Experimental and numerical analyses of magnesium alloy hot workability
Due to their hexagonal crystal structure, magnesium alloys have relatively low workability at room temperature. In this study, the hot workability behavior of cast-extruded AZ31B magnesium alloy is studied through hot compression testing, numerical modeling and microstructural analyses. Hot deformat...
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doaj-24d282a98ff94c9ea19745a6e9b290e82021-02-02T02:52:56ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672016-12-014429530110.1016/j.jma.2016.10.004Experimental and numerical analyses of magnesium alloy hot workabilityF. Abbassi0M. Srinivasan1C. Loganathan2R. Narayanasamy3M. Gupta4Mechanical Engineering Department, College of Engineering, Dhofar University, P.O. Box 2509, 211 Salalah, OmanMechanical Engineering Department, College of Engineering, Dhofar University, P.O. Box 2509, 211 Salalah, OmanDepartment of Mechanical Engineering, Chartered Institute of Technology, Abu Road, Sirohi, Rajasthan 307 510, IndiaDepartment of Production Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620 015, IndiaDepartment of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117 576, SingaporeDue to their hexagonal crystal structure, magnesium alloys have relatively low workability at room temperature. In this study, the hot workability behavior of cast-extruded AZ31B magnesium alloy is studied through hot compression testing, numerical modeling and microstructural analyses. Hot deformation tests are performed at temperatures of 250 °C to 400 °C under strain rates of 0.01 to 1.0 s−1. Transmission electron microscopy is used to reveal the presence of dynamic recrystallization (DRX), dynamic recovery (DRY), cracks and shear bands. To predict plastic instabilities during hot compression tests of AZ31B magnesium alloy, the authors use Johnson–Cook damage model in a 3D finite element simulation. The optimal hot workability of magnesium alloy is found at a temperature (T) of 400 °C and strain rate (ε˙) of 0.01 s−1. Stability is found at a lower strain rate, and instability is found at a higher strain rate.http://www.sciencedirect.com/science/article/pii/S2213956716300548AZ31B magnesium alloyHot workabilityDamagePlastic instabilityTEM analysisFEM |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
F. Abbassi M. Srinivasan C. Loganathan R. Narayanasamy M. Gupta |
spellingShingle |
F. Abbassi M. Srinivasan C. Loganathan R. Narayanasamy M. Gupta Experimental and numerical analyses of magnesium alloy hot workability Journal of Magnesium and Alloys AZ31B magnesium alloy Hot workability Damage Plastic instability TEM analysis FEM |
author_facet |
F. Abbassi M. Srinivasan C. Loganathan R. Narayanasamy M. Gupta |
author_sort |
F. Abbassi |
title |
Experimental and numerical analyses of magnesium alloy hot workability |
title_short |
Experimental and numerical analyses of magnesium alloy hot workability |
title_full |
Experimental and numerical analyses of magnesium alloy hot workability |
title_fullStr |
Experimental and numerical analyses of magnesium alloy hot workability |
title_full_unstemmed |
Experimental and numerical analyses of magnesium alloy hot workability |
title_sort |
experimental and numerical analyses of magnesium alloy hot workability |
publisher |
KeAi Communications Co., Ltd. |
series |
Journal of Magnesium and Alloys |
issn |
2213-9567 |
publishDate |
2016-12-01 |
description |
Due to their hexagonal crystal structure, magnesium alloys have relatively low workability at room temperature. In this study, the hot workability behavior of cast-extruded AZ31B magnesium alloy is studied through hot compression testing, numerical modeling and microstructural analyses. Hot deformation tests are performed at temperatures of 250 °C to 400 °C under strain rates of 0.01 to 1.0 s−1. Transmission electron microscopy is used to reveal the presence of dynamic recrystallization (DRX), dynamic recovery (DRY), cracks and shear bands. To predict plastic instabilities during hot compression tests of AZ31B magnesium alloy, the authors use Johnson–Cook damage model in a 3D finite element simulation. The optimal hot workability of magnesium alloy is found at a temperature (T) of 400 °C and strain rate (ε˙) of 0.01 s−1. Stability is found at a lower strain rate, and instability is found at a higher strain rate. |
topic |
AZ31B magnesium alloy Hot workability Damage Plastic instability TEM analysis FEM |
url |
http://www.sciencedirect.com/science/article/pii/S2213956716300548 |
work_keys_str_mv |
AT fabbassi experimentalandnumericalanalysesofmagnesiumalloyhotworkability AT msrinivasan experimentalandnumericalanalysesofmagnesiumalloyhotworkability AT cloganathan experimentalandnumericalanalysesofmagnesiumalloyhotworkability AT rnarayanasamy experimentalandnumericalanalysesofmagnesiumalloyhotworkability AT mgupta experimentalandnumericalanalysesofmagnesiumalloyhotworkability |
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