Effect of SiC volume fraction and size on dry sliding wear of Fe/SiC/graphite hybrid composites for high sliding speed applications

Prabhu, T. Ram; Varma, V.K.; Vedantam, Srikanth

doi:10.1016/j.wear.2013.10.006

Cited by 65 publications

(33 citation statements)

References 30 publications

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“…% of B 4 C content is shown in figure 3. The improvement in the wear resistance of the composites with B 4 C reinforcement can be attributed to the improvement in the hardness of the composites and improved hardness results in the decrease in the wear loss of the composites [8]. Figure 4 shows the variation of wear loss of Al-4.5% Cu matrix alloy and Al-4.5%Cu-2% & 4% B 4 C composites at constant 1.5kg load and varying sliding speeds.…”

Section: Effect Load On Wearmentioning

confidence: 99%

Microstructure and Wear Behavior of B4C Particulates Reinforced Al-4.5%Cu Alloy Composites

Bujari¹,

Kurahatti²

2017

IOSR JMCE

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Section: Effect Load On Wearmentioning

confidence: 99%

Microstructure and Wear Behavior of B4C Particulates Reinforced Al-4.5%Cu Alloy Composites

Bujari¹,

Kurahatti²

2017

IOSR JMCE

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“…The highly and less densified composites from each group were only selected to evaluate the braking performance of the composites due to the infrastructure limitation and the high cost of testing. The schematic and operating principle of the dynamometer, and the sample preparation techniques for the brake test are established in our earlier work ( Ref 26,27). The sample was an oval-shaped pad with the swept radius, thickness, and surface area of 51.5, 6, and 3078 mm 2 , respectively.…”

Section: Testingmentioning

confidence: 99%

Effect of Compaction Load and Sintering Temperature on Tribological and Mechanical Behavior of Ni/SiC/MoS2 Composites

Prabhu

2016

J. of Materi Eng and Perform

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In the present investigation, the effects of compaction load and sintering temperature on the tribological and mechanical behavior of Ni/20%SiC/7%MoS 2 hybrid composites was studied. The density, compression strength, and hardness of the composites were evaluated and compared. The wear properties of the composites were evaluated for the test condition of 1 m/s speed and 10 N load using a pin-on-disk tribometer. The braking performance of the composites was evaluated in a subscale dynamometer for the 500 kJ energy condition. The microstructure and wear surface morphology of the composites were analyzed by stereo, optical, and scanning electron microscopes. From the results, the following important conclusions are drawn: (1) the compaction load of 1400 kN and sintering temperature of 900°C are optimum to obtain the best combination of tribological and mechanical properties; (2) the properties such as density, compression strength, hardness, wear, and friction increase up to a critical sintering temperature, and then decrease later; (3) the composition and thickness of the interface reaction product phases (Ni 2 Si, Ni 3 Si, and graphite) play a key role in deciding the strength of Ni/SiC interface that consequently affects the mechanical and tribological properties of the composites; (4) the abrasive wear is found to be the main wear mechanism in the highly densified composites, whereas the delamination wear and the thirdbody wear are major wear mechanisms in the poorly densified composites; and (5) the better braking performance of the highly densified composites is attributed to the absence of third-body wear, controlled flow of solid lubricant, and lower porosity.

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“…Recently, it was shown that adding the solid lubricant MoS 2 to the iron matrix can make the friction coefficient of composites lower. Whereas, the weak mechanical strength of MoS 2 can result in the deterioration of the load bearing capacity of the iron matrix composites under heavy load [7,8], which has attracted some studies to improve this phenomenon. For example, the addition of ceramic particles into the iron matrix can enhance the anti-wear property of the materials.…”

Section: Introductionmentioning

confidence: 99%

“…Han et al [9] showed that the introduction of CaF 2 into Fe-Mo alloys improved the mechanical properties and obtained better tribological properties at both room and high temperature. Prabhu [8] investigated the friction and wear properties of Fe/SiC/graphite hybrid composite and found that SiC ceramic can strengthen the wear resistance of composites. The WCp particle can reinforce the abrasive wear resistance of ferrous matrix composites [10].…”

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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Effect of SiC volume fraction and size on dry sliding wear of Fe/SiC/graphite hybrid composites for high sliding speed applications

Cited by 65 publications

References 30 publications

Microstructure and Wear Behavior of B4C Particulates Reinforced Al-4.5%Cu Alloy Composites

Microstructure and Wear Behavior of B4C Particulates Reinforced Al-4.5%Cu Alloy Composites

Effect of Compaction Load and Sintering Temperature on Tribological and Mechanical Behavior of Ni/SiC/MoS2 Composites

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

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