Compressive behavior of Csf/AZ91D composites by liquid–solid extrusion directly following vacuum infiltration technique

Liu, J.; Qi, Lehua; Guan, Juntao; Ma, Yuan; Zhou, Jiming

doi:10.1016/j.msea.2011.10.051

Cited by 29 publications

(10 citation statements)

References 23 publications

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“…The second intermetallic is Al 4 Mn (spot 3 in Figure 3 b and represented in Figure 3 e). These microstructure features in terms of intermetallic phases, morphologies, and their dispersion of the as-cast AZ91 matrix are typically agreed well with that examined and reported for the same alloy material in other works [ 22 , 23 , 24 ].…”

Section: Resultssupporting

confidence: 91%

Wear Characteristics of Mg Alloy AZ91 Reinforced with Oriented Short Carbon Fibers

et al. 2022

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Light-weight metal matrix composites, especially magnesium-based composites, have recently become more widespread for high-efficiency applications, including aerospace, automobile, defense, and telecommunication industries. The squeeze cast AZ91 base material (AZ91-BM) and its composites having 23 vol.% short carbon fibers were fabricated and investigated. The composite specimens were machined normal to the reinforced plane (Composite-N) and parallel to the reinforced plane (Composite-P). All the as-casted materials were subjected to different tests, such as hardness, compression, and wear testing, evaluating the mechanical properties. Dry wear tests were performed using a pin-on-disk machine at room temperature under different applied wear loads (1–5 N) and different sliding distances (0.4461×104–3.12×104 m). The microstructures and worn surfaces of the fabricated AZ91-BM and the two composite specimens were investigated using a scanning electron microscope (SEM) equipped with an energy dispersive spectroscopy (EDS) advanced analysis system. The wear debris was collected and investigated also under the SEM. The results showed significant improvement in hardness, compressive strength, and wear resistance of the composite specimens (Composite-N and Composite-P) over the AZ91-BM. The compressive strength and wear resistance are more fibers orientation sensitive than the hardness results. When the fiber orientation is parallel to the sliding direction (Composite-N), the weight loss is somewhat lower than that of the fiber orientation perpendicular to the sliding direction (Composite-P) at a constant wear load of 2 N and the sliding distances of 0.4461×104, 1.34×104 , and 2.23×104 m. In contrast, the weight loss of Composite-P is lower than Composite-N, especially at the highest sliding distance of 3.12×104 m due to the continuous feeding of graphite lubricant film and the higher compressive strength. Plastic deformation, oxidation, and abrasive wear are the dominant wear mechanisms of AZ91-BM; in contrast, abrasive and delamination wear are mainly the wear mechanisms of the two composites under the applied testing conditions.

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Section: Resultssupporting

confidence: 91%

Wear Characteristics of Mg Alloy AZ91 Reinforced with Oriented Short Carbon Fibers

et al. 2022

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“…Equipment requirements in vacuum pressure infiltration process are more comprehensive and complex compared with other fabrication methods [12]. Liquid-solid extrusion directly following vacuum infiltration (LSEVI) is a special technique that combines the advantages of traditional vacuum infiltration and squeeze casting process, in which magnesium alloy melting, preform preheating, vacuum infiltration and liquid-solid extrusion can be integrated in an experiment system [13][14][15]. crystallised and solidified in the carbon fibre preform under an appropriate pressure.…”

Section: Introductionmentioning

confidence: 99%

Effect of holding pressure on densification and mechanical properties of C_f/Mg composites

Wei

et al. 2017

Materials Science and Technology

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Carbon fibre reinforced magnesium alloy matrix composites were fabricated by using liquidsolid extrusion directly following vacuum infiltration technique. The experimental results showed that the microstructures of Cf/Mg composites depended on the holding pressure. The porosity was reduced gradually, and the densification was improved obviously, respectively, with the increase of the holding pressure. The densification, hardness and Ultimate tensile strength of Cf/Mg composites were significantly improved as the holding pressure increased in the range of 0.1-15 MPa. The densification was not obvious, but the UTS of the Cf/Mg composites decreased gradually as the holding pressure increased in the range of 25-45 MPa.The Cf/Mg composites presented a good performance when the holding pressure was about 15 MPa.

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“…However, the cold and hot deformability of this kind of composite is relatively poor because of the hexagonal close-packed crystal structure of magnesium as well as the brittle reinforcements embedded in it [3][4][5] . During being thermo-mechanical processed, the plastic deformation leads to the rearrangement or breakage of reinforcements as well as the dynamic recrystallization of magnesium [6,7] .…”

Section: Introductionmentioning

confidence: 99%

Constitutive equation for the hot deformation behavior of Csf/AZ91D composites and its validity for numerical simulation

Wang

Gui

et al. 2016

Mechanics of Materials

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Highlights The flow stress depends largely on strain besides on temperature and strain rate.  The model can formulate the flow stress-strain behaviors accurately.  The FEM results based on the model agree well with the experimental ones.  The model is valid for FE analysis on the current hot forming of the composites. The results confirmed that the established constitutive equation can accurately describe the hot plastic deformation behavior of C sf /AZ91D composites, and can be used for the finite element analysis on the hot forming process.

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Compressive behavior of Csf/AZ91D composites by liquid–solid extrusion directly following vacuum infiltration technique

Cited by 29 publications

References 23 publications

Wear Characteristics of Mg Alloy AZ91 Reinforced with Oriented Short Carbon Fibers

Wear Characteristics of Mg Alloy AZ91 Reinforced with Oriented Short Carbon Fibers

Effect of holding pressure on densification and mechanical properties of C_f/Mg composites

Constitutive equation for the hot deformation behavior of Csf/AZ91D composites and its validity for numerical simulation

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Compressive behavior of Csf/AZ91D composites by liquid–solid extrusion directly following vacuum infiltration technique

Cited by 29 publications

References 23 publications

Wear Characteristics of Mg Alloy AZ91 Reinforced with Oriented Short Carbon Fibers

Wear Characteristics of Mg Alloy AZ91 Reinforced with Oriented Short Carbon Fibers

Effect of holding pressure on densification and mechanical properties of Cf/Mg composites

Constitutive equation for the hot deformation behavior of Csf/AZ91D composites and its validity for numerical simulation

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Effect of holding pressure on densification and mechanical properties of C_f/Mg composites