Length effect of carbon nanotubes on the strengthening mechanisms in metal matrix composites

Chen, Biao; Shen, Jianghua; Ye, X.; Jia, Lei; Li, Shunfeng; Umeda, Junko; Takahashi, Makoto; Kondoh, Katsuyoshi

doi:10.1016/j.actamat.2017.08.048

Cited by 388 publications

(101 citation statements)

References 54 publications

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“…According to Refs. [33,36], the effect of load transfer is much lower than that of Orowan strengthening for the aspect ratio smaller than 10 (in our case~5) so that this factor was also not taken into account.…”

Section: Discussionmentioning

confidence: 73%

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Zherebtsov

Ozerov

Stepanov

et al. 2017

Metals

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Effect of high-pressure torsion (HPT) at 400 • C on microstructure and microhardness of a Ti/TiB metal-matrix composite was studied. The starting material was produced by spark plasma sintering of a mixture of a pure Ti and TiB 2 (10 wt %) powders at 1000 • C. The microstructure evolution during HPT was associated with an increase in dislocation density and substructure development that resulted in a gradual microstructure refinement of the Ti matrix and shortening/redistribution of TiB whiskers. After five revolutions, a nanostructure with (sub) grain size of~30 nm was produced in Ti matrix. The microhardness increased with strain attaining the value~520 HV after five revolutions. The contribution of different hardening mechanisms into the hardness of the Ti/TiB metal-matrix composite was quantitatively analyzed.

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Section: Discussionmentioning

confidence: 73%

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Zherebtsov

Ozerov

Stepanov

et al. 2017

Metals

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“…Chen et al [5] used the combinations of Al-CNTs powder combined thru using excessive power ball milling (HEBM), solution ball milling (SBM), mechanical coating (MC). The combination were then consolidated with the useful resource of spark plasma sintering (SPS) approach and then heat-extruded.…”

Section: Carbon Nanotubes Strengthened Composites and Resultsmentioning

confidence: 99%

Aluminum Nanocomposites Reinforced with Carbon Nanotubes – A Research

2019

IJRTE

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This paper basically surveys the continuing development in metal framework composites bolstered with carbon nanotubes (CNTs). Aluminum metal framework composites fortified with CNTs have become extra significance because of their low thickness, remarkable mechanical and tribological homes. CNT bolstered Al steel lattice composites commonly preferred composites in easy applications. it's miles clean from the writing that no matter the truth that extra extension for the nanocomposites exists however troubles in handling upsets the improvement in Al/CNT composites. This audit paper illuminates part of the handling strategies with the purpose that future investigates might also moreover spark off first rate results inside the manufacture of awesome composite materials.

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“…(2) The dislocations may be generated due to the mismatch of elastic modulus and thermal expansion coefficient between the matrix and the nano-reinforcement [35]. During hot deformation process, the dislocations may concentrate around SiCp and CNT, which lead the generation of stress centration at the interface between reinforcements and matrix [11,35]. As the stress become larger than interface bonding strength, microcracks might occur at the interface between SiCp-Mg or CNT-Mg, which can be illustrated in Figure 8b.…”

Section: Influence Of Hot Deformation Conditions On Activation Energymentioning

confidence: 99%

Hot Compression Deformation and Activation Energy of Nanohybrid-Reinforced AZ80 Magnesium Matrix Composite

Fan

Zhou

et al. 2020

Metals

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The hot deformation test of the nano silicon carbide (nano-SiC) and carbon nano tubes (CNT) hybrid-reinforced AZ80 matrix composite was performed at compression temperatures of 300–450 °C and strain rates of 0.0001–1 s−1. It could be observed that the flow stress of the nanocomposite rose with the reduction of deformation temperature and the increase of strain rate. The hot deformation behaviors of the composite could be described by the sine-hyperbolic Arrhenius equation, and deformation activation energy (Q) was calculated to be 157.8 kJ/mol. The Q values of the extruded nanohybrid/AZ80 composite in this study and other similar studies on extruded AZ80 alloys were compared in order to analyze the effect of the addition of reinforcement, and the effects of deformation conditions on activation energy were analyzed. Finally, the compression microstructure in an unstable condition was carefully analyzed, and results indicated that the phenomenon of local instability was easy to occur at the compression specimen of the nanohybrid/AZ80 composite under deformation conditions of low temperature with high strain rate (300 °C, 0.1–0.01 s−1), and high temperature with low strain rate (450 °C, 0.0001 s−1).

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Length effect of carbon nanotubes on the strengthening mechanisms in metal matrix composites

Cited by 388 publications

References 54 publications

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Effect of High-Pressure Torsion on Structure and Microhardness of Ti/TiB Metal–Matrix Composite

Aluminum Nanocomposites Reinforced with Carbon Nanotubes – A Research

Hot Compression Deformation and Activation Energy of Nanohybrid-Reinforced AZ80 Magnesium Matrix Composite

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