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

Abstract:

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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.

Info:

Periodical:

Materials Science Forum (Volumes 495-497)

Edited by:

Paul Van Houtte and Leo Kestens

Pages:

1037-1042

DOI:

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

Citation:

D. W. Brown et al., "The Role of Texture, Temperature and Strain Rate in the Activity of Deformation Twinning ", Materials Science Forum, Vols. 495-497, pp. 1037-1042, 2005

Online since:

September 2005

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Price:

$35.00

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