Workhardening effects in SiC particle reinforced aluminium alloys

Styles, C. M.; Sinclair, Ian; Foster, K.; Gregson, P.J.

doi:10.1179/026708398790613515

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…In composites, the particles bear higher load than the matrix, which leads to a direct strengthening called the load transfer effect [ 16 ]. In addition, because of the difference on stiffness and thermal expansion of the particle and the matrix, additional residual stress and dislocation occur, which also strengthens the matrix [ 17 , 18 ]. Besides these, the particle itself blocks the dislocation during composite deformation and enhances the strain hardening of the composite [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Particle Size and Matrix Strength on Strengthening and Damage Process of the Particle Reinforced Metal Matrix Composites

et al. 2021

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Roles of the particle, strengthening, and weakening during deformation of the particle reinforced metal matrix composite, were studied using in situ technique. Composites with three different strengths Al-Cu-Mg alloy matrices reinforced by three sizes SiC particles were manufactured and subjected to in situ tensile testing. Based on in situ observation, damage process, fraction and size distribution of the cracked particles were collected to investigate the behavior of the particle during composite deformation. The presence of the particle strengthens the composite, while the particle cracking under high load weakens the composite. This strengthening to weakening transformation is controlled by the damage process of the particle and decided by the particle strength, size distribution, and the matrix flow behavior together. With a proper match of the particle and matrix, an effective strengthening can be obtained. Finally, the effective match range of the particle and the matrix was defined as a function of the particle size and the matrix strength.

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Section: Introductionmentioning

confidence: 99%

Effect of the Particle Size and Matrix Strength on Strengthening and Damage Process of the Particle Reinforced Metal Matrix Composites

et al. 2021

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“…It is seen that composites exhibit higher hardness than alloys in both the cast and aged conditions; the peak hardness attained in the composite is significantly higher than that for the alloy. The increased hardness in the composites is probably due to strain-induced hardness due to the particle reinforcement [6,7,9,28] Addition of dispersoids decreases the UTS of the alloy (Table 2). However, on aging, both the alloy and the composite show significant improvement over the cast composition; the improvement is much more in the case of the composite than of the alloy.…”

Section: Discussionmentioning

confidence: 99%

“…When the particle size is decreased, tensile strength of the composite increases but fracture toughness follows the opposite trend -it increases as the particle size increases. It has been widely reported that artificial aging of composites to T6, T 7 condition has a positive effect on the mechanical properties [9][10][11]. The tensile strength is considerably ($20%) increased as also the fracture toughness.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Assessment of the Behavior of Al-Cu Alloy and Its Composite

Dasgupta

2005

Journal of Composite Materials

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An Al-Cu alloy (corresponding to the 2014 series) is used to make a composite by the addition of 15 wt% SiC dispersoids adopting the liquid metallurgy route by stir casting. The alloy and the composite are subjected to solutionizing and aging to optimize the attainable properties. They are characterized for their physical, microstructural, hardness, tensile, dry sliding, and abrasive wear (under high stress conditions) properties under identical experimental conditions. The obtained results indicate that the formation of the composite does not always improve the properties. A clear distinction can be made between the properties of alloys which can be improved by the formation of a composite. In other cases, the formation of a composite has resulted in deteriorating the properties of the alloy. The present study analyzes the causes for the behavior exhibited by the alloy and the composite and attempts to lay down conditions under which composites can be successfully used over their counterpart alloys and vice versa.

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“…Flaws in matrix composites due to manufacturing variables adversely influences their mechanical characteristics and corrosion susceptibility. Styles et al [36] discovered that SiCp augmented Al alloys exhibits enhanced specific strength as against the monolithic alloys while sustaining good isotropic characteristics. Assessment of miniature fiber, whiskers, or particle augmented alloys was performed to decrease cost of fabrication and producing materials with enhanced mechanical properties [37][38][39].…”

Section: Effect Of Manufacturing Processes On Mechanical Properties O...mentioning

confidence: 99%

Corrosion of Aluminum Metal Matrix Composites: A Review of the Effect of Manufacturing Processes, Processing Routes and Secondary Phases

Loto

Adeleke

2021

MSF

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The vulnerability of Al matrix composites to general and preferential corrosion is due to the intrinsic proneness of binary materials to undergo advanced deterioration. Control of the prevalent sites for evolution and proliferation of confined corrosion strongly influence the corrosion resistance of the composites. The problem for enhanced utilization of composites, has exacerbated with attention on the productive life and resilience to environmental degeneration during operational service. This can be achieved through proper comprehension of the electrochemical mechanism, the intriguing nature of SiC grains and their importance on the secondary phases, metallurgical configuration, and manufacturing process routes. This review confirms the relevance of secondary phases, microstructures and manufacturing processes in relation to SiC particles on the corrosion invulnerability of Al matrix composites to further add corrosion mitigation in design and and technological advancement.

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Workhardening effects in SiC particle reinforced aluminium alloys

Cited by 5 publications

References 5 publications

Effect of the Particle Size and Matrix Strength on Strengthening and Damage Process of the Particle Reinforced Metal Matrix Composites

Effect of the Particle Size and Matrix Strength on Strengthening and Damage Process of the Particle Reinforced Metal Matrix Composites

A Comparative Assessment of the Behavior of Al-Cu Alloy and Its Composite

Corrosion of Aluminum Metal Matrix Composites: A Review of the Effect of Manufacturing Processes, Processing Routes and Secondary Phases

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