Abstract
Carbon nanotubes (CNTs) reinforced aluminum matrix nanocomposites were fabricated by Accumulative Roll Bonding (ARB). The surface morphologies, mechanical properties, grains texture and orientation of the Al/CNTs nanocomposites were characterized, and the mechanisms and influences of CNTs contents and ARB cycles on the mechanical performance and grain textures of Al/CNTs were investigated and revealed. The strength of the composites rose with increase of the CNTs content, and the ARB cycles showed a 26% improvement when the CNTs content varied from 0 to 1 volume percent (vol.%). The increase in the mass fraction of the carbon nanotubes made the grain distribution in the Al/CNTs nanocomposite samples more diffuse. Besides, the stable texture of the hot rolled crystal grains on the α orientation are constantly turning to {011}< 011> with the mass fraction of the reinforcing phase increased.
Highlights
Published: 26 September 2021Aluminum matrix nanocomposites have attracted considerable interest for structural design due to their excellent mechanical and physical properties
The elongation of the Al/MWCNT-Al2 O3 hybrid composite is decreased by ten cycles of Accumulative Roll Bonding (ARB) [5]
The present work aimed at preparing Al/Carbon nanotubes (CNTs) composites using the ARB process and in revealing the microstructures and mechanical properties of the composites
Summary
Aluminum matrix nanocomposites have attracted considerable interest for structural design due to their excellent mechanical and physical properties. The ceramic nanoparticles in the Al matrix could increase the porosity and decrease the density to fabricate lightweight composites [2] These excellent properties offer wide opportunities in applications such as aerospace and automotive structural components. A metal matrix composite fabricated by the ARB process is fabricated. A metal matrix composite fabricated by the ARB process is not not necessary to process additional densification treatment. The present work aimed at preparing Al/CNTs composites using the ARB process and in revealing the microstructures and mechanical properties of the composites. CNTs were mixed with the the as-prepared solution by ultrasonicated treatment for min. The second step was to as-prepared solution by ultrasonicated treatment for 30 min. Al three sheet compositions was prepared the same process as the contrast.
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