TY - GEN
T1 - Severe plastic deformation under high pressure for production of superplastic materials
AU - Horita, Zenji
N1 - Publisher Copyright:
© 2016 Trans Tech Publications, Switzerland.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2016
Y1 - 2016
N2 - Grain refinement is an important prerequisite for advent of superplasticity. In particular, as the grain size is smaller, the superplasticity appears at higher strain rates and lower temperatures. Severe plastic deformation (SPD) is a useful process for achieving significant grain refinement. This presentation shows that applicability of the SPD process is enhanced when it is operated under high pressure through high-pressure torsion (HPT) and high-pressure sliding (HPS). It is demonstrated that commercially available conventional alloys but less ductile alloys such as Mg alloys, age-hardenable high-strength Al alloys (A2024, A7075) and Ti alloys become superplastic after processing by HPT or HPS.
AB - Grain refinement is an important prerequisite for advent of superplasticity. In particular, as the grain size is smaller, the superplasticity appears at higher strain rates and lower temperatures. Severe plastic deformation (SPD) is a useful process for achieving significant grain refinement. This presentation shows that applicability of the SPD process is enhanced when it is operated under high pressure through high-pressure torsion (HPT) and high-pressure sliding (HPS). It is demonstrated that commercially available conventional alloys but less ductile alloys such as Mg alloys, age-hardenable high-strength Al alloys (A2024, A7075) and Ti alloys become superplastic after processing by HPT or HPS.
UR - http://www.scopus.com/inward/record.url?scp=84958093658&partnerID=8YFLogxK
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U2 - 10.4028/www.scientific.net/MSF.838-839.287
DO - 10.4028/www.scientific.net/MSF.838-839.287
M3 - Conference contribution
AN - SCOPUS:84958093658
SN - 9783038356721
T3 - Materials Science Forum
SP - 287
EP - 293
BT - Superplasticity in Advanced Materials, ICSAM 2015
A2 - Sato, Eiichi
A2 - Itoh, Goroh
A2 - Kobayashi, Junya
A2 - Takayama, Yoshimasa
A2 - Kitazono, Koichi
A2 - Morita, Koji
A2 - Itoi, Takaomi
PB - Trans Tech Publications Ltd
T2 - 12th International Conference on Superplasticity in Advanced Materials, ICSAM 2015
Y2 - 7 September 2015 through 11 September 2015
ER -