Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight traffic

Isothermal compression tests of 7A21 aluminum alloy were carried out on a Gleeble-3500 thermal simulator, and the stress-strain curves were obtained at temperatures ranging from 350 to 500 °C and strain rates ranging from 0.01 to 10 s ^−1 . The Arrhenius-type constitutive models with/without strain...

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Main Authors: Hao Xindi, Ren Dong, Dong Juan, Haiming Zong, Lv Zhengfeng
Format: Article
Language:English
Published: IOP Publishing 2021-01-01
Series:Materials Research Express
Subjects:
Online Access:https://doi.org/10.1088/2053-1591/abdc10
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author Hao Xindi
Ren Dong
Dong Juan
Haiming Zong
Lv Zhengfeng
author_facet Hao Xindi
Ren Dong
Dong Juan
Haiming Zong
Lv Zhengfeng
author_sort Hao Xindi
collection DOAJ
description Isothermal compression tests of 7A21 aluminum alloy were carried out on a Gleeble-3500 thermal simulator, and the stress-strain curves were obtained at temperatures ranging from 350 to 500 °C and strain rates ranging from 0.01 to 10 s ^−1 . The Arrhenius-type constitutive models with/without strain compensation were established to predict hot deformation mechanical behavior of the alloy based on friction and temperature corrected stress-strain curves, respectively. The model with strain compensation shows a higher prediction accuracy by calculating the average absolute relative error and correlation coefficient. The hot processing maps at different strains were constructed based on the dynamic material model (DMM). The safety strain rates map, a new form of processing map which reflects the variation of critical safety strain rates with the deformation temperatures and true strains, was generated to simplify the acquisition of safety zones throughout the whole deformation process.
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spelling doaj.art-fb126319ae0c46dd858928389b0c74ec2023-08-09T15:56:26ZengIOP PublishingMaterials Research Express2053-15912021-01-018101653210.1088/2053-1591/abdc10Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight trafficHao Xindi0Ren Dong1Dong Juan2Haiming Zong3https://orcid.org/0000-0002-4913-0661Lv Zhengfeng4College of Engineering, Yantai Nanshan University , Yantai 265713, Shandong, People’s Republic of ChinaCollege of Engineering, Yantai Nanshan University , Yantai 265713, Shandong, People’s Republic of ChinaCollege of Engineering, Yantai Nanshan University , Yantai 265713, Shandong, People’s Republic of ChinaCollege of Engineering, Yantai Nanshan University , Yantai 265713, Shandong, People’s Republic of ChinaNational Engineering Research Center for Plastic Working of Aluminum Alloys, Shandong Nanshan Aluminum Co Ltd, Yantai 265700, Shandong, People’s Republic of ChinaIsothermal compression tests of 7A21 aluminum alloy were carried out on a Gleeble-3500 thermal simulator, and the stress-strain curves were obtained at temperatures ranging from 350 to 500 °C and strain rates ranging from 0.01 to 10 s ^−1 . The Arrhenius-type constitutive models with/without strain compensation were established to predict hot deformation mechanical behavior of the alloy based on friction and temperature corrected stress-strain curves, respectively. The model with strain compensation shows a higher prediction accuracy by calculating the average absolute relative error and correlation coefficient. The hot processing maps at different strains were constructed based on the dynamic material model (DMM). The safety strain rates map, a new form of processing map which reflects the variation of critical safety strain rates with the deformation temperatures and true strains, was generated to simplify the acquisition of safety zones throughout the whole deformation process.https://doi.org/10.1088/2053-1591/abdc10Al-Zn-Mg-Cu aluminum alloyautomotive lightweightconstitutive equationhot processing mapsafety strain rates map
spellingShingle Hao Xindi
Ren Dong
Dong Juan
Haiming Zong
Lv Zhengfeng
Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight traffic
Materials Research Express
Al-Zn-Mg-Cu aluminum alloy
automotive lightweight
constitutive equation
hot processing map
safety strain rates map
title Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight traffic
title_full Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight traffic
title_fullStr Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight traffic
title_full_unstemmed Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight traffic
title_short Constitutive behavior and novel characterization of hot deformation of Al-Zn-Mg-Cu aluminum alloy for lightweight traffic
title_sort constitutive behavior and novel characterization of hot deformation of al zn mg cu aluminum alloy for lightweight traffic
topic Al-Zn-Mg-Cu aluminum alloy
automotive lightweight
constitutive equation
hot processing map
safety strain rates map
url https://doi.org/10.1088/2053-1591/abdc10
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AT haimingzong constitutivebehaviorandnovelcharacterizationofhotdeformationofalznmgcualuminumalloyforlightweighttraffic
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