Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy

Hot compression tests of Mg–8Al–1.5Ca–0.2Sr magnesium alloy were performed on the Gleeble-1500 machine at temperatures of 300, 350, 400, and 450 °C and strain rates of 0.01, 0.1 and 1 s−1. The flow stress behavior and microstructural evolution were followed. The work hardening was derived according...

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Bibliographic Details
Main Authors:	Xiao Liu, Luoxing Li, Biwu Zhu
Format:	Article
Language:	English
Published:	KeAi Communications Co., Ltd. 2014-06-01
Series:	Journal of Magnesium and Alloys
Subjects:	Magnesium alloy Work hardening Cellular automata Volume fraction recrystallized Microstructure
Online Access:	http://www.sciencedirect.com/science/article/pii/S2213956714000358

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spelling	doaj-f231d82fc9f34b60a98cb34f4a6588d02021-02-02T05:08:12ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672014-06-012213313910.1016/j.jma.2014.05.001Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloyXiao Liu0Luoxing Li1Biwu Zhu2State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, Hunan, ChinaState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, Hunan, ChinaState Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, Hunan, ChinaHot compression tests of Mg–8Al–1.5Ca–0.2Sr magnesium alloy were performed on the Gleeble-1500 machine at temperatures of 300, 350, 400, and 450 °C and strain rates of 0.01, 0.1 and 1 s−1. The flow stress behavior and microstructural evolution were followed. The work hardening was derived according to the Laasraoui–Jonas model. An improved approach, which considered the influence of yield stress on flow stress and the effect of grain boundary (GB) migration on the evolution of dislocation density during compression, was used to simulate the microstructural evolution, the flow stress and the volume fraction recrystallized of Mg–8Al–1.5Ca–0.2Sr magnesium alloy. The simulated results are in good agreement with experimental results.http://www.sciencedirect.com/science/article/pii/S2213956714000358Magnesium alloyWork hardeningCellular automataVolume fraction recrystallizedMicrostructure
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Xiao Liu Luoxing Li Biwu Zhu
spellingShingle	Xiao Liu Luoxing Li Biwu Zhu Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy Journal of Magnesium and Alloys Magnesium alloy Work hardening Cellular automata Volume fraction recrystallized Microstructure
author_facet	Xiao Liu Luoxing Li Biwu Zhu
author_sort	Xiao Liu
title	Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy
title_short	Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy
title_full	Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy
title_fullStr	Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy
title_full_unstemmed	Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy
title_sort	modeling of the flow stress behavior and microstructural evolution during hot deformation of mg–8al–1.5ca–0.2sr magnesium alloy
publisher	KeAi Communications Co., Ltd.
series	Journal of Magnesium and Alloys
issn	2213-9567
publishDate	2014-06-01
description	Hot compression tests of Mg–8Al–1.5Ca–0.2Sr magnesium alloy were performed on the Gleeble-1500 machine at temperatures of 300, 350, 400, and 450 °C and strain rates of 0.01, 0.1 and 1 s−1. The flow stress behavior and microstructural evolution were followed. The work hardening was derived according to the Laasraoui–Jonas model. An improved approach, which considered the influence of yield stress on flow stress and the effect of grain boundary (GB) migration on the evolution of dislocation density during compression, was used to simulate the microstructural evolution, the flow stress and the volume fraction recrystallized of Mg–8Al–1.5Ca–0.2Sr magnesium alloy. The simulated results are in good agreement with experimental results.
topic	Magnesium alloy Work hardening Cellular automata Volume fraction recrystallized Microstructure
url	http://www.sciencedirect.com/science/article/pii/S2213956714000358
work_keys_str_mv	AT xiaoliu modelingoftheflowstressbehaviorandmicrostructuralevolutionduringhotdeformationofmg8al15ca02srmagnesiumalloy AT luoxingli modelingoftheflowstressbehaviorandmicrostructuralevolutionduringhotdeformationofmg8al15ca02srmagnesiumalloy AT biwuzhu modelingoftheflowstressbehaviorandmicrostructuralevolutionduringhotdeformationofmg8al15ca02srmagnesiumalloy
_version_	1724304251495120896

Modeling of the flow stress behavior and microstructural evolution during hot deformation of Mg–8Al–1.5Ca–0.2Sr magnesium alloy

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