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Reversal straining to manage structure in pure aluminum under SPD

Orlov, Dmitry; Bhattacharjee, Pinaki Prasad; Todaka, Yoshikazu; Umemoto, Minoru and Tsuji, Nobuhiro (2008) 4th International Conference on Nanomaterials by Severe Plastic Deformation In Materials Science Forum 584-586 PART 1. p.133-138
Abstract

All the SPD techniques introduce reversal straining principally, but effects of the reversal deformation on structure evolution were not studied directly yet. In the present work, an attempt was made to manage structure in pure (99.99%) Al by strain reversal through high pressure torsion (HPT). Total accumulated deformation up to equivalent strain ∼8 was used. General trend of the grain refinement is similar for both deformation modes; and it is typical with all other SPD processed FCC metals. At the same time, the difference in micro structure evolution at the vicinity of the specimen axis and with increasing distance in the radial direction introduces microstructural heterogeneities which are specific features of the reversal... (More)

All the SPD techniques introduce reversal straining principally, but effects of the reversal deformation on structure evolution were not studied directly yet. In the present work, an attempt was made to manage structure in pure (99.99%) Al by strain reversal through high pressure torsion (HPT). Total accumulated deformation up to equivalent strain ∼8 was used. General trend of the grain refinement is similar for both deformation modes; and it is typical with all other SPD processed FCC metals. At the same time, the difference in micro structure evolution at the vicinity of the specimen axis and with increasing distance in the radial direction introduces microstructural heterogeneities which are specific features of the reversal straining. In the monotonie deformation process the A ({111}〈011〉) fiber is gradually substituted by the C component ({0 0 1}〈 1 1 0〉) with increasing strain before it is found to weaken. In the reverse straining process the A fiber is found to dominate the deformation texture in the low strain region. In the reverse straining process at high strain level, a {001}〈100〉 component appear. © 2008 Trans Tech Publications.

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author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Aluminum, HTP, SPD, Structure, Texture
in
Materials Science Forum
volume
584-586 PART 1
pages
6 pages
conference name
4th International Conference on Nanomaterials by Severe Plastic Deformation
external identifiers
  • scopus:56349163361
ISSN
02555476
ISBN
9770255547605
language
English
LU publication?
no
id
a0e217ed-aa86-4385-90f1-12673b60dcd1
date added to LUP
2016-06-20 15:43:28
date last changed
2017-03-05 04:34:46
@inproceedings{a0e217ed-aa86-4385-90f1-12673b60dcd1,
  abstract     = {<p>All the SPD techniques introduce reversal straining principally, but effects of the reversal deformation on structure evolution were not studied directly yet. In the present work, an attempt was made to manage structure in pure (99.99%) Al by strain reversal through high pressure torsion (HPT). Total accumulated deformation up to equivalent strain ∼8 was used. General trend of the grain refinement is similar for both deformation modes; and it is typical with all other SPD processed FCC metals. At the same time, the difference in micro structure evolution at the vicinity of the specimen axis and with increasing distance in the radial direction introduces microstructural heterogeneities which are specific features of the reversal straining. In the monotonie deformation process the A ({111}〈011〉) fiber is gradually substituted by the C component ({0 0 1}〈 1 1 0〉) with increasing strain before it is found to weaken. In the reverse straining process the A fiber is found to dominate the deformation texture in the low strain region. In the reverse straining process at high strain level, a {001}〈100〉 component appear. © 2008 Trans Tech Publications.</p>},
  author       = {Orlov, Dmitry and Bhattacharjee, Pinaki Prasad and Todaka, Yoshikazu and Umemoto, Minoru and Tsuji, Nobuhiro},
  booktitle    = {Materials Science Forum},
  isbn         = {9770255547605},
  issn         = {02555476},
  keyword      = {Aluminum,HTP,SPD,Structure,Texture},
  language     = {eng},
  pages        = {133--138},
  title        = {Reversal straining to manage structure in pure aluminum under SPD},
  volume       = {584-586 PART 1},
  year         = {2008},
}