Assume 30% rolling is done in one direction followed by 30% cross rolling in another direction. How different is this condition from that of 60% rolling in one direction of a ductile FCC material.
Plastic deformation certaonly induces the grain rotation for polycrystalline materials. For rolling along one direction and then rolling again along the other rolling direction, the change in texture (preferred oreintation) should be different from that by rolling along the single strain path. Besides this, the change in slip/twin systems due to different strain paths may also alter the local microstructures (such as defect configuration and microstress).
Once a considerable amount of plastic dislocations are achieved in a strain path, the material behaves almost perfectly elastically. On changing the direction of the strain path, peculiar results with respect to the compression zone and the plastic cone appear. Please have a look at pages 8-12 in the attached link
http://onlinelibrary.wiley.com/doi/10.1002/aic.14572/pdf
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