Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Advances in superplasticity of ultrafine-grained alloys : Recent research and development. / Valiev, Ruslan Z.; Semenova, Irina P.
Superplasticity in Advanced Materials, ICSAM 2015. ed. / Goroh Itoh; Junya Kobayashi; Koichi Kitazono; Eiichi Sato; Yoshimasa Takayama; Takaomi Itoi; Koji Morita. Trans Tech Publications Ltd, 2016. p. 23-33 (Materials Science Forum; Vol. 838-839).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Advances in superplasticity of ultrafine-grained alloys
T2 - 12th International Conference on Superplasticity in Advanced Materials, ICSAM 2015
AU - Valiev, Ruslan Z.
AU - Semenova, Irina P.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Recent studies have revealed that ultrafine-grained (UFG) metals and alloys produced by severe plastic deformation (SPD) can demonstrate extraordinary superplasticity at low temperatures and/or high strain rates. This work presents new results on superplasticity in several UFG Al and Ti alloys focusing on microstructural evolution and strain hardening, as well as the challenges of their application. Grain refinement in these alloys was accomplished using severe plastic deformation techniques, including new modifications of equal channel angular pressing (ECAP). Unusual behavior of UFG alloys originates both from the formation of ultrafine grain by SPD processing as well as the state of grain boundaries in these materials. It is established that superplastic deformation allowed not only to attain their efficient forming, but also to improve the ultrafinegrained structure and to obtain enhanced mechanical properties in the articles produced. The results demonstrate the possibilities of new applications of superplastic forming using bulk nanostructured materials.
AB - Recent studies have revealed that ultrafine-grained (UFG) metals and alloys produced by severe plastic deformation (SPD) can demonstrate extraordinary superplasticity at low temperatures and/or high strain rates. This work presents new results on superplasticity in several UFG Al and Ti alloys focusing on microstructural evolution and strain hardening, as well as the challenges of their application. Grain refinement in these alloys was accomplished using severe plastic deformation techniques, including new modifications of equal channel angular pressing (ECAP). Unusual behavior of UFG alloys originates both from the formation of ultrafine grain by SPD processing as well as the state of grain boundaries in these materials. It is established that superplastic deformation allowed not only to attain their efficient forming, but also to improve the ultrafinegrained structure and to obtain enhanced mechanical properties in the articles produced. The results demonstrate the possibilities of new applications of superplastic forming using bulk nanostructured materials.
KW - Grain boundaries
KW - Severe plastic deformation
KW - Superplasticity
KW - Ultrafine-grained materials
UR - http://www.scopus.com/inward/record.url?scp=84958059922&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.838-839.23
DO - 10.4028/www.scientific.net/MSF.838-839.23
M3 - Conference contribution
AN - SCOPUS:84958059922
SN - 9783038356721
T3 - Materials Science Forum
SP - 23
EP - 33
BT - Superplasticity in Advanced Materials, ICSAM 2015
A2 - Itoh, Goroh
A2 - Kobayashi, Junya
A2 - Kitazono, Koichi
A2 - Sato, Eiichi
A2 - Takayama, Yoshimasa
A2 - Itoi, Takaomi
A2 - Morita, Koji
PB - Trans Tech Publications Ltd
Y2 - 6 September 2015 through 10 September 2015
ER -
ID: 35171618