Journal ArticleDOI
Effect of ball milling on graphene reinforced Al6061 composite fabricated by semi-solid sintering
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In this paper, a 1.0-wt.% graphene reinforced aluminum 6061 (Al6061) composite was synthesized to investigate the effects of graphene dispersion by ball milling technique.Abstract:
A 1.0 wt.% graphene reinforced aluminum 6061 (Al6061) composite was synthesized to investigate the effects of graphene dispersion by ball milling technique. The Al6061 powder and graphene were ball milled at different milling times. The composites were then synthesized by hot compaction in the semi-solid regime of the Al6061. A three point bending test was performed to characterize the mechanical properties of the composite. The ball milled powder and the fracture surfaces of the composites were analyzed using the scanning electron microscopy. A maximum enhancement of 47% in flexural strength was observed when compared with the reference Al6061 processed at the same condition.read more
Citations
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Journal Article
Consolidation and Characterization of Copper Alumina Composites through Powder Metallurgy
TL;DR: In this paper, the particle size reduction from 3h to 12h is calculated by using Williamson and Hall equation of uniform deformation model, which shows the greater reduction of size between the third and sixth hour of milling whereas a graph comparing the milling time and lattice strain shows a lesser raise of strain during same milling period.
Book ChapterDOI
Failure of Metal-Matrix Composites
TL;DR: In this article, a review on the tensile, creep and fatigue deformation characteristics of metal-matrix composites reinforced with ceramic microparticles is presented, and the failure mechanisms of discontinuously reinforced Al- and Ti-based MMCs from micro-to-nanometer scale.
Proceedings ArticleDOI
Characteristics study on aluminium graphene composite for different sintering approaches
TL;DR: In this paper, the authors analyzed the Al 6061 matrix micro composites with different reinforcement content of Graphene (0.25, 0.50, and 0.80 weight %).
Journal ArticleDOI
Effects of 3D graphene networks on the microstructure and physical properties of SiC/Al composites
TL;DR: A series of SiC/Al composites with different contents of 3-dimensional graphene networks (3DGN) were prepared by using mechanical alloying (MA) and spark plasma sintering (SPS) as discussed by the authors .
References
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Journal ArticleDOI
Interpretation of Raman spectra of disordered and amorphous carbon
Andrea C. Ferrari,John Robertson +1 more
TL;DR: In this paper, a model and theoretical understanding of the Raman spectra in disordered and amorphous carbon is given, and the nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of \ensuremath{\pi} states and the long-range polarizability of the long range bonding.
Book
Mechanical Alloying And Milling
TL;DR: Mechanical Alloying (MA) is a solid-state powder processng technique involving repeated welding, fracturing, and rewelding of powder particles in a high-energy ball mill as mentioned in this paper.
Journal ArticleDOI
Spatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene
D. Graf,F. Molitor,Klaus Ensslin,Christoph Stampfer,A. Jungen,Christofer Hierold,Ludger Wirtz +6 more
TL;DR: In this article, the authors used a scanning confocal approach to collect spectral data with spatial resolution, which allows them to directly compare Raman images with scanning force micrographs.
Journal ArticleDOI
Uniaxial strain in graphene by Raman spectroscopy: G peak splitting, Grüneisen parameters, and sample orientation
T. M. G. Mohiuddin,Antonio Lombardo,Rahul R. Nair,A. Bonetti,Giorgio Savini,Rashid Jalil,Nicola Bonini,Denis M. Basko,Costas Galiotis,Nicola Marzari,Kostya S. Novoselov,Andre K. Geim,Andrea C. Ferrari +12 more
TL;DR: In this paper, the constitutive relation of graphene and probe the physics of its optical phonons by studying its Raman spectrum as a function of uniaxial strain was uncovered.
Journal ArticleDOI
Measurements of near-ultimate strength for multiwalled carbon nanotubes and irradiation-induced crosslinking improvements.
Bei Peng,Mark A Locascio,Peter Zapol,Shuyou Li,Steven L. Mielke,George C. Schatz,Horacio D. Espinosa +6 more
TL;DR: Multiwalled carbon nanotubes with a mean fracture strength >100 GPa are reported, which exceeds earlier observations by a factor of approximately three and are in excellent agreement with quantum-mechanical estimates for nanot tubes containing only an occasional vacancy defect, and are approximately 80% of the values expected for defect-free tubes.