Superplastic behavior of coarse-grained Al-Mg-Zn alloys

Marco Antonio García-Bernal; David Hernandez-Silva; Victor Sauce-Rangel

doi:10.1007/s10853-006-0368-1

Superplastic behavior of coarse-grained Al-Mg-Zn alloys

Marco Antonio García-Bernal, David Hernandez-Silva, Victor Sauce-Rangel

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

7 Scopus citations

Abstract

In the present study, the superplastic behavior of five Al-Mg-Zn alloys in coarse grain size condition has been studied. The alloys were melted, cast into ingots and hot rolled. The grain size of the rolled samples was 69, 45, 40, 30 and 35μm. Tensile test specimens were machined from the hot rolled plate in the rolling direction. Strain-rate-change (SCR) tests at temperatures between 300 and 450°C and strain rates between 1×10^-4 and 1×10^-1s^-1 were carried out to determine the strain rate sensitivity of the flow stress. Finally, elongation-to-failure tests were conducted at those temperatures and strain rates, where the alloys showed high strain rate sensitivity. A maximal elongation of 400% was obtained for the 3.89wt.% Zn alloy. The results are explained in terms of solute drag creep as the principal deformation mechanism.

Original language	English
Pages (from-to)	3958-3963
Number of pages	6
Journal	Journal of Materials Science
Volume	42
Issue number	11
DOIs	https://doi.org/10.1007/s10853-006-0368-1
State	Published - Jun 2007
Externally published	Yes

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title = "Superplastic behavior of coarse-grained Al-Mg-Zn alloys",

abstract = "In the present study, the superplastic behavior of five Al-Mg-Zn alloys in coarse grain size condition has been studied. The alloys were melted, cast into ingots and hot rolled. The grain size of the rolled samples was 69, 45, 40, 30 and 35μm. Tensile test specimens were machined from the hot rolled plate in the rolling direction. Strain-rate-change (SCR) tests at temperatures between 300 and 450°C and strain rates between 1×10-4 and 1×10-1s-1 were carried out to determine the strain rate sensitivity of the flow stress. Finally, elongation-to-failure tests were conducted at those temperatures and strain rates, where the alloys showed high strain rate sensitivity. A maximal elongation of 400% was obtained for the 3.89wt.% Zn alloy. The results are explained in terms of solute drag creep as the principal deformation mechanism.",

author = "Garc{\'i}a-Bernal, {Marco Antonio} and David Hernandez-Silva and Victor Sauce-Rangel",

note = "Funding Information: Acknowledgements This work has been supported by Instituto Polit{\'e}cnico Nacional and CONACYT (M{\'e}xico). One of the authors (DHS) is recipient of COFAA-IPN and SNI fellowship.",

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doi = "10.1007/s10853-006-0368-1",

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T1 - Superplastic behavior of coarse-grained Al-Mg-Zn alloys

AU - García-Bernal, Marco Antonio

AU - Hernandez-Silva, David

AU - Sauce-Rangel, Victor

N1 - Funding Information: Acknowledgements This work has been supported by Instituto Politécnico Nacional and CONACYT (México). One of the authors (DHS) is recipient of COFAA-IPN and SNI fellowship.

PY - 2007/6

Y1 - 2007/6

N2 - In the present study, the superplastic behavior of five Al-Mg-Zn alloys in coarse grain size condition has been studied. The alloys were melted, cast into ingots and hot rolled. The grain size of the rolled samples was 69, 45, 40, 30 and 35μm. Tensile test specimens were machined from the hot rolled plate in the rolling direction. Strain-rate-change (SCR) tests at temperatures between 300 and 450°C and strain rates between 1×10-4 and 1×10-1s-1 were carried out to determine the strain rate sensitivity of the flow stress. Finally, elongation-to-failure tests were conducted at those temperatures and strain rates, where the alloys showed high strain rate sensitivity. A maximal elongation of 400% was obtained for the 3.89wt.% Zn alloy. The results are explained in terms of solute drag creep as the principal deformation mechanism.

AB - In the present study, the superplastic behavior of five Al-Mg-Zn alloys in coarse grain size condition has been studied. The alloys were melted, cast into ingots and hot rolled. The grain size of the rolled samples was 69, 45, 40, 30 and 35μm. Tensile test specimens were machined from the hot rolled plate in the rolling direction. Strain-rate-change (SCR) tests at temperatures between 300 and 450°C and strain rates between 1×10-4 and 1×10-1s-1 were carried out to determine the strain rate sensitivity of the flow stress. Finally, elongation-to-failure tests were conducted at those temperatures and strain rates, where the alloys showed high strain rate sensitivity. A maximal elongation of 400% was obtained for the 3.89wt.% Zn alloy. The results are explained in terms of solute drag creep as the principal deformation mechanism.

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U2 - 10.1007/s10853-006-0368-1

DO - 10.1007/s10853-006-0368-1

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VL - 42

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EP - 3963

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 11

ER -

Superplastic behavior of coarse-grained Al-Mg-Zn alloys

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