Microstructure Evolution in 5083 Al-Mg Alloy Exhibiting Low Temperature Superplasticity at 250°C

The relationship among stress, cavities and twinning in the room-temperature bending process of hot-rolled AZ31 Mg alloy sheet was researched. It can be seen that the mount of twins which was tightly affected by stress value increases with the distance to press point. Otherwise, the cavities and twinning which seem totally independent, in fact affect with each other. Some cavities were hindered by twins and can not further grow up. Then, the relationship between slip and twinning was also roughly discussed. The dislocation lines in twins can be thought to release the stress focus and were beneficial for deformation.

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Microstructure evolution of casting Mg alloy AM60B subjected to compression deformation

Transactions of Nonferrous Metals Society of China ◽

10.1016/s1003-6326(10)60188-4 ◽

2008 ◽

Vol 18 ◽

pp. s127-s131

Author(s):

Han-xue CAO ◽

Si-yuan LONG ◽

Guo-qiang YOU ◽

Hui-min LIAO

Keyword(s):

Microstructure Evolution ◽

Mg Alloy ◽

Compression Deformation

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Microstructure evolution during processing and superplastic flow in a high magnesium AlMg alloy

Materials Science and Engineering ◽

10.1016/0025-5416(87)90411-3 ◽

1987 ◽

Vol 93 ◽

pp. 45-55 ◽

Cited By ~ 32

Author(s):

E.-W. Lee ◽

T.R. McNelley

Keyword(s):

Microstructure Evolution ◽

Superplastic Flow ◽

Mg Alloy

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Microstructure, mechanical behavior and low temperature superplasticity of ECAP processed ZM21 Mg alloy

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2015.03.029 ◽

2015 ◽

Vol 638 ◽

pp. 267-276 ◽

Cited By ~ 62

Author(s):

Ehsan Mostaed ◽

Alberto Fabrizi ◽

David Dellasega ◽

Franco Bonollo ◽

Maurizio Vedani

Keyword(s):

Low Temperature ◽

Mechanical Behavior ◽

Mg Alloy

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Investigations on Microstructure Evolution and Deformation Behavior of Aged and Ultrafine Grained Al-Zn-Mg Alloy Subjected to Severe Plastic Deformation

Materials Science Forum ◽

10.4028/www.scientific.net/msf.667-669.253 ◽

2010 ◽

Vol 667-669 ◽

pp. 253-258

Author(s):

Wei Ping Hu ◽

Si Yuan Zhang ◽

Xiao Yu He ◽

Zhen Yang Liu ◽

Rolf Berghammer ◽

...

Keyword(s):

Electron Microscopy ◽

Mechanical Properties ◽

Plastic Deformation ◽

Grain Size ◽

Severe Plastic Deformation ◽

Microstructure Evolution ◽

Deformation Behavior ◽

Deformation Mechanisms ◽

Mg Alloy ◽

Ultrafine Grained

An aged Al-5Zn-1.6Mg alloy with fine η' precipitates was grain refined to ~100 nm grain size by severe plastic deformation (SPD). Microstructure evolution during SPD and mechanical behaviour after SPD of the alloy were characterized by electron microscopy and tensile, compression as well as nanoindentation tests. The influence of η' precipitates on microstructure and mechanical properties of ultrafine grained Al-Zn-Mg alloy is discussed with respect to their effect on dislocation configurations and deformation mechanisms during processing of the alloy.

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