Superplastic behavior of an Al-Mg alloy at elevated temperatures

R. Kaibyshev; F. Musin; D. R. Lesuer; T. G. Nieh

doi:10.1016/S0921-5093(02)00276-9

Superplastic behavior of an Al-Mg alloy at elevated temperatures

R. Kaibyshev
, F. Musin
, D. R. Lesuer
, T. G. Nieh

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

149 Citations (Scopus)

Abstract

The superplastic properties and microstructural evolution of a 0.2% Zr and 1.6% Mn modified 5083 aluminum alloy with an initial grain size of 6.2 μm were examined at strain rates ranging from 10^-5 to 10^-1 s^-1 in the temperature interval 500-580 °C. The maximum elongation-to-failure of 1150% was found at 570 °C, which is near the solidus temperature of 572 °C, and an initial strain rate of 2.8 × 10^-3 s^-1. The corresponding strain rate sensitivity coefficient, m, was about 0.6. It was shown that increasing the temperature from 550 to 570 °C results in reduced cavitation and expanding the optimal interval of superplasticity toward lower strain rates due to the disappearance of the threshold stress. The influence of temperature on the mechanisms of superplastic deformation is discussed. © 2002 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	169-177
Journal	Materials Science and Engineering A
Volume	342
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(02)00276-9
Publication status	Published - 15 Feb 2003
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Aluminum alloy
Grain boundary sliding
Microstrutural evolution
Superplasticity
Threshold stress

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title = "Superplastic behavior of an Al-Mg alloy at elevated temperatures",

abstract = "The superplastic properties and microstructural evolution of a 0.2\% Zr and 1.6\% Mn modified 5083 aluminum alloy with an initial grain size of 6.2 μm were examined at strain rates ranging from 10-5 to 10-1 s-1 in the temperature interval 500-580 °C. The maximum elongation-to-failure of 1150\% was found at 570 °C, which is near the solidus temperature of 572 °C, and an initial strain rate of 2.8 × 10-3 s-1. The corresponding strain rate sensitivity coefficient, m, was about 0.6. It was shown that increasing the temperature from 550 to 570 °C results in reduced cavitation and expanding the optimal interval of superplasticity toward lower strain rates due to the disappearance of the threshold stress. The influence of temperature on the mechanisms of superplastic deformation is discussed. {\textcopyright} 2002 Elsevier Science B.V. All rights reserved.",

keywords = "Aluminum alloy, Grain boundary sliding, Microstrutural evolution, Superplasticity, Threshold stress",

author = "R. Kaibyshev and F. Musin and Lesuer, \{D. R.\} and Nieh, \{T. G.\}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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T1 - Superplastic behavior of an Al-Mg alloy at elevated temperatures

AU - Kaibyshev, R.

AU - Musin, F.

AU - Lesuer, D. R.

AU - Nieh, T. G.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2003/2/15

Y1 - 2003/2/15

N2 - The superplastic properties and microstructural evolution of a 0.2% Zr and 1.6% Mn modified 5083 aluminum alloy with an initial grain size of 6.2 μm were examined at strain rates ranging from 10-5 to 10-1 s-1 in the temperature interval 500-580 °C. The maximum elongation-to-failure of 1150% was found at 570 °C, which is near the solidus temperature of 572 °C, and an initial strain rate of 2.8 × 10-3 s-1. The corresponding strain rate sensitivity coefficient, m, was about 0.6. It was shown that increasing the temperature from 550 to 570 °C results in reduced cavitation and expanding the optimal interval of superplasticity toward lower strain rates due to the disappearance of the threshold stress. The influence of temperature on the mechanisms of superplastic deformation is discussed. © 2002 Elsevier Science B.V. All rights reserved.

AB - The superplastic properties and microstructural evolution of a 0.2% Zr and 1.6% Mn modified 5083 aluminum alloy with an initial grain size of 6.2 μm were examined at strain rates ranging from 10-5 to 10-1 s-1 in the temperature interval 500-580 °C. The maximum elongation-to-failure of 1150% was found at 570 °C, which is near the solidus temperature of 572 °C, and an initial strain rate of 2.8 × 10-3 s-1. The corresponding strain rate sensitivity coefficient, m, was about 0.6. It was shown that increasing the temperature from 550 to 570 °C results in reduced cavitation and expanding the optimal interval of superplasticity toward lower strain rates due to the disappearance of the threshold stress. The influence of temperature on the mechanisms of superplastic deformation is discussed. © 2002 Elsevier Science B.V. All rights reserved.

KW - Aluminum alloy

KW - Grain boundary sliding

KW - Microstrutural evolution

KW - Superplasticity

KW - Threshold stress

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U2 - 10.1016/S0921-5093(02)00276-9

DO - 10.1016/S0921-5093(02)00276-9

M3 - RGC 21 - Publication in refereed journal

SN - 0921-5093

VL - 342

SP - 169

EP - 177

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

IS - 1-2

ER -

Superplastic behavior of an Al-Mg alloy at elevated temperatures

Abstract

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