Developing superplastic properties in an aluminum alloy through severe plastic deformation

Sungwon Lee; Patrick B. Berbon; Minoru Furukawa; Zenji Horita; Minoru Nemoto; Nikolai K. Tsenev; Ruslan Z. Valiev; Terence G. Langdon

doi:10.1016/S0921-5093(99)00470-0

Developing superplastic properties in an aluminum alloy through severe plastic deformation

Sungwon Lee, Patrick B. Berbon, Minoru Furukawa, Zenji Horita, Minoru Nemoto, Nikolai K. Tsenev, Ruslan Z. Valiev, Terence G. Langdon

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123 Citations (Scopus)

Abstract

Equal-channel angular (ECA) pressing is a processing procedure which subjects a material to severe plastic deformation. Tests were conducted on a commercial cast aluminum alloy to evaluate the properties associated with samples subjected to three different ECA pressing procedures. The results show that all three procedures lead to an ultrafine microstructure and each procedure is capable of producing samples which exhibit high strain rate superplasticity. Optimum superplastic properties were achieved in samples subjected to ECA pressing to a strain of ~12. Under these conditions, the measured elongations to failure at a temperature of 673 K were 1210 and 950% at strain rates of 10^-1 and 1 s^-1, respectively.

Original language	English
Pages (from-to)	63-72
Number of pages	10
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	272
Issue number	1
DOIs	https://doi.org/10.1016/S0921-5093(99)00470-0
Publication status	Published - Nov 15 1999

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Developing superplastic properties in an aluminum alloy through severe plastic deformation",

abstract = "Equal-channel angular (ECA) pressing is a processing procedure which subjects a material to severe plastic deformation. Tests were conducted on a commercial cast aluminum alloy to evaluate the properties associated with samples subjected to three different ECA pressing procedures. The results show that all three procedures lead to an ultrafine microstructure and each procedure is capable of producing samples which exhibit high strain rate superplasticity. Optimum superplastic properties were achieved in samples subjected to ECA pressing to a strain of ~12. Under these conditions, the measured elongations to failure at a temperature of 673 K were 1210 and 950% at strain rates of 10-1 and 1 s-1, respectively.",

author = "Sungwon Lee and Berbon, {Patrick B.} and Minoru Furukawa and Zenji Horita and Minoru Nemoto and Tsenev, {Nikolai K.} and Valiev, {Ruslan Z.} and Langdon, {Terence G.}",

note = "Funding Information: We thank Mr. Takeshi Fujita for assistance with the SIM observations. This work was supported in part by the Light Metals Educational Foundation of Japan, in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan, in part by the Japan Society for the Promotion of Science, in part by the National Science Foundation of the United States under Grants No. DMR-9625969 and INT-9602919 and in part by the US Army Research Office under Grants 68171-98-M-5642 and DAAH04-96-1-0332.",

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doi = "10.1016/S0921-5093(99)00470-0",

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T1 - Developing superplastic properties in an aluminum alloy through severe plastic deformation

AU - Lee, Sungwon

AU - Berbon, Patrick B.

AU - Furukawa, Minoru

AU - Horita, Zenji

AU - Nemoto, Minoru

AU - Tsenev, Nikolai K.

AU - Valiev, Ruslan Z.

AU - Langdon, Terence G.

N1 - Funding Information: We thank Mr. Takeshi Fujita for assistance with the SIM observations. This work was supported in part by the Light Metals Educational Foundation of Japan, in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan, in part by the Japan Society for the Promotion of Science, in part by the National Science Foundation of the United States under Grants No. DMR-9625969 and INT-9602919 and in part by the US Army Research Office under Grants 68171-98-M-5642 and DAAH04-96-1-0332.

PY - 1999/11/15

Y1 - 1999/11/15

N2 - Equal-channel angular (ECA) pressing is a processing procedure which subjects a material to severe plastic deformation. Tests were conducted on a commercial cast aluminum alloy to evaluate the properties associated with samples subjected to three different ECA pressing procedures. The results show that all three procedures lead to an ultrafine microstructure and each procedure is capable of producing samples which exhibit high strain rate superplasticity. Optimum superplastic properties were achieved in samples subjected to ECA pressing to a strain of ~12. Under these conditions, the measured elongations to failure at a temperature of 673 K were 1210 and 950% at strain rates of 10-1 and 1 s-1, respectively.

AB - Equal-channel angular (ECA) pressing is a processing procedure which subjects a material to severe plastic deformation. Tests were conducted on a commercial cast aluminum alloy to evaluate the properties associated with samples subjected to three different ECA pressing procedures. The results show that all three procedures lead to an ultrafine microstructure and each procedure is capable of producing samples which exhibit high strain rate superplasticity. Optimum superplastic properties were achieved in samples subjected to ECA pressing to a strain of ~12. Under these conditions, the measured elongations to failure at a temperature of 673 K were 1210 and 950% at strain rates of 10-1 and 1 s-1, respectively.

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Developing superplastic properties in an aluminum alloy through severe plastic deformation

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