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HomeSolid State PhenomenaSolid State Phenomena Vol. 258Non-Schmid Phenomena in HCP Materials

Non-Schmid Phenomena in HCP Materials

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Abstract:

The Schmid law says that yielding takes place when resolved shear stress on slip plane reaches the critical value. It is valid for wide variety of materials. However, it is well known that breaking of Schmid law takes place in bcc materials due to non-planar splitting of dislocation cores. The non-Schmid behavior is also possible for plastic deformation of fcc and hcp materials. Particularly, it is sometimes reported for deformation twinning. Present paper demonstrates the non-Schmid phenomena in hcp magnesium by means of computer simulations. We consider influence of non-glide stress components on motion of screw <a> dislocation as well as migration of twin boundaries.

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Periodical:

Solid State Phenomena (Volume 258)

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29-32

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.258.29

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Online since:

December 2016

Authors:

Andriy Ostapovets*, Olena Vatazhuk

Keywords:

Twinning, Disconnection, Dislocation, HCP, Schmid Law

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