Nanoparticles Distribution and Mechanical Properties of Aluminum‐Matrix Nano‐Composites Treated with External Fields

Tamayo-Ariztondo, J.; Madam, S. Vadakke; Djan, E.; Eskin, Dmitry; Babu, N. Hari; Fan, Z.

doi:10.1002/9781118888438.ch236

Light Metals 2014 2014

DOI: 10.1002/9781118888438.ch236

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Nanoparticles Distribution and Mechanical Properties of Aluminum‐Matrix Nano‐Composites Treated with External Fields

J. Tamayo-Ariztondo¹,

S. Vadakke Madam²,

E. Djan³

et al.

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Cited by 3 publications

References 21 publications

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Coupling of Acoustic Cavitation with Dem-Based Particle Solvers for Modeling De-agglomeration of Particle Clusters in Liquid Metals

Manoylov

Lebon

Djambazov

et al. 2017

Metall Mater Trans A

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The aerospace and automotive industries are seeking advanced materials with low weight yet high strength and durability. Aluminum and magnesium-based metal matrix composites with ceramic micro-and nano-reinforcements promise the desirable properties. However, larger surface-area-to-volume ratio in micro-and especially nanoparticles gives rise to van der Waals and adhesion forces that cause the particles to agglomerate in clusters. Such clusters lead to adverse effects on final properties, no longer acting as dislocation anchors but instead becoming defects. Also, agglomeration causes the particle distribution to become uneven, leading to inconsistent properties. To break up clusters, ultrasonic processing may be used via an immersed sonotrode, or alternatively via electromagnetic vibration. This paper combines a fundamental study of acoustic cavitation in liquid aluminum with a study of the interaction forces causing particles to agglomerate, as well as mechanisms of cluster breakup. A non-linear acoustic cavitation model utilizing pressure waves produced by an immersed horn is presented, and then applied to cavitation in liquid aluminum. Physical quantities related to fluid flow and quantities specific to the cavitation solver are passed to a discrete element method particles model. The coupled system is then used for a detailed study of clusters' breakup by cavitation.

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Coupling of Acoustic Cavitation with Dem-Based Particle Solvers for Modeling De-agglomeration of Particle Clusters in Liquid Metals

Manoylov

Lebon

Djambazov

et al. 2017

Metall Mater Trans A

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Development of Al7075 Reinforced with Multiwalled Carbon Nanotubes for Strength Evaluation and FE Static Analysis of Idealized Brake Rotors

Rajesh¹,

Mahesha²,

Shivarudraiah

et al. 2019

MSF

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The quest for the lighter materials have motivated the researchers worldwide to develop a newer composites. with the discovery of carbon nanotubes, a class of novel material it has been possible to fabricate the components for the field of automotive and aircraft industries where the strength to weight ratio becomes prominent. In the present work the Al7075 alloy was reinforced with the electroless Ni coated Multiwalled carbon nanotubes in 2wt%,4wt% and 6wt% the nanocomposites were prepared via die casting technique and the resulting composites were tested for the strength and hardness the tensile strength for 6wt% reinforcement found to be 240Mpa a 33% increase compared to unreinforced composite and micro hardness was as high as 61. The SEM analysis revealed that the improvements in the hardness could be attributed to the carbon atoms inclusion in composite lattices.The finite element analysis was carried out for the idealized composite commercial brake rotor the max stress bearing capacity was 172.74 N/mm2 and max deformation was 1.85x10-5 for the 6wt% of reinforcement. Keywords: nanocomposites, die casting, microhardness, aluminium brake rotors.

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Semi-solid Processing

2015

SOSEI-TO-KAKOU

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Nanoparticles Distribution and Mechanical Properties of Aluminum‐Matrix Nano‐Composites Treated with External Fields

Cited by 3 publications

References 21 publications

Coupling of Acoustic Cavitation with Dem-Based Particle Solvers for Modeling De-agglomeration of Particle Clusters in Liquid Metals

Coupling of Acoustic Cavitation with Dem-Based Particle Solvers for Modeling De-agglomeration of Particle Clusters in Liquid Metals

Development of Al7075 Reinforced with Multiwalled Carbon Nanotubes for Strength Evaluation and FE Static Analysis of Idealized Brake Rotors

Semi-solid Processing

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