SEM and TEM Microstructure Characterization of a Commercial Purity Aluminum after Laser Treatment

Magdalena Rozmus-Górnikowska; Łukasz Major; Jerzy Morgiel

doi:10.4028/www.scientific.net/SSP.186.323

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HomeSolid State PhenomenaSolid State Phenomena Vol. 186SEM and TEM Microstructure Characterization of a...

SEM and TEM Microstructure Characterization of a Commercial Purity Aluminum after Laser Treatment

Abstract:

The effect of the Laser Shock Processing (LSP) on the microstructure of the surface layer of a commercially pure alluminum was studied. LSP process was performed with a high-power Q-switched Nd:YAG ReNOVALaser, operating in a pulse mode (18 ns), with a power density of 0,43 GW/cm2. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and a Scanning Transmision Electron Microscopy (STEM) have been used to study the microstructure of the surface layer of the investigated material after laser treatment. SEM investigation showed that after LSP process surface melting occurs but is restricted to a thin layer. However, both TEM and STEM images indicate that under the thin melting layer a high density of dislocations were visible. It has been found that the laser beam with employing parameters caused plastic deformation of the surface layer of the investigated aluminum.

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Periodical:

Solid State Phenomena (Volume 186)

Pages:

323-326

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.186.323

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Online since:

March 2012

Authors:

Magdalena Rozmus-Górnikowska, Łukasz Major, Jerzy Morgiel

Keywords:

Commercial Purity Aluminum, Laser Shock Processing (LSP), Microstructure, SEM, STEM, Surface Roughness (SR), Surface Treatment, TEM

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