Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity

Ali Alhamidi; Zenji Horita

doi:10.1007/s10853-014-8362-5

Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity

Ali Alhamidi, Zenji Horita

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

An Al-6 %Cu-0.4 %Zr alloy was processed by high-pressure torsion to produce an ultrafine-grained structure with a grain size of ~200 nm at the steady-state level where the hardness remains constant with straining. Tensile testing showed that a maximum elongation of ~530 % was attained at 673 K with an initial strain rate of 1 × 10^-3 s^-1. Evaluation of the strain-rate sensitivity and the activation energy for the deformation confirmed that grain boundary sliding through grain boundary diffusion is the rate-controlling process for the superplastic deformation.

Original language	English
Pages (from-to)	6689-6695
Number of pages	7
Journal	Journal of Materials Science
Volume	49
Issue number	19
DOIs	https://doi.org/10.1007/s10853-014-8362-5
Publication status	Published - Oct 2014

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1007/s10853-014-8362-5

Cite this

@article{d50dc0af18454a89adccc4a406d62cff,

title = "Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity",

abstract = "An Al-6 %Cu-0.4 %Zr alloy was processed by high-pressure torsion to produce an ultrafine-grained structure with a grain size of ~200 nm at the steady-state level where the hardness remains constant with straining. Tensile testing showed that a maximum elongation of ~530 % was attained at 673 K with an initial strain rate of 1 × 10-3 s-1. Evaluation of the strain-rate sensitivity and the activation energy for the deformation confirmed that grain boundary sliding through grain boundary diffusion is the rate-controlling process for the superplastic deformation.",

author = "Ali Alhamidi and Zenji Horita",

note = "Funding Information: Acknowledgments We are grateful to Mr. Shinsuke Nakashima for helpful assistance. One of the authors (AA) would like to thank Indonesian Government for a PhD scholarship through the Directorate of Higher Education Program (DGHE). This work was supported in part by the Light Metals Educational Foundation of Japan and in part by a Grant-in-Aid for Scientific Research from the MEXT, Japan, in Innovative Areas {\textquoteleft}{\textquoteleft}Bulk Nanostructured Metals{\textquoteright}{\textquoteright} 22102004.",

year = "2014",

month = oct,

doi = "10.1007/s10853-014-8362-5",

language = "English",

volume = "49",

pages = "6689--6695",

journal = "Journal of Materials Science",

issn = "0022-2461",

publisher = "Springer Netherlands",

number = "19",

}

TY - JOUR

T1 - Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity

AU - Alhamidi, Ali

AU - Horita, Zenji

N1 - Funding Information: Acknowledgments We are grateful to Mr. Shinsuke Nakashima for helpful assistance. One of the authors (AA) would like to thank Indonesian Government for a PhD scholarship through the Directorate of Higher Education Program (DGHE). This work was supported in part by the Light Metals Educational Foundation of Japan and in part by a Grant-in-Aid for Scientific Research from the MEXT, Japan, in Innovative Areas ‘‘Bulk Nanostructured Metals’’ 22102004.

PY - 2014/10

Y1 - 2014/10

N2 - An Al-6 %Cu-0.4 %Zr alloy was processed by high-pressure torsion to produce an ultrafine-grained structure with a grain size of ~200 nm at the steady-state level where the hardness remains constant with straining. Tensile testing showed that a maximum elongation of ~530 % was attained at 673 K with an initial strain rate of 1 × 10-3 s-1. Evaluation of the strain-rate sensitivity and the activation energy for the deformation confirmed that grain boundary sliding through grain boundary diffusion is the rate-controlling process for the superplastic deformation.

AB - An Al-6 %Cu-0.4 %Zr alloy was processed by high-pressure torsion to produce an ultrafine-grained structure with a grain size of ~200 nm at the steady-state level where the hardness remains constant with straining. Tensile testing showed that a maximum elongation of ~530 % was attained at 673 K with an initial strain rate of 1 × 10-3 s-1. Evaluation of the strain-rate sensitivity and the activation energy for the deformation confirmed that grain boundary sliding through grain boundary diffusion is the rate-controlling process for the superplastic deformation.

UR - http://www.scopus.com/inward/record.url?scp=84904719856&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904719856&partnerID=8YFLogxK

U2 - 10.1007/s10853-014-8362-5

DO - 10.1007/s10853-014-8362-5

M3 - Article

AN - SCOPUS:84904719856

SN - 0022-2461

VL - 49

SP - 6689

EP - 6695

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 19

ER -

Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this