The Role of Texture, Temperature and Strain Rate in the Activity of Deformation Twinning

Donald W. Brown; Sean R. Agnew; S.P. Abeln; W.R. Blumenthal; Mark A.M. Bourke; M.C. Mataya; Carlos Tomé; Sven C. Vogel

doi:10.4028/www.scientific.net/MSF.495-497.1037

Paper Titles

Testing Polycrystal Plasticity Models on Observed Lattice Rotations and Dislocation Structures
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A Combined Finite Element and Self-Consistent Model; Validation by Neutron Diffraction Strain Scanning
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Experimental Study on the Influence of Grain Boundaries on the Subdivision Behaviour of Al-3%Mg Polycrystals during Cold Deformation Using Electron Backscatter Diffraction
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Effect of the Strain Reversal on Grain Boundary Character and Substructure Development on a Hot Worked Austenitic Stainless Steel
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The Role of Texture, Temperature and Strain Rate in the Activity of Deformation Twinning
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Latent Hardening in Copper and Copper Alloys
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Analysis of Intragranular Misorientation Related to Deformation in an Al-Mg-Mn Alloy
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Evolution of Internal Stresses during the Plastic Deformation of IF Steel and Their Correlation with Crystal Orientation
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Survival of Goss Grains during Cold Rolling of a Silicon Steel Single Crystal
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The Role of Texture, Temperature and Strain Rate in the Activity of Deformation Twinning

Abstract:

Plastic deformation in cubic metals is relatively simple due to the high crystallographic symmetry of the underlying structure. Typically, one unique slip mode can provide arbitrary deformation. This is not true in lower symmetry hexagonal metals, where prismatic and basal slip (the usual favored modes) are insufficient to provide arbitrary deformation. Often, either pyramidal slip and/or deformation twinning must be activated to accommodate imposed plastic deformation. The varied difficulty of activating each of these deformation mechanisms results in a highly anisotropic yield surface and subsequent mechanical properties. Further, the relative activity of each deformation mode may be manipulated through control of the initial crystallographic texture, opening new opportunities for the optimization of mechanical properties for a given application.