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Harmonic-structured copper : Performance and proof of fabrication concept based on severe plastic deformation of powders

Sawangrat, Choncharoen; Kato, Shota; Orlov, Dmitry and Ameyama, Kei (2014) In Journal of Materials Science 49(19). p.6579-6585
Abstract

Pure copper (Cu) having bimodal 'harmonic structure' (HS) was fabricated by a technique based on severe plastic deformation of powders, which involved tailored mechanical milling and spark plasma sintering. The harmonic-structured Cu demonstrates a unique combination of high strength and large elongation superior to its homogeneous as well as bimodal heterogeneous counterparts. Specific features of harmonic structure, i.e. continuous network of ultra-fine grained (UFG) regions encompassing coarse-grained areas, lead to the extension of uniform elongation. The optimum combination of properties in pure Cu is found to be in the harmonic-structured material having 40 % UFG fraction.

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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials Science
volume
49
issue
19
pages
7 pages
publisher
Springer
external identifiers
  • scopus:84904719685
ISSN
0022-2461
DOI
10.1007/s10853-014-8258-4
language
English
LU publication?
no
id
b5a5dc5d-b148-43e5-92f2-3561a1f2e12c
date added to LUP
2016-06-20 15:33:01
date last changed
2017-11-05 05:04:34
@article{b5a5dc5d-b148-43e5-92f2-3561a1f2e12c,
  abstract     = {<p>Pure copper (Cu) having bimodal 'harmonic structure' (HS) was fabricated by a technique based on severe plastic deformation of powders, which involved tailored mechanical milling and spark plasma sintering. The harmonic-structured Cu demonstrates a unique combination of high strength and large elongation superior to its homogeneous as well as bimodal heterogeneous counterparts. Specific features of harmonic structure, i.e. continuous network of ultra-fine grained (UFG) regions encompassing coarse-grained areas, lead to the extension of uniform elongation. The optimum combination of properties in pure Cu is found to be in the harmonic-structured material having 40 % UFG fraction.</p>},
  author       = {Sawangrat, Choncharoen and Kato, Shota and Orlov, Dmitry and Ameyama, Kei},
  issn         = {0022-2461},
  language     = {eng},
  number       = {19},
  pages        = {6579--6585},
  publisher    = {Springer},
  series       = {Journal of Materials Science},
  title        = {Harmonic-structured copper : Performance and proof of fabrication concept based on severe plastic deformation of powders},
  url          = {http://dx.doi.org/10.1007/s10853-014-8258-4},
  volume       = {49},
  year         = {2014},
}