Synthesis of Al/TiC–Al2O3 nanocomposite by mechanical alloying and subsequent heat treatment

Mehrizi, M. Zarezadeh; Beygi, R.; Eisaabadi, Gh.

doi:10.1016/j.ceramint.2016.02.144

Cited by 46 publications

(9 citation statements)

References 17 publications

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“…This may be attributed to the strong collision of the mixed powders with the balls and walls of the container during the milling process. Thus, the particle size is decreased with a longer [28]. From Fig.…”

Section: Xrd Al-tic Composite Powders After Mtmentioning

confidence: 78%

Morphology and Mechanical Properties of Al- TiC Nanocomposite Processed via Ball Milling Technique

El-Nikhaily

Ellatif

Elkady³

2021

International Journal of Materials Technology and Innovation

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Al-TiC nanocomposites are prepared by powder metallurgy technique. The effect of milling time and TiC percent on the mechanical properties and microstructure are studied. Nano TiC powders with 5, 10, and 20 wt. % is added to the Al matrix. The mixed powders are mechanically milled by a 35:1 ball to powder ratio and 110 rpm for 6, 12, 24, and 48 hr. milling time (MT). Mixed powders are compacted by a uniaxial press under 600 Mpa and sintered at 600 °C for 1 hr. in a vacuum furnace. According to Archimedes' principle, the density was estimated, which indicated it is decreasing for 6 hr. milling time, followed by an increase for 12 and 24 hrs., then another decreasing for 48 hrs. The addition of nano TiC increases the density values gradually by increasing its percent. Both the phase composition and microstructure of both composite powders and sintered samples are examined using XRD & FE-SEM, respectively. XRD results indicated forming the aluminum carbide (Al4C3) phase that is formed during the sintering process. The microstructure shows the homogeneous distribution of TiC on the Al matrix and the reduction of Al particle size by increasing both milling time and TiC percent. Hardness, compression strength, and wear resistance are improved by increasing TiC content and MT up to 24 hours. Al-20 wt. % TiC composite with 24 hr. milling time exhibited the highest hardness (196.5667 HV) and the lowest wear rate (0.001 g/min).

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Section: Xrd Al-tic Composite Powders After Mtmentioning

confidence: 78%

Morphology and Mechanical Properties of Al- TiC Nanocomposite Processed via Ball Milling Technique

El-Nikhaily

Ellatif

Elkady³

2021

International Journal of Materials Technology and Innovation

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“…Spark plasma sintering (SPS) is an advanced compaction technique, which tightens the loosen powder particles by applying pulsed current with high pressure. In SPS, the IMC formation can be restricted, and ductility can be preserved as much as in the parent matrix material [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Strengthening Effect of Reinforcing Spark Plasma Sintered Al-Zn-TiC Nanocomposites with TiC Nanoparticles

2021

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In this investigation, Al-10Zn-TiC nanocomposite powders were prepared by varying the reinforcement content in wt.% via mechanical alloying in order to fabricate bulk samples via spark plasma sintering technique. The grain size exhibited in bulk samples was 17 ± 08 μm in 10 wt% TiC reinforced nanocomposites. The introduced TiC nanoparticles were improved the load carrying ability of the final product. The advanced microscopic studies such as X-ray diffraction analysis, SEM, HR-TEM along with the ring pattern were analysed to ensure the phases and their distribution of reinforced nanoparticles in the Al matrix. The XRD results revealed the formation of TiC present in the matrix, and SEM analysis conveys the uniform distribution and absence of clustering among the reinforcement particles; TEM results depicted the clear interface between the matrix and TiC nanoparticles. The mechanical properties such as hardness and compression studies were carried out in the bulk specimens. The obtained results confirmed the nanocomposites exhibit higher strength which was not only due to decrease in grain size but also due to the occurrence of different strengthening mechanisms such as grain boundary, Orowan and thermal expansion coefficient mismatch strengthening commensurate with the nanoscale TiC addition.

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“…Therefore, ceramic reinforced Al matrix composite is treated as one of the most promising candidate materials in aviation, aerospace, weapons, vehicles, ships and other fields of engineering components. However, the addition of common ceramic reinforcements such as TiC, TiB 2 , Al 2 O 3 , SiC and B 4 C [7,8,9,10] increases the specific strength and specific modulus, and decreases ductility and tenacity of Al matrix composite, reducing the impact resistance and enlarging the possibility of brittle rupture. The shortcomings of the ceramic reinforced Al matrix composite greatly limit its application in working conditions of high impact, stress and pressure [11,12].…”

Section: Introductionmentioning

confidence: 99%

Study on the Impact Resistance of Bionic Layered Composite of TiC-TiB2/Al from Al-Ti-B4C System

et al. 2016

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Mechanical property and impact resistance mechanism of bionic layered composite was investigated. Due to light weight and high strength property, white clam shell was chosen as bionic model for design of bionic layered composite. The intercoupling model between hard layer and soft layer was identical to the layered microstructure and hardness tendency of the white clam shell, which connected the bionic design and fabrication. TiC-TiB2 reinforced Al matrix composites fabricated from Al-Ti-B4C system with 40 wt. %, 50 wt. % and 30 wt. % Al contents were treated as an outer layer, middle layer and inner layer in hard layers. Pure Al matrix was regarded as a soft layer. Compared with traditional homogenous Al-Ti-B4C composite, bionic layered composite exhibited high mechanical properties including flexural strength, fracture toughness, compressive strength and impact toughness. The intercoupling effect of layered structure and combination model of hard and soft played a key role in high impact resistance of the bionic layered composite, proving the feasibility and practicability of the bionic model of a white clam shell.

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Synthesis of Al/TiC–Al2O3 nanocomposite by mechanical alloying and subsequent heat treatment

Cited by 46 publications

References 17 publications

Morphology and Mechanical Properties of Al- TiC Nanocomposite Processed via Ball Milling Technique

Morphology and Mechanical Properties of Al- TiC Nanocomposite Processed via Ball Milling Technique

Synergistic Strengthening Effect of Reinforcing Spark Plasma Sintered Al-Zn-TiC Nanocomposites with TiC Nanoparticles

Study on the Impact Resistance of Bionic Layered Composite of TiC-TiB2/Al from Al-Ti-B4C System

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