Exploring the reinforcing effect of TiC and CNT in dual-reinforced Al-matrix composites

Saba, Farhad; Sajjadi, Seyed Abdolkarim; Haddad-Sabzevar, M.; Zhang, Faming

doi:10.1016/j.diamond.2018.09.007

Cited by 29 publications

(6 citation statements)

References 61 publications

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“…In the case of Orowan strengthening, the reinforcements were considered extremely small and had a grain distribution of uniform size and dimension. CNTs and TiB 2 microparticles may contribute to the dual-reinforced composite's mechanical strength [46]. As a result, load transfer, grain refinement of TiB 2 microparticles and CNTs, and hybrid reinforcement thermal mismatch all played a role in the impact of hybrid reinforcements on AZ91D matrix composites [47].…”

Section: Resultsmentioning

confidence: 99%

Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

velmurugan

Mohan

2023

Mater. Res. Express

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In the current work, magnesium (AZ91D) matrix composites reinforced with different weight fractions (5, 10, and 15%) of titanium diboride (TiB2) and 1.5 wt.% percent carbon nanotubes (CNTs) are fabricated using stir casting. The improvements in mechanical, wear and corrosion resistance properties are evaluated as per ASTM guidelines. The synergistic strengthening effect of TiB2 and CNT is also studied. It was discovered that the AZ91D/(1.5CNT-10TiB2) composite outperformed other magnesium matrix composites in terms of strength and ductility. Experimental characterization and quantity analysis revealed that the load transfer process of CNT and thermal mismatch, grain refinement are the primary factors leading to the composite's increased tensile strength. Porosity tends to increase as a result of variance in thermal expansion coefficient of particles and matrix material, Orowan strengthening mechanism plays a prominent role towards enhancement of tensile strength. Because of the influence of synergistic strengthening, micro particles TiB2 increased the proportion of load transmission mechanisms and thermal mismatch facilitated the homogenous distribution of CNTs. Wear resistance and corrosion resistance increases with inclusion of CNTs and TiB2 content. Abrasive type wear mechanism is seen from the SEM image and the wear craters are also seen in all the SEM images, adding TiB2 considerably improves the cast composites resistance to corrosion because of grain refinement. Higher addition of TiB2 influences higher pitting corrosion due to poor grain refinement.

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Section: Resultsmentioning

confidence: 99%

Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

velmurugan

Mohan

2023

Mater. Res. Express

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“…Thus, the combination of dual reinforcements such as micro and nano reinforcement particles efficiently strengthened the aluminum composites. Saba et al [18] studied the effect of micro-phased TiC and nano-phased CNT reinforced aluminum composites where it was observed that the tensile strength was considerably enhanced without loss in ductility. Earlier investigations show a very limited number of utilizations of aluminum A383 alloy in composite usage, despite its notable wear and corrosion resistance, exceptional mechanical properties, machinability, and castability.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of B4C and Multi-Walled CNT on Enhancing the Tribological Performance of Aluminum A383 Hybrid Composites

Samal,

Raj,

Meher

et al. 2024

Lubricants

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The requirement for high-performance and energy-saving materials motivated the researchers to develop novel composite materials. This investigation focuses on utilizing aluminum alloy (A383) as the matrix material to produce hybrid metal matrix composites (HMMCs) incorporating boron carbide (B4C) and multi-walled carbon nanotube (MWCNT) through a cost-effective stir casting technique. The synthesis of HMMCs involved varying the weight fractions of B4C (2%, 4%, and 6%) and MWCNT (0.5%, 1%, and 1.5%). The metallographic study was carried out by field emission scanning electron microscopy (FESEM) mapped with EDS analysis. The results indicated a uniform dispersion and robust interfacial interaction between aluminum and the reinforced particles, significantly enhancing the mechanical properties. Micro-hardness and wear characteristics of the fabricated HMMCs were investigated using Vickers microhardness testing and the pin-on-disc tribometer setup. The disc is made of hardened chromium alloy EN 31 steel of hardness 62 HRC. The applied load was varied as 10N, 20N, 30N with a constant sliding speed of 1.5 m/s for different sliding distances. The micro-hardness value of composites reinforced with 1.5 wt% MWCNT and 6 wt% B4C improved by 61% compared to the base alloy. Additionally, the wear resistance of the composite material improved with increasing reinforcement content. Incorporating 1.5% CNT and 6% B4C as reinforcements results in the composite experiencing about a 40% reduction in wear loss compared to the unreinforced aluminum alloy matrix. Furthermore, the volumetric wear loss of the HMMCs was critically analyzed with respect to different applied loads and sliding distances. This research underscores the positive impact of varying the reinforcement content on the mechanical and wear properties of aluminum alloy-based hybrid metal matrix composites.

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“…17 Powder metallurgy, particularly the spark plasma sintering (SPS) process, has been employed several times to produce aluminum matrix hybrid composites. [18][19][20][21] In the SPS process, high-speed heating under uniaxial pressure converts loose powder particles into high-density bulk parts with good mechanical properties. [22][23][24] It has been shown that sintering temperature is among the most important process parameters affecting the structural characteristics and mechanical properties of materials.…”

Section: Introductionmentioning

confidence: 99%

Effect of the spark plasma sintering temperature on the microstructure and mechanical properties of a ceramic/metallic glass reinforced hybrid composite

Rezaei

Albooyeh

Chachei

et al. 2022

Journal of Composite Materials

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In this investigation, hybrid aluminum matrix composites reinforced with Fe-based metallic glass (FMG) and SiC particles were synthesized using spark plasma sintering (SPS) at different sintering temperatures. The effects of sintering temperature on densification, phases, microstructure, and mechanical properties of the composites were evaluated. The findings indicate that the density of the sintered samples improved with increasing the sintering temperature. The X-ray diffraction results showed no remarkable difference in the phases of the samples sintered at different temperatures; only some small structural changes occurred in the metallic glass reinforcements. The sintering temperature had a significant effect on mechanical properties. For example, the hybrid aluminum matrix composite reinforced with 3 vol% FMG and 7 vol% SiC sintered at 550°C exhibited the ultimate compressive strength of 494 MPa, which is about 47% higher than the same composite sintered at 450°C.

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Exploring the reinforcing effect of TiC and CNT in dual-reinforced Al-matrix composites

Cited by 29 publications

References 61 publications

Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

Synergistic Effect of B4C and Multi-Walled CNT on Enhancing the Tribological Performance of Aluminum A383 Hybrid Composites

Effect of the spark plasma sintering temperature on the microstructure and mechanical properties of a ceramic/metallic glass reinforced hybrid composite

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Exploring the reinforcing effect of TiC and CNT in dual-reinforced Al-matrix composites

Cited by 29 publications

References 61 publications

Characterization and strengthening mechanism of CNT/TiB2 particulates added AZ91D composites

Characterization and strengthening mechanism of CNT/TiB2 particulates added AZ91D composites

Synergistic Effect of B4C and Multi-Walled CNT on Enhancing the Tribological Performance of Aluminum A383 Hybrid Composites

Effect of the spark plasma sintering temperature on the microstructure and mechanical properties of a ceramic/metallic glass reinforced hybrid composite

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Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites

Characterization and strengthening mechanism of CNT/TiB₂ particulates added AZ91D composites