22 August 2014
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Paper Information

Laser shock processing of low carbon steel

Author(s): G. Banas, J. Chu, J.M. Rigsbee, F.V. Lawrence & H.E. Elsayed-Ali

Abstract:
hock processing of low carbon steel G.

Banas," J.

Chu," J.M.

Rigsbee," F.V.

Lawrence/ H.E.

Elsayed-Ali^ "University of Illinois at Urbana- Champaign, USA & Laboratory for Laser Energetics, Rochester, Fork, ABSTRACT The effect of laser shock processing (LSP) on the microstructure and mechanical properties of the low carbon (0.04 wt % C) steel was studied.

LSP was performed with a 1.054 ^m wavelength Ndrphosphate laser operating in a pulse mode (600 ps duration and up to 200 J energy with a 3 mm diameter beam) with power densities above 10* * W/cmA Shock waves were generated by volume expansion of the plasma formed when the material was laser irradiated.

Maximum shock wave intensities were obtained by not using a plasma-confining overlay.

When an energy-absorbing black paint coating was used, the specimen surface yielded LSP-induced deformation without melting. The maximum pressure we were able to generate was approximately 2.5 GPa. The rise-time was about ...

Pages: 14
Size: 1,859 kb
Paper DOI: 10.2495/SURF930161

 

 

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Computer Methods and Experimental Measurements for Surface Treatment Effects

Computer Methods and Experimental Measurements for Surface Treatment Effects

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