Deformation behaviour at macro- and nano-length scales: The development of orientation gradients

Gurao, NP and Suwas, Satyam (2013) Deformation behaviour at macro- and nano-length scales: The development of orientation gradients. In: Materials Letters, 99 . pp. 81-85.

PDF Mat_Lett_99_81_2013.pdf - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

The deformation behaviour of macrocrystalline and nanocrystalline nickel shows a striking similarity in terms of higher intragranular misorientation and a texture with dominant Brass component on rolling. This is in contrast to microcrystalline nickel, with lower intragranular misorientation and typical Copper type texture. This has been attributed to the free surfaces in macrocrystalline sample and grain boundaries in nanocrystalline sample. Experimental evidence of `Grain Boundary Affected Zone' (GBAZ) showing multi-slip in contrast to limited slip in the grain interiors has been provided. The similarity in evolution of texture and intragranular misorientation is explained on the basis of reduced contribution from the GBAZ at the two extreme length scales.

Item Type:	Journal Article
Publication:	Materials Letters
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Texture; Deformation and Fracture; Size Effect; EBSD
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	16 Aug 2013 08:07
Last Modified:	16 Aug 2013 08:07
URI:	http://eprints.iisc.ac.in/id/eprint/46991

Actions (login required)

View Item