Synergistic strengthening of aluminum matrix composites reinforced by SiC nanoparticles and carbon fibers

Sha, Jianjun; Lv, Zhaozhao; Guo, Lin; Dai, Jixiang; Zu, Yufei; Xian, Yajiang; Zhang, W.; Cui, Ding; Yan, Conglin

doi:10.1016/j.matlet.2019.127024

Cited by 19 publications

(5 citation statements)

References 15 publications

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“…The interaction betw reinforcing particles and deflections is enhanced, leading to an overall enhance the strength of the MMCs [38]. The addition of ceramic nanoparticulates smaller nm has been shown to significantly enhance the composite's strength while mai its ductility, as revealed by research [39,40]. The addition of sufficiently tiny grai inforcement effectively fixes the grain borders inside the matrix, leading to a more grain structure [41] and heightened limitations on the movement of grain bounda The enhanced durability of the composites may be credited to their smaller grain s and restricted dislocation movement.…”

Section: Strengthening Mechanismsmentioning

confidence: 97%

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

Maddaiah,

Kumar,

Pramod

2024

J. Compos. Sci.

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Stir-casting with ultrasonic cavitation produced nano-Al2O3-filled AA7150 matrix composites in this study. The SEM microstructure study shows that all composites include nano-Al2O3 particles with consistent particle sizes and homogenous distribution. EDS and XRD showed no secondary phases or impurities in the composite. Optical microscopy showed intense ultrasonic cavitation effects, and nano-Al2O3 particles caused grain refinement in the AA7150 matrix. The composite’s mechanical characteristics improved when the Al2O3 nanoparticle weight percentage (wt.%) increased. With only 2.0 wt.% nano-Al2O3 particles, the composites yielded 232 MPa, 97.52% higher than the sonicated AA7150 matrix alloy. Multiple models were used to characterize the strength of the AA7150 nano-Al2O3 composite. The findings showed that thermal incongruity, Orowan strengthening, the Hall–Petch mechanism, and load transfer effects contributed the most towards the increased strength of the composite. Increasing the nano-Al2O3 wt.% in the AA7150 matrix improved hardness by 95.08%, yield strength by 90.34%, and sliding wear resistance by 46.52%. This enhancement may be attributed to the combined effects of better grain refinement, enhanced dispersion with dislocation strengthening, and better load transfer between the matrix and reinforcement, which are assisted by the inclusion of reinforcements. This result was confirmed by optical studies.

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Section: Strengthening Mechanismsmentioning

confidence: 97%

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

Maddaiah,

Kumar,

Pramod

2024

J. Compos. Sci.

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“…Moreover, Vickers microhardness and tensile Strength were improved by 88 % and 71 % respectively. Hence, the effect in strengthening these hybrid materials was revealed in these research works [21][22][23][24].…”

Section: Introductionmentioning

confidence: 93%

Effect of carbide ceramics and coke on the properties of dispersion strengthened aluminium‐silicon7‐magnesium hybrid composites

Dhas

Raja

Jannet

et al. 2023

Materialwissenschaft Werkst

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In this study, aluminium‐silicon7‐magnesium alloy was reinforced with carbide ceramics (silicon carbide and boron carbide) and coke microparticles. The composite samples (S1, S2, and S3) with 4 %, 8 %, and 12 % by weight of silicon carbide and boron carbide microparticles and 8 % by weight of coke micro particles respectively, were prepared through the ultrasonic assisted melt‐stir casting route. It was observed from the literature that only a few research works reported the cumulative effect of adding these micro‐particulate reinforcements within aluminium‐silicon7‐magnesium alloy. The microstructural evaluation revealed uniform dispersion of particulate reinforcements. Area energy dispersive x‐ray spectroscopy scan results proved the presence of the reinforcement particles as heterogeneous phases at distinct zones. The samples undergone tensile tests failed under the brittle fracture mode. The ultimate tensile strength of the composites improved by about 27.4 %, the % elongation improved by about 6.8 %, and Vickers microhardness dropped 1.9 % to the maximum. Dimples were observed in the fracture morphology analysis and it was mainly due to the mixed ductility of the sample S2. An abrasive wear mechanism was observed in the worn‐out sample S2. The wear rate decreased significantly with an increase in weight fraction of the reinforcements.

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“…A good strength and ductility of AlSi around carbon can be inferred, since the alloy layer can be regarded as ceramic nano-particles reinforced metal matrix composite. 34 Through linear EDS analysis, the difference of element distribution at the interface of carbon and AlSi was ascertained. The width of transition zone was about 3-4 lm.…”

Section: Microstructure Of the C/c-zrb 2 -Alsi Compositesmentioning

confidence: 99%

Effect of preset interfacial ZrB₂ particles on the microstructure and properties of C/C-AlSi composites

Feng

Tang

Liu

et al. 2021

Journal of Composite Materials

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ZrB2 particles were preset to the C-AlSi interface to improve oxidation resistance of C/C preform and adjust the microstructure of the interpenetrated C/C-AlSi composite prepared through pressure infiltration of eutectic AlSi into a fiber fabric based porous C/C skeleton. Micro-morphology investigations suggested that the AlSi textures were changed from dendritic to petals-like state, and the nano to micro-scale ZrB2 particles were dispersed into AlSi and affected the distribution of Al and Si nearby carbon. Tests demonstrated that C/C-AlSi have slight lower density and thermal expansion coefficient, and higher original compressive strength, while C/C-ZrB2-AlSi composites presented an outstanding strength retention rate after thermal shock. Fracture and micro-morphology indicated that the influence of the preset ZrB2 to the interface of carbon and alloy greatly affected the generation and propagation of cracks, which determined the diverse compression behaviors of the composites before and after thermal shock.

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Synergistic strengthening of aluminum matrix composites reinforced by SiC nanoparticles and carbon fibers

Cited by 19 publications

References 15 publications

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

Effect of carbide ceramics and coke on the properties of dispersion strengthened aluminium‐silicon7‐magnesium hybrid composites

Effect of preset interfacial ZrB₂ particles on the microstructure and properties of C/C-AlSi composites

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Synergistic strengthening of aluminum matrix composites reinforced by SiC nanoparticles and carbon fibers

Cited by 19 publications

References 15 publications

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

Studies on the Mechanical, Strengthening Mechanisms and Tribological Characteristics of AA7150-Al2O3 Nano-Metal Matrix Composites

Effect of carbide ceramics and coke on the properties of dispersion strengthened aluminium‐silicon7‐magnesium hybrid composites

Effect of preset interfacial ZrB2 particles on the microstructure and properties of C/C-AlSi composites

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Effect of preset interfacial ZrB₂ particles on the microstructure and properties of C/C-AlSi composites