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
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3D printing graphene-aluminum nanocomposites
Zengrong Hu,Feng Chen,Xu Jiale,Qiong Nian,Dong Lin,Changjun Chen,Xing Zhu,Yao Chen,Zhang Min +8 more
TL;DR: In this article, the microstructure and property of graphene reinforced aluminum matrix composites (Gr-Al) as fabricated by laser 3D printing was studied, where the mixture of graphene and aluminum powders was prepared by ball milling with various graphene weight ratios, and then sintered by the selective laser melting to fabricate bulk Gr-Al composites.
Journal ArticleDOI
Graphene-reinforced aluminum matrix composites prepared by spark plasma sintering
TL;DR: Graphene-reinforced 7055 aluminum alloy composites with different contents of graphene were prepared by spark plasma sintering (SPS), and the structure and mechanical properties of the composites were investigated.
Journal ArticleDOI
Synthesis and mechanical properties of Al matrix composites reinforced with few-layer graphene and graphene oxide
H. Asgharzadeh,Maryam Sedigh +1 more
TL;DR: The reinforcing effect of graphene nanosheets in Al matrix composites has been studied in this paper, where the Al powder was mixed with 1.5% of few-layer graphene and graphene oxide (FLGO) using a wet method followed by cold-compaction and sintering.
Journal ArticleDOI
Achieving high strength and ductility in graphene/magnesium composite via an in-situ reaction wetting process
Miao Wang,Yu Zhao,Lidong Wang,Yun-Peng Zhu,Xiaojun Wang,Sheng Jie,Ziyue Yang,Hailong Shi,Shi Zhendong,Weidong Fei +9 more
TL;DR: In this article, the dispersibility, interfacial wettability and mechanical properties of graphene/magnesium composites via an in-situ reaction wetting process were investigated.
Journal ArticleDOI
Molecular dynamics study of strengthening mechanism of nanolaminated graphene/Cu composites under compression.
TL;DR: In this paper, molecular dynamics simulations of nanolaminated graphene/Cu (NGCu) and pure Cu under compression are conducted to investigate the underlying strengthening mechanism of graphene and the effect of lamella thickness.
References
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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
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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.