectroscopy, a scanning electron microscope, and X-ray diffraction analysis. The optical micrograph showed low porosity in the produced composite, which matched the porosity measured using the Archimedes principle. The scanning electron microscope showed uniform distribution of reinforcement in the grain boundaries of the matrix. An X-ray diffraction analysis confirmed the presence of Al 2 O 3 particles in the composite. The hardness of the composite improved from 44 to 59 HRB. The compressive strength of the composite improved significantly with the addition of alumina reinforcement to 587 MPa when compared to Al 7075 alloy as well as other aluminum metal matrix composites reported in the literature.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical Properties Of Produced Compositesmentioning

confidence: 99%

Development of alumina reinforced aluminum metal matrix composite with enhanced compressive strength through squeeze casting process

Muraliraja

Arunachalam

Al-Fori

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…15 LM25 alloy reinforced with 10 wt% of Al 2 O 3 was investigated before and after the heat treatment and found that, heat treated composite showed 27% improvement in hardness. 16 LM25 alloy with different content levels (0.2, 0.4 0.6, and 0.8 wt%) of γ-Al 2 O 3 particles, were subjected to T4 heat treatment to observe significant changes in morphology of eutectic Si with fine structure. 17 LM25 alloy was subjected to T6 heat treatment with electromagnetic induction and obtained a maximum hardness of 85.5BHN, which implies a considerable improvement (39.8%) in hardness along with wear resistance (33.3%).…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on mechanical and tribological properties of aluminum metal matrix composites

Sam

Radhika

Sai

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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LM25 aluminum alloy reinforced with 10 wt% of TiB2, WC, and ZrO2 were squeeze cast to investigate the effect of T6 heat treatment on tribo-mechanical properties. Among all, WC-reinforced composite achieved superior mechanical properties at the aging time of 8 h. Microstructural examination performed on all composites and alloy concluded that the presence of WC in T6 LM25 caused reduction of α-Al dendrite size, exhibiting superior properties for this composite. X-ray diffraction analysis conducted on alloy and WC-reinforced superior composite revealed formations of phases, which improved their mechanical properties. Energy-dispersive X-ray spectroscopy analysis quantified the actual intensity of WC presence in the superior composite along with its other constituents. Response surface methodology model developed for wear test of the superior composite involves parametric range like applied load (10–50 N), sliding velocity (1–4 m/s), and sliding distance (500–2500 m). Analysis of variance along with regression analysis proved that, statistical analytical model developed good relationship between the actual wear rate and process parameters. Response surface plots represented the linearly increasing wear trend with respect to load and sliding distance. Wear rate dropped initially and raised later on along with velocity. Scanning electron microscopy exhibited the surface deformation prevailing on the composite surface at high load.

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“…In this work, Al 2 O 3 nanoparticles were mixed with Mg particles so as to improve their wettability (addition of Mg increases the surface energy of nanoparticles). Hossein-Zadeh et al (2014) studied the effect of heat treating Al 2 O 3 nanoparticles prior to its addition into molten Al matrix on matrix/particle wettability. The heat treatment improved the wettability due to grooving at the grain boundary junctions, thereby improving the microstructure and mechanical properties when compared to the nanocomposite having particles without any heat treatment.…”

Section: Al-compositesmentioning

confidence: 99%

Light Metal Matrix Composites

Jayalakshmi¹,

Gupta

2015

SpringerBriefs in Materials

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Fundamentals of metal matrix composites are overviewed. The various light metal matrix systems (particularly Al and Mg) and the different types of reinforcements used are mentioned. The various composite production methods are described. Strengthening mechanisms that define the enhancement in properties of composites are discussed. The microstructural and mechanical properties of the composites are summarized. In addition, the several disadvantages encountered in MMCs due to ceramic reinforcement addition are understood from interfacial characteristic/properties. Keywords

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Structural and mechanical characterization of Al-based composite reinforced with heat treated Al2O3 particles

Cited by 53 publications

References 17 publications

Development of alumina reinforced aluminum metal matrix composite with enhanced compressive strength through squeeze casting process

Development of alumina reinforced aluminum metal matrix composite with enhanced compressive strength through squeeze casting process

Effect of heat treatment on mechanical and tribological properties of aluminum metal matrix composites

Light Metal Matrix Composites

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