Ultrafine Grained Materials II 2002
DOI: 10.1002/9781118804537.ch38
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Deformation Mechanisms at Different Grain Sizes in a Cryogenically Ball‐Milled Al‐Mg Alloy

Abstract: Abstract-An Al-7.5 wt. % Mg alloy was ball-milled in liquid N 2 for eight hours and its microstructures were investigated using transmission electron microscopy. Electron diffraction confirmed that the resulting powder is a supersaturated Al-Mg solid solution with a face-centered cubic structure. Three nanostructures with different grain size ranges and shapes were observed and the deformation mechanisms in these structures were found to be different. The reasons for the different deformation mechanisms were d… Show more

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Cited by 4 publications
(3 citation statements)
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“…TEM sample preparation consisted of suspending the nanostructured powders in ethanol, agitating the solution by hand, and submersing a Cu TEM grid into the ethanol where the powders adhered to it. This method has an advantage over the cold-compaction method [23] in terms of minimizing the effects of sample preparation on the microstructures and morphologies of the milled powders. In the cold-compaction method [23], the powders are consolidated to a bulk pellet under very high pressures (usually more than 1 GPa).…”
Section: Cryomilling and Characterization Of Milled Powdersmentioning
confidence: 99%
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“…TEM sample preparation consisted of suspending the nanostructured powders in ethanol, agitating the solution by hand, and submersing a Cu TEM grid into the ethanol where the powders adhered to it. This method has an advantage over the cold-compaction method [23] in terms of minimizing the effects of sample preparation on the microstructures and morphologies of the milled powders. In the cold-compaction method [23], the powders are consolidated to a bulk pellet under very high pressures (usually more than 1 GPa).…”
Section: Cryomilling and Characterization Of Milled Powdersmentioning
confidence: 99%
“…This method has an advantage over the cold-compaction method [23] in terms of minimizing the effects of sample preparation on the microstructures and morphologies of the milled powders. In the cold-compaction method [23], the powders are consolidated to a bulk pellet under very high pressures (usually more than 1 GPa). As a result, additional severe plastic deformation is introduced into the material.…”
Section: Cryomilling and Characterization Of Milled Powdersmentioning
confidence: 99%
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