Influence of Graphite Morphology on Hyperthermal Friction and Wear Behaviors of Aluminum-high Silicon Alloys

Feng, Cong; Wang, Yaping; Wang, Zhe

doi:10.1007/s12633-021-01524-3

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…Comparison of a) average COF value and b) specific wear rate of [Sn 5 ×Si‐rich]⊚Al–matrix composites with other Al–matrix composites. [ 10,36,42,66–88 ] …”

Section: Resultsmentioning

confidence: 99%

Electromagnetic Preparation and Wear Behavior of In Situ Si‐Reinforced Al–Matrix Gradient Self‐Lubricating Composites

Dong,

Zou,

Kong

et al. 2023

Adv Eng Mater

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In this work, a novel Sn self‐lubricating Al matrix composites with in‐situ Si reinforced gradient structure ([Sn×Si‐rich]◎Al‐matrix composites) is proposed. [Sn×Si‐rich]◎Al‐matrix composites is successfully prepared by controlling synergistic separation of primary Si and Sn under rotating magnetic field. The results show the wear‐resistant structure of “soft Sn surrounding hard Si” persists in [Sn5×Si‐rich] layer. [Sn5×Si‐rich]◎Al‐matrix composites with 5 wt.% Sn addition is advised to balance self‐lubrication of Sn with its negative effects on hardness and tensile strength. The Vickers hardness of [Sn×Si‐rich] layer/Al‐matrix for [Sn5×Si‐rich]◎Al‐matrix composites reaches 1062 HV/120 HV, successfully achieving gradient design of mechanical properties. Meanwhile, tensile strength and average coefficient of friction (COF) value/wear rate are 263 MPa, 0.43/3.81×10‐4 mm3/(N·m), respectively. Furthermore, the average COF and wear rate of [Sn5×Si‐rich]◎Al‐matrix composites increase firstly, then decrease slightly, and finally increase, with increasing wear temperatures. And the lower COF/wear rate of 0.52/5.41×10‐4 mm3/(N·m) occurs at 300 °C as a turning point, because the soft Sn melts into liquid phase and can better spread over wear surface to form a self‐lubricating film to reduce wear. This study can accelerate the development and application of Sn self‐lubricating Al‐matrix composites in high‐temperature industrial systems for automotive lightweight and aerospace.This article is protected by copyright. All rights reserved.

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“…Comparison of a) average COF value and b) specific wear rate of [Sn 5 ×Si‐rich]⊚Al–matrix composites with other Al–matrix composites. [ 10,36,42,66–88 ] …”

Section: Resultsmentioning

confidence: 99%

Electromagnetic Preparation and Wear Behavior of In Situ Si‐Reinforced Al–Matrix Gradient Self‐Lubricating Composites

Dong,

Zou,

Kong

et al. 2023

Adv Eng Mater

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“…Feng, Wang and Wang [8], analysed the influence of graphite morphology on hyperthermal friction and wear behaviours of aluminium alloys with high silicon content. The volumetric wear loss results denote that (Al-27Si)-5FG (fake graphite) composites possess the superior wear resistance with respect to the Al-27Si and (Al-27Si)-5PG (particle graphite) composites for all the test temperatures.…”

Section: Materials and Manufacturingmentioning

confidence: 99%

Comparative Analysis of Hybrid Composites Based on A356 and ZA-27 Alloys regarding Their Tribological Behaviour

Stojаnović¹,

Gajević²,

Miloradović³

et al. 2023

Communications

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The comparative analysis of the two hybrid composites, obtained by the compocasting process, based on A356 and ZA-27 alloys and reinforced with 10 wt. % SiC and 0, 1 and 3 wt. % graphite (Gr) is presented. Optimisation of their tribological behaviour was performed by the Taguchi method and the artificial neural network (ANN). Tribological tests were performed on a block-on-disk tribometer, at three sliding speeds, three normal loads and a sliding distance of 600 m, without lubrication. Results obtained by the ANOVA showed that the hybrid composites based on A356 alloy have the better wear resistance and that the composite reinforced with 10 wt. % SiC and 1 wt. % Gr has the lowest wear rate. The lowest coefficient of friction was obtained for a composite based on ZA-27 alloy reinforced with 10 wt. % SiC, at a normal load of 10 N and sliding speed of 1 m/s.

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Squeeze infiltration processing of lightweight smart aluminum graphite functionally graded composite for enhanced wear resistance

Akhil,

Manoj,

Suja

et al. 2023

Journal of Manufacturing Processes

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Influence of Graphite Morphology on Hyperthermal Friction and Wear Behaviors of Aluminum-high Silicon Alloys

Cited by 3 publications

References 31 publications

Electromagnetic Preparation and Wear Behavior of In Situ Si‐Reinforced Al–Matrix Gradient Self‐Lubricating Composites

Electromagnetic Preparation and Wear Behavior of In Situ Si‐Reinforced Al–Matrix Gradient Self‐Lubricating Composites

Comparative Analysis of Hybrid Composites Based on A356 and ZA-27 Alloys regarding Their Tribological Behaviour

Squeeze infiltration processing of lightweight smart aluminum graphite functionally graded composite for enhanced wear resistance

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