Journal ArticleDOI
Synthesis and characterization of high volume fraction Al-Al2O3 nanocomposite powders by high-energy milling
TLDR
A uniform distribution of the Al2O3 reinforcement in the Al matrix was successfully obtained after milling the powders for a period of 20 h at a ball-to-powder ratio of 10:1 in a SPEX mill as discussed by the authors.Abstract:
Al–Al2O3 metal matrix composite (MMC) powders with volume fractions of 20, 30, and 50% Al2O3 were synthesized by high-energy milling of the blended component powders. The particle sizes of Al2O3 studied were 50 nm, 150 nm, and 5m. A uniform distribution of the Al2O3 reinforcement in the Al matrix was successfully obtained after milling the powders for a period of 20 h at a ball-to-powder ratio of 10:1 in a SPEX mill. The uniform distribution of Al2O3 in the Al matrix was confirmed by characterizing these nanocomposite powders by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray mapping, and X-ray diffraction (XRD) techniques. © 2006 Elsevier B.V. All rights reserved.read more
Citations
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Journal ArticleDOI
Mechanically alloyed nanocomposites
TL;DR: In this paper, a review of recent advances in the synthesis and properties of nanocomposites obtained by mechanical alloying has been presented, including metal-based and ceramic-based composites.
Journal ArticleDOI
Mechanical Alloying: A Novel Technique to Synthesize Advanced Materials.
TL;DR: The application of mechanical alloying to synthesize some advanced materials such as pure metals and alloys, hydrogen storage materials, and energy materials is described and an outlook on future prospects of this technique is concluded.
Journal ArticleDOI
Synthesis of nanocomposites and amorphous alloys by mechanical alloying
TL;DR: In this article, the authors present two specific examples of synthesis of nanocomposites containing a high volume fraction of the reinforcement phase in Al and TiAl matrices, and explain the mechanism of amorphization in these mechanically alloyed powder blends.
Journal ArticleDOI
A review on the synthesis of in situ aluminum based composites by thermal, mechanical and mechanical–thermal activation of chemical reactions
TL;DR: In this paper, the authors review the recent progress in the synthesis of in situ particle reinforced aluminum composites using thermal, mechanical and combined mechanical-thermal activation of aluminothermic reduction reactions.
Journal ArticleDOI
Production of Al–20 wt.% Al2O3 composite powder using high energy milling
TL;DR: In this paper, high energy ball milling was used to produce a nanostructured Al matrix composite reinforced by submicron α-alumina particles, which can increase the hardness of powder due to a nano-structured matrix and oxide dispersion strengthening.
References
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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.
Book
An introduction to metal matrix composites
T.W. Clyne,Philip J. Withers +1 more
TL;DR: In this article, the Eshelby approach is used to model composites and a program for calculating the S-tensors of a composite model is presented, along with a list of programs for an Eshelbys calculation.
Book
X-Ray Diffraction: A Practical Approach
C. Suryanarayana,M. Grant Norton +1 more
TL;DR: In this article, X-Rays and Diffraction Lattices and Crystal Structures and Hexagonal Structures are used for X-Ray Diffraction Experimental Modules: Crystal structure determination, I: Cubic Structures Crystal Structure Determination, II: Hexagonal structures Precise Lattice Parameter Measurements Phase Diagram Determination Detection of Long-Range Ordering Determination of Crystallite Size and Lattite Strain Quantitative Analysis of Powder Mixtures Identification of an Unknown Specimen: Appendices: Plane-Spacing Equations and Unit
Journal ArticleDOI
The mechanism of mechanical alloying
J. S. Benjamin,T. E. Volin +1 more
TL;DR: The mechanical alloying process as mentioned in this paper is an entirely solid state process, permitting dispersion of insoluble phases such as refractory oxides and addition of reactive alloying elements such as aluminum and titanium.
Journal ArticleDOI
Tensile properties of nanometric Al2O3 particulate-reinforced aluminum matrix composites
TL;DR: The hardness and tensile properties of aluminum matrix composites reinforced with nanometric Al2O3 particulate have been found to increase with the volume fraction of the reinforcement.