The role of crystallographic texture on mechanically induced grain boundary migration

Show simple item record Renk, O Ghosh, Pradipta Sabat, R. K. Eckert, J. Pippan, R. 2020-10-06T07:55:37Z 2020-10-06T07:55:37Z 2020-11
dc.identifier.citation Renk, O; Ghosh, Pradipta; Sabat, R. K.; Eckert, J. and Pippan, R., "The role of crystallographic texture on mechanically induced grain boundary migration", Acta Materialia, DOI: 10.1016/j.actamat.2020.08.071, vol. 200, pp. 404-416, Nov. 2020. en_US
dc.identifier.issn 1359-6454
dc.description.abstract Mechanically induced migration of grain boundaries and triple junctions not only determines the size and shape of nanostructures created by severe plastic deformation, it substantially affects their mechanical properties as well. Grain growth during deformation of nanostructures has been widely observed. As the nanostructures processed by severe plastic deformation are a consequence of a dynamic equilibrium between refinement and local mechanically induced coarsening, it is widely accepted that such nanostructures would remain stable upon further loading. However, pronounced grain coarsening can be observed when pure UFG copper prepared by high pressure torsion (HPT) is additionally cold rolled. The coarsening continues up to rolling strains, ? = 1, i.e. until favourable grain orientations for rolling are developed. For larger strains subsequent refinement to minimum boundary spacing identical to the HPT microstructure is observed. Interestingly, less grain growth is observed for two other sample orientations of the HPT microstructure which are rolled along different directions with respect to the sample coordinate frame. Crystallographic texture of these samples were favourable with respect to the new strain path, highlighting its role for mechanically induced growth and suggesting a distinct influence of grain orientation on the mechanically induced coarsening process.
dc.description.statementofresponsibility by O. Renk, P.Ghosh, R.K. Sabat, J. Eckert and R. Pippan
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Triple junctions en_US
dc.subject Grain boundary migration en_US
dc.subject Severe plastic deformation en_US
dc.subject Strain path change en_US
dc.subject Cold rolling en_US
dc.subject Copper en_US
dc.title The role of crystallographic texture on mechanically induced grain boundary migration en_US
dc.type Article en_US
dc.relation.journal Acta Materialia

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