Effects of average grain size and misorientation angle on the deformation behaviour of nanocrystalline grain structures

Sanusi Kazeem Oladele, Afolabi Ayo Samuel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study reports an investigation using finite element analysis to study the behaviour of nanocrystalline grain structures during severe plastic deformation. The effects of average grain size and misorientation angle on the deformation are examined in order to evaluate how microstructural features might explain the observed increase in strength of nanocrsytalline metals. A polycrystal model is generated using a planar tessellation with randomly orientated grains with the numbers of grains being 15, 22 and 34. The simulated results show that the grain size and the grain misorientation angle have significant effects on the stress distribution and average stress within the polycrystalline area. This study thus successfully demonstrated a relatively efficient finite element technique which makes the stress field dependent on the grain size and the angle of misorientation between grains.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
Pages693-700
Number of pages8
Volume1
Publication statusPublished - Dec 1 2012
EventMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012 - Pittsburgh, PA, United States
Duration: Oct 7 2012Oct 11 2012

Other

OtherMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
CountryUnited States
CityPittsburgh, PA
Period10/7/1210/11/12

Fingerprint

Crystal microstructure
Polycrystals
Stress concentration
Plastic deformation
Metals
Finite element method

All Science Journal Classification (ASJC) codes

  • Materials Science (miscellaneous)

Cite this

Oladele, S. K., & Samuel, A. A. (2012). Effects of average grain size and misorientation angle on the deformation behaviour of nanocrystalline grain structures. In Materials Science and Technology Conference and Exhibition 2012, MS and T 2012 (Vol. 1, pp. 693-700)
Oladele, Sanusi Kazeem ; Samuel, Afolabi Ayo. / Effects of average grain size and misorientation angle on the deformation behaviour of nanocrystalline grain structures. Materials Science and Technology Conference and Exhibition 2012, MS and T 2012. Vol. 1 2012. pp. 693-700
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Oladele, SK & Samuel, AA 2012, Effects of average grain size and misorientation angle on the deformation behaviour of nanocrystalline grain structures. in Materials Science and Technology Conference and Exhibition 2012, MS and T 2012. vol. 1, pp. 693-700, Materials Science and Technology Conference and Exhibition 2012, MS and T 2012, Pittsburgh, PA, United States, 10/7/12.

Effects of average grain size and misorientation angle on the deformation behaviour of nanocrystalline grain structures. / Oladele, Sanusi Kazeem; Samuel, Afolabi Ayo.

Materials Science and Technology Conference and Exhibition 2012, MS and T 2012. Vol. 1 2012. p. 693-700.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Oladele SK, Samuel AA. Effects of average grain size and misorientation angle on the deformation behaviour of nanocrystalline grain structures. In Materials Science and Technology Conference and Exhibition 2012, MS and T 2012. Vol. 1. 2012. p. 693-700