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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 481Analysis and Calculation of the Strain Field...

Analysis and Calculation of the Strain Field Disturbance Caused by Dislocation Migration

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Abstract:

In order to elucidate the different characters of elastic waves caused respectively by screw and edge dislocation movement, we calculated the stain field disturbance caused by migration of dislocation by elastic theory. Through the calculation, it was found that the strain field disturbance resulted from screw dislocation migration produces a transverse wave radiation while that resulted from edge dislocation migration produces transverse wave and longitudinal wave simultaneously. The result reveals the different energy radiation characters of screw dislocations and edge dislocations and explains the reason that edge dislocation moves faster than screw dislocation in general experiment. It also provides a theoretical basis for determining microcosmic mechanism of plastic deformation of metals by monitoring the changes of elastic waves.

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Periodical:

Applied Mechanics and Materials (Volume 481)

Pages:

212-216

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.481.212

Citation:

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Online since:

December 2013

Authors:

Meng Qi Zhang, Shan Wu Yang

Keywords:

Dislocation Movement, Longitudinal Wave, Strain Field, Transverse Wave

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