Wear of semi-solid rheocast SiCp/Al metal matrix composites

Curle, Ulyate Andries; Ivanchev, L.

doi:10.1016/s1003-6326(10)60594-8

Cited by 30 publications

(11 citation statements)

References 4 publications

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“…[214] Higher porosity levels may result in weaker bonding between the matrix and reinforcement and thus, inferior mechanical properties. [111,170,215]…”

Section: Porositymentioning

confidence: 99%

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

2020

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Aluminum metallic composites (AMCs) have been recognized as promising material exhibiting excellent functional and structural properties that can be significantly tailored to meet the industrial demands as well as to meet the design criteria for many applications such as aerospace, automobiles, marine, defense, and so on. Herein, an effort is made to provide an extensive overview of the various processing techniques adopted for the development of AMCs. Various processing kinetics of stir casting technique are elaborated comprehensively in terms of existing challenges, conceivable modifications incorporated in it. Considering the critical assessment on mechanical properties made through various kinds of literature, an electromagnetic stir-squeeze casting synergically equipped with ultrasonic transducing probe and bottom pouring attachments is recommended as the most appropriate processing technique for the development of AMCs. Moreover, appropriate recommendations regarding process variables and additives/modifiers, and potential future research opportunities are also addressed significantly to encourage the ongoing and upcoming researchers, which lead this critical Review toward novelty and uniqueness.

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“…[214] Higher porosity levels may result in weaker bonding between the matrix and reinforcement and thus, inferior mechanical properties. [111,170,215]…”

Section: Porositymentioning

confidence: 99%

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

2020

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“…Mazahery and Shabani [22] investigated the wear behavior of the sol-gel coated B 4 C particle reinforced A356 matrix composites and concluded that the wear rate of the composites reinforced with coated B 4 C was less than that of the matrix alloy and decreased with increasing volume fraction of B 4 C particles. The research results of wear behavior of the rheocasted SiC p /Al metal matrix composites (MMC) showed that the wear rate of the 11% SiC MMC was higher than that of the 50% SiC MMC [23]. The A356/Al 2 O 3 metal matrix composites were fabricated by conventional stirring and semisolid processing [24].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behavior of Nano-Sized SiCp/7075 Composite Parts Formed by Semisolid Processing

Jiang

Xiao²,

Wang³

et al. 2018

Metals

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Abstract:The tribological behavior of the rheoformed and thixoformed nano-sized SiC p /7075 composite parts is investigated. The semisolid stirring temperature has a little influence on the friction coefficient and wear resistance of the rheoformed composite parts. As for the thixoformed composite parts, the average value of the steady-state coefficient of friction increases firstly and then decreases with increasing reheating temperature. Higher wear resistance is achieved at a reheating temperature of 580 • C. The average value of the steady-state friction coefficient of the rheoformed composite parts varies from 0.37 to 0.45 upon applied loads of from 20 to 50 N. Weight loss increases slightly upon an increase of applied load from 20 to 40 N. An applied load of 50 N leads to a significant increase of the weight loss. The wear rate decreases firstly and then increases with increasing applied load. As for the thixoformed composite part, the average value of the steady-state friction coefficient and the weight loss decreased with an increasing applied load. However, the wear rate decreases firstly with increasing applied load and then increases. As for the rheoformed composite part, the average value of the steady-state friction coefficient decreases firstly and then increases a little with increasing sliding velocity. Weight loss and wear rate show a first increase and a followed decrease with increasing sliding velocity. As for the thixoformed composite part, the average value of the steady-state friction coefficient shows a decrease with increasing sliding velocity. Weight loss and wear rate exhibit, at first, an increase, and then a decrease with increasing sliding velocity. The average friction coefficient varies from 0.4 to 0.44 with increasing volume fraction of SiC. Weight loss and wear rate decrease with increasing volume fraction of SiC. An increase in dislocation density around the nano-sized SiC particles and the mismatch of the coefficient of thermal expansion (CTE) between 7075 matrix and nano-sized SiC particles during solidification improve the wear resistance of the composite. The dominant wear mechanisms of the rheoformed and thixoformed composite parts are adhesive wear, abrasive wear and delamination wear.

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“…[1][2][3] And yet, the composites relate to hitting a wall at the applications since built of thermal stresses at the interface between larger particles and matrix can prematurely lead to de-bonding of the particle interface, 4,5 which indicates that the improvement in the mechanical properties of composites is limited. Again, the ductility of the composites deteriorates significantly with the high particle concentration.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of nanosized Al₂O₃ reinforced aluminum matrix composites by subtype multifrequency ultrasonic vibration

Chen

Yan

2015

J. Mater. Res.

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O 3np ) reinforced Al7075 composites were fabricated by specially made Al 2 O 3np containing Mg powder and subtype multifrequency ultrasonic vibration. Compared to traditional techniques, Al 2 O 3np was effectively dispersed in the matrix by the novel method. Microstructural studies showed that the addition of Al 2 O 3np caused the grain refinement and that the resultant microstructures of composites depended on the dominant size and degree of Al 2 O 3np clustering. The grain refinement could be mainly attributed to particle pushing mechanisms. Compared to the matrix alloy, the ultimate tensile and compressive strength of the as-cast composite with 1.5 wt% Al 2 O 3np fabricated at 800°C were increased by 59.6% and 42.6%, respectively. Transmission electron microscope analysis showed that high density dislocations and clear interfaces between particles and matrix were present in the grains, suggesting that the superior improvement of mechanical properties can be attributed to dislocation-type strengthening of matrix alloy and load transfer from matrix to hard nanoparticles.

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Wear of semi-solid rheocast SiCp/Al metal matrix composites

Cited by 30 publications

References 4 publications

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

Tribological Behavior of Nano-Sized SiCp/7075 Composite Parts Formed by Semisolid Processing

Fabrication of nanosized Al₂O₃ reinforced aluminum matrix composites by subtype multifrequency ultrasonic vibration

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Wear of semi-solid rheocast SiCp/Al metal matrix composites

Cited by 30 publications

References 4 publications

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

A Critical Review on Synthesis of Aluminum Metallic Composites through Stir Casting: Challenges and Opportunities

Tribological Behavior of Nano-Sized SiCp/7075 Composite Parts Formed by Semisolid Processing

Fabrication of nanosized Al2O3 reinforced aluminum matrix composites by subtype multifrequency ultrasonic vibration

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Fabrication of nanosized Al₂O₃ reinforced aluminum matrix composites by subtype multifrequency ultrasonic vibration