Wear behaviors of Cf/Mg composites fabricated by extrusion directly following vacuum pressure infiltration technique

Qi, Lehua; Guan, Juntao; Liu, Jian; Zhou, Jiming; Wei, Xianjun

doi:10.1016/j.wear.2013.08.024

Cited by 17 publications

(14 citation statements)

References 22 publications

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“…Q = KW/H, in this equation, Q is the worn volume per unit sliding distance, W is the applied load, H is the hardness of the worn material, and K is the wear coefficient. Similar findings had been made in several earlier sliding wear studies on Mg-based composites with various ceramic reinforcements (Ref [16][17][18]. The Mg-1 wt.% SiC nanocomposite shows an improvement in the wear resistance of 1.2 times at the distance of 2000 m.…”

Section: Wear Propertiessupporting

confidence: 88%

Wear Properties of Hot-Extruded Pure Mg and Mg-1 wt.% SiC Nanocomposite

Guo

Wang

et al. 2015

J. of Materi Eng and Perform

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This paper presents the wear properties of hot-extruded pure Mg and its composite reinforced with 1 wt.% SiC nanoparticles. Wear tests were performed under dry and oil sliding conditions using ball-on-flat configuration. It was found that the nanocomposites show much lower wear loss mainly due to hardness improvement caused by the nanoparticles and grain refinement. The wear loss gradually decreases as the sliding speed increases and then it begin to rise beyond a critical value. With the wear temperature improves from 25 to 190°C, wear loss of nanocomposites reduces.

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Section: Wear Propertiessupporting

confidence: 88%

Wear Properties of Hot-Extruded Pure Mg and Mg-1 wt.% SiC Nanocomposite

Guo

Wang

et al. 2015

J. of Materi Eng and Perform

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“…This phenomenon is detected only with the normal composite and combined with delamination layers of AZ91 matrix, due to the accumulated friction heat and severe plastic deformation. These two reasons cause deterioration in the wear properties in terms of weight loss of the normal composite specimen compared to the parallel composite and the AZ91 matrix at the highest applied wear load of 5 N. Qi et al [ 20 ] reported a decrease in the weight loss of the AZ91/10 vol.% short carbon fiber composites compared to the AZ91 matrix alloy. They also concluded that the fiber orientation governs the wear behavior of the composite.…”

Section: Resultsmentioning

confidence: 99%

“…Some carbon fibers (spot 5 in Figure 11 a and represented in Figure 11 e) may experience pullout in the case of the normal composite specimen (carbon fibers parallel to the sliding direction suffer from friction shear force). These features indicate that the wear mechanisms are abrasion and delamination mechanisms [ 2 , 20 ]. In fact, the amount of the smearing film of the graphite solid lubricant governs the wear performance of the AZ91 self-lubricating composite materials against the harder rubbing counterface.…”

Section: Resultsmentioning

confidence: 99%

“…The dispersion and orientation of the reinforcements have a considerable effect on the mechanical properties of Mg-based MMC. Fibers are the essential type of reinforcements because they have the greatest influence on the directional strength and stability of composites [ 20 ]. The addition of carbon fiber is believed to be an effective method for improving the mechanical properties of Mg alloys.…”

Section: Introductionmentioning

confidence: 99%

“…However, the low wettability between carbon fibers and Mg alloy as matrix becomes an important issue that should be considered, because the carbon fibers might react with some metallic elements during composite manufacturing. Thus, the adhesion bonding between matrix and fiber would be a critical factor in the determination of the composites’ performance [ 20 , 22 ]. Some efforts have been made to improve the wettability of carbon fibers and Mg by adding alloying elements to control the chemical reaction at the interface, and to optimize the bonding strength between carbon fiber and Mg alloys [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructure and Mechanical Properties of AZ91 Rein-Forced with High Volume Fraction of Oriented Short Carbon Fibers

et al. 2022

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In this study, AZ91/23 vol.% short carbon fiber composite was produced by a squeeze casting technique using a cylindrical pre-form of treated carbon fibers, in which the fibers are randomly oriented in the horizontal plane. Cylindrical specimens (height = 9 mm and diameter = 6 mm) were machined from the as-cast AZ91 matrix and its composite. The full behavior of the produced composite was studied through the test specimens machined in two directions, namely parallel to the reinforced plane (in the radial direction of the cast cylinder) and normal to the reinforced plane (in the axial direction of the cast composite). The microstructures of the produced composite specimens were investigated using SEM equipped with EDS analysis. Density, hardness, compressive, and wear behavior were also investigated. For comparison, the AZ91 matrix was evaluated as a reference. The microstructure of the produced AZ91 matrix alloy and its composite revealed dense materials without casting defects. Both composite specimens show improvement in hardness, compressive strength, and wear properties over the AZ91 matrix. The compressive and wear properties are more fiber orientation-dependent than the hardness results. The parallel composite specimen depicts the highest compressive properties in terms of yield compressive strength (311 MPa) and ultimate compressive strength (419 MPa), compared to that shown by the AZ91 matrix and the normal composite specimen. This improvement in compressive strength was at the expense of ductility. The parallel composite specimen shows the lowest ductility (R = 3.8%), compared to that given by the normal composite specimen (R = 7.1) and the AZ91 matrix alloy (R = 13.6). The wear testing results showed that at the highest wear load of 5 N, the material weight loss of the parallel composite specimen decreases by 44% and 64% compared to the AZ91 matrix and the normal composite specimen, respectively.

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Dry Sliding Wear Properties of AZ31-Mg2Si Magnesium Matrix Composites

Guo

et al. 2016

J. of Materi Eng and Perform

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Wear behaviors of Cf/Mg composites fabricated by extrusion directly following vacuum pressure infiltration technique

Cited by 17 publications

References 22 publications

Wear Properties of Hot-Extruded Pure Mg and Mg-1 wt.% SiC Nanocomposite

Wear Properties of Hot-Extruded Pure Mg and Mg-1 wt.% SiC Nanocomposite

Microstructure and Mechanical Properties of AZ91 Rein-Forced with High Volume Fraction of Oriented Short Carbon Fibers

Dry Sliding Wear Properties of AZ31-Mg2Si Magnesium Matrix Composites

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