Functional Metal Matrix Composites: Self-lubricating, Self-healing, and Nanocomposites-An Outlook

Moghadam, Afsaneh Dorri; Schultz, Benjamin F.; Ferguson, J. B.; Omrani, Emad; Rohatgi, Pradeep K.; Gupta, Nïkhil

doi:10.1007/s11837-014-0948-5

Cited by 171 publications

(107 citation statements)

References 41 publications

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“…First, the addition of Gr particles leads to decreased hardness, fracture toughness, and ductility of the hybrid composites [53,54]. Moreover, it may lead to an increase in void formation and crack propagation under sliding load because of particle agglomeration and weak Al/Gr and SiC/Gr bonding [62,63]. These effects decrease the wear resistance of the resultant Al composites.…”

Section: Wear Ratementioning

confidence: 99%

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Singh

2016

Friction

114

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Improvement in surface properties and retainment of bulk properties are essential requirements for the design of components for wear resistance applications. This paper summarizes various features of Al/SiC/Gr hybrid composites that can be employed in different tribological applications. The study has revealed that the processing route plays a significant role in obtaining a homogeneous structure of these composites. In powder metallurgy, the selection of sizes of the matrix and reinforcement powders is crucial, whereas the wettability between the reinforcement particles and molten alloy is a major challenge in liquid metallurgy. The incorporation of SiC particles increases the mechanical strength and wear performance of Al composites. However, ejection of these particles can reduce the wear performance of Al composites under severe conditions. The addition of Gr particles helps in the formation of a thick and extensive tribolayer on the wear surface. This layer reduces direct contact between the rubbing surfaces, thereby decreasing the wear rate under certain conditions. Morphological analysis of worn surfaces has confirmed that the hybrid composites exhibit superior wear properties than the pure Al alloy and the ceramic-reinforced composite. However, increase in the Gr content beyond a limiting value can deteriorate the tribological properties of these composites. Therefore, true optimization of a tribosystem (of the hybrid composite and counterface) can be achieved by selecting appropriate reinforcement contents.

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Section: Wear Ratementioning

confidence: 99%

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Singh

2016

Friction

114

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“…However, achieving similar capabilities in metallic materials is much more complex. The article by Dorri et al 2 titled ''Functional Metal Matrix Composites: Self-Lubricating, Self-Healing, and Nanocomposites-An Outlook'' discusses the current status and future perspective in multifunctional metallic materials. Self-lubrication through either solid-or liquid-phase lubricant that is released from the material microstructure can be useful.…”

Section: Multifunctional Materialsmentioning

confidence: 99%

Metal- and Polymer-Matrix Composites: Functional Lightweight Materials for High-Performance Structures

Gupta

Paramsothy

2014

JOM

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The special topic ''Metal-and Polymer-Matrix Composites'' is intended to capture the state of the art in the research and practice of functional composites. The current set of articles related to metal-matrix composites includes reviews on functionalities such as self-healing, self-lubricating, and selfcleaning capabilities; research results on a variety of aluminum-matrix composites; and investigations on advanced composites manufacturing methods. In addition, the processing and properties of carbon nanotube-reinforced polymer-matrix composites and adhesive bonding of laminated composites are discussed. The literature on functional metal-matrix composites is relatively scarce compared to functional polymer-matrix composites. The demand for lightweight composites in the transportation sector is fueling the rapid development in this field, which is captured in the current set of articles. The possibility of simultaneously tailoring several desired properties is attractive but very challenging, and it requires significant advancements in the science and technology of composite materials. The progress captured in the current set of articles shows promise for developing materials that seem capable of moving this field from laboratory-scale prototypes to actual industrial applications. COMPOSITE MATERIALSIncreasing interest in lightweight and highperformance materials is leading to significant research activity in the area of composite materials. One recent focus area is to develop multifunctional composites that have more than one property tailored as per the design requirements in addition to achieving low density. Automotive, aeronautics, and wind-energy sectors have been the major users of composite materials. The transportation sector is especially interested in such materials for structural applications due to steadily rising energy costs and a desire to reduce emissions. This interest in metaland polymer-matrix composites for structural applications inspired the Metal and Polymer-matrix Composites symposium that was organized as a part of Materials Science and Technology 2013

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“…Li et al [4] found that adding graphite particles to the nickel matrix showed a significant reduction in the friction and wear when compared to pure nickel. Especially, the self-lubricating iron matrix composites usually processed by the powder metallurgy technology play an important role in the industrial applications because of the high utilization rate, excellent tribological performance and numerous sources [5,6]. Depending on the desired friction and wear properties, different reinforcements are used in iron matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Effects of Deep Cryogenic Treatment on the Microstructures and Tribological Properties of Iron Matrix Self-Lubricating Composites

Peng

Zhang

Chen

et al. 2018

Metals

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Abstract:The effects of deep cryogenic treatment on the microstructures and tribological properties of the self-lubricating iron matrix composites are investigated. The self-lubricating composites are deeply cryogenically treated at about −196 • C. The results show that with deep cryogenic treatment, the martensite phase transformation occurred from phase γ to α , and the fine particle carbides precipitated between martensites with the extension of cryogenic treatment time, measured by X-ray diffractometry (XRD) and scanning electron microscope (SEM). Compared with the as-sintered specimen, the maximum hardness of the specimens processed by cryogenic treatment increases by 172.8% from 253.2 HV to 690.7 HV. The materials with deep cryogenic treatment for 8 h show the best tribological properties, i.e., the average friction coefficient decreases by 75% from 0.36 to 0.09, and the wear coefficient decreases by 63% from 341 to 126 × 10 −6 mm 3 /Nm at 150 N and 8 mm/s. The improvement of the tribological property can be primarily attributed to the martensite phase transformation from γ to α and the precipitation of fine particles carbides between the martensites, which increase the hardness and the wear resistance after the cryogenic treatment.

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Functional Metal Matrix Composites: Self-lubricating, Self-healing, and Nanocomposites-An Outlook

Cited by 171 publications

References 41 publications

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Fabrication characteristics and tribological behavior of Al/SiC/Gr hybrid aluminum matrix composites: A review

Metal- and Polymer-Matrix Composites: Functional Lightweight Materials for High-Performance Structures

Effects of Deep Cryogenic Treatment on the Microstructures and Tribological Properties of Iron Matrix Self-Lubricating Composites

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