Study of the microstructure and mechanical characteristics of AZ91–SiCp composites fabricated by stir casting

Saleh, Bassiouny; Jiang, Jinghua; Fathi, Reham; Xu, Qian; Wang, Lisha; Ma, Aibin

doi:10.1007/s43452-020-00071-9

Cited by 44 publications

(21 citation statements)

References 34 publications

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“…The metal matrix composites of AZ91 magnesium alloy with different types of ceramics and metallic reinforcements were fabricated. Their physical, mechanical properties were evaluated by various researchers [ 2 , 4 , 6 , 7 ] to know the effect of the addition of different reinforcements.…”

Section: Introductionmentioning

confidence: 99%

Effect of Variation of SiC Reinforcement on Wear Behaviour of AZ91 Alloy Composites

Kumar

Mukhopadhyay

et al. 2021

Materials

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In this investigation, the extensive wear behaviour of materials was studied using SiC reinforced magnesium alloy composites fabricated through the stir casting process. The wear properties of AZ91 alloy composites with a small variation (i.e., 3%, 6%, 9% and 12%) of SiC particulates were evaluated by varying the normal load with sliding velocity and sliding distance. The worn surfaces were examined by scanning electron microscope to predict the different wear mechanisms on the pin while sliding on the hard disk in the dry sliding wear test condition. The microhardness of the SiC reinforced AZ91 composites was found to be more than the un-reinforced AZ91 alloy. Pins tested at load 19.62 N, and 2.6 m/s exhibited a series of short cracks nearly perpendicular to the sliding direction. At higher speed and load, the oxidation and delamination were observed to be fully converted into adhesion wear. Abrasion, oxidation, and delamination wear mechanisms were generally dominant in lower sliding velocity and lower load region, while adhesion and thermal softening/melting were dominant in higher sliding velocity and loads. The wear loss, wear rate and coefficient of friction of the SiC reinforced composites were lower than that of the unreinforced alloy. This is due to the fact of higher hardness exhibited by the composites. The wear behaviour at the velocity of 1.39 m/s was dominated by oxidation and delamination wear, whereas at the velocity of 2.6 m/s the wear behaviour was dominated by abrasion and adhesion wear. It was also found that the plastic deformation and smearing occurred at higher load and sliding velocity.

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Section: Introductionmentioning

confidence: 99%

Effect of Variation of SiC Reinforcement on Wear Behaviour of AZ91 Alloy Composites

Kumar

Mukhopadhyay

et al. 2021

Materials

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“…The average grain sizes of AZ31/5%SiC and AZ31/10%SiC composites were 16 μm and 10 μm, respectively. Precipitation hardening and increasing the percentage of reinforcement particles caused the grain size to reduce significantly 55 . By decreasing the grain size, the activation energy required to form twins increases 56 .…”

Section: Resultsmentioning

confidence: 99%

Thermal cycles behavior and microstructure of AZ31/SiC composite prepared by stir casting

Mousavi

Sharifi

Tayebi

et al. 2022

Sci Rep

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In the present work, the effect of thermal cycles on the physical and thermal properties of AZ31 alloy and AZ31/5wt%SiC and AZ31/10wt%SiC composites was investigated. Samples were prepared using the stir casting method and then subjected to precipitation hardening. Thermal cycles were done for as-cast and aged samples with V-shaped notch under 300, 600, and 900 heating and cooling cycles at 150 and 350 °C. The crack length (CL) was evaluated using optical microscope (OM), scanning electron microscope (SEM), and energy-dispersive scanning electron (EDS) analysis. Also, density, porosity, thermal expansion coefficient of the samples were evaluated. X-ray diffraction (XRD) analysis was employed to assess the phases present in the material. The results demonstrated that by increasing the number of thermal cycles up to 600 at 150 °C and 350 °C, the porosity and density of the as-cast and aged AZ31 alloy decreased and increased, respectively; however, the density and open porosity were remained constant for the composite samples. The crack's length enlarged with increasing the thermal cycles from 300 to 600 µm at 150 °C and 300 to 900 µm at 350 °C. It was found that the reinforcement and precipitates prevented the rapid growth of the crack in the magnesium matrix. All in All, composite and the aged samples demonstrated better thermal fatigue resistance compared with that of the unreinforced alloy and as-cast samples, respectively.

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“…Серія: Технічні науки Вип. 44 p-ISSN: 2225-6733; e-ISSN: 2519-271X Прийнято вважати, що композиційні матеріали -це матеріали, що містять дві або більше фази (матрицю та армуючі частинки), які істотно відрізняються за властивостями і мають чітку межу розділу [4]. Властивості готового композиційного матеріалу перевищують властивості складових його компонентів.…”

Section: вісник приазовського державного технічного університету 2022рunclassified

Analysis of technological parameters of cast composite materials with a matrix of light alloys manufacture

Дан¹,

Trofimova²

2022

Reporter of the Priazovskyi State Technical University. Section

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L.O. Dan, L.O. Trofimova. Analysis of technological parameters of cast composite materials with a matrix of light alloys manufacture.The successful functioning and further development of most modern industries, such as aerospace, transport, military, biomedicine, is not possible without the use of lightweight, durable and inexpensive materials to manufacture. Light alloys are widely used in industry and everyday life due to the high complex of physical and mechanical properties, wear and corrosion resistance as well as low cost. In this regard, the use of light alloys as a basis for composite materials is justified and expedient. The properties of the finished composite material exceed the properties of its constituent components. The potential of these materials has not been fully used to this day despite the growing interest in metal matrix composites and extensive investigations aimed at the development of production technology and the introduction of advanced systems based on light matrices. The article presents a brief review of the literature on the analysis of the main components of the technology of cast composite materials (CCM) based on light alloys of aluminum and magnesium reinforced by particles of different types. Particular attention is paid to the choice of the matrix alloy, the type, size and amount of reinforcing particles introduced into it, as well as the thermal-time and kinetic parameters of the process. The matrix alloy must be uniform, strong, light and inexpensive. The particles must have a high hardness and be optimally distributed in the matrix, to be securely fixed in it. An important element of the technology of manufacturing CCM by liquid-phase method is also a method of introducing solid particles of liquid metal. Several ways of introducing reinforcing particles into the melt were analysed too. Only the optimal combination of all these elements can provide composite materials with a high level of physical, mechanical and operational properties. In addition, the article suggests directions for further research in this area.

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Study of the microstructure and mechanical characteristics of AZ91–SiCp composites fabricated by stir casting

Cited by 44 publications

References 34 publications

Effect of Variation of SiC Reinforcement on Wear Behaviour of AZ91 Alloy Composites

Effect of Variation of SiC Reinforcement on Wear Behaviour of AZ91 Alloy Composites

Thermal cycles behavior and microstructure of AZ31/SiC composite prepared by stir casting

Analysis of technological parameters of cast composite materials with a matrix of light alloys manufacture

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