Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density

Creep Age Forming (CAF), as a contemporary alloy forming method which integrates heat treatment strengthening with the forming manufacturing process, has been employed to manufacture large integral panel components with high-performance and precise. Even so, the efficiency and accuracy of CAF can be...

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Main Authors: Yuan Liu, Minghao Li, Guoqing Chen, Yufei Zu, Wenlong Zhou, Xuesong Fu
Format: Article
Language:English
Published: Elsevier 2025-03-01
Series:Journal of Materials Research and Technology
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Online Access:http://www.sciencedirect.com/science/article/pii/S2238785425001863
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author Yuan Liu
Minghao Li
Guoqing Chen
Yufei Zu
Wenlong Zhou
Xuesong Fu
author_facet Yuan Liu
Minghao Li
Guoqing Chen
Yufei Zu
Wenlong Zhou
Xuesong Fu
author_sort Yuan Liu
collection DOAJ
description Creep Age Forming (CAF), as a contemporary alloy forming method which integrates heat treatment strengthening with the forming manufacturing process, has been employed to manufacture large integral panel components with high-performance and precise. Even so, the efficiency and accuracy of CAF can be further improved via introduction of electric pulse during the production. In this study, the creep aging behavior of the 1420 Al–Li–Mg–Zr alloy through electric pulse creep aging (ECA) and conventional creep aging (CCA) processes across varying temperatures had been investigated. The results highlight the significant impact of electrical pulses on creep properties, mechanical traits, and microstructural evolution during creep aging. ECA samples demonstrate 1.65 to 2.48 times higher creep strain compared to CCA samples at different temperature. The introduction of electrical pulses curtails the activation energy (Q) of the alloy from 93.129 to 86.773 kJ mol⁻1. Furthermore, dislocation density, assessed using the Williamson–Hall method, and dimensions of the δ′ phase (Al3Li), determined by Nano Measurer 1.2 software from transmission electron microscopy images, are found higher in ECA samples at the same temperature, contributing to enhanced yield strength. Calculations identify order hardening as the primary strengthening mechanism, complemented by dislocation strengthening in creep-aged alloy, aligning with expectations.
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institution Kabale University
issn 2238-7854
language English
publishDate 2025-03-01
publisher Elsevier
record_format Article
series Journal of Materials Research and Technology
spelling doaj-art-9eed85ff21494cd9b121ed9f2a6d05722025-01-30T05:14:21ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013523042314Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current densityYuan Liu0Minghao Li1Guoqing Chen2Yufei Zu3Wenlong Zhou4Xuesong Fu5School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116000, China; Dalian Technology (Yingkou) New Material Engineering Center Co., LTD, Yingkou, 115000, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian, 116000, China; Dalian Technology (Yingkou) New Material Engineering Center Co., LTD, Yingkou, 115000, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian, 116000, China; Dalian Technology (Yingkou) New Material Engineering Center Co., LTD, Yingkou, 115000, China; Corresponding author. School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China.School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116000, China; Dalian Technology (Yingkou) New Material Engineering Center Co., LTD, Yingkou, 115000, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian, 116000, China; Dalian Technology (Yingkou) New Material Engineering Center Co., LTD, Yingkou, 115000, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian, 116000, China; Dalian Technology (Yingkou) New Material Engineering Center Co., LTD, Yingkou, 115000, ChinaCreep Age Forming (CAF), as a contemporary alloy forming method which integrates heat treatment strengthening with the forming manufacturing process, has been employed to manufacture large integral panel components with high-performance and precise. Even so, the efficiency and accuracy of CAF can be further improved via introduction of electric pulse during the production. In this study, the creep aging behavior of the 1420 Al–Li–Mg–Zr alloy through electric pulse creep aging (ECA) and conventional creep aging (CCA) processes across varying temperatures had been investigated. The results highlight the significant impact of electrical pulses on creep properties, mechanical traits, and microstructural evolution during creep aging. ECA samples demonstrate 1.65 to 2.48 times higher creep strain compared to CCA samples at different temperature. The introduction of electrical pulses curtails the activation energy (Q) of the alloy from 93.129 to 86.773 kJ mol⁻1. Furthermore, dislocation density, assessed using the Williamson–Hall method, and dimensions of the δ′ phase (Al3Li), determined by Nano Measurer 1.2 software from transmission electron microscopy images, are found higher in ECA samples at the same temperature, contributing to enhanced yield strength. Calculations identify order hardening as the primary strengthening mechanism, complemented by dislocation strengthening in creep-aged alloy, aligning with expectations.http://www.sciencedirect.com/science/article/pii/S22387854250018631420 alloyCreep agingElectrical pulsesDislocation densityδ′ phase
spellingShingle Yuan Liu
Minghao Li
Guoqing Chen
Yufei Zu
Wenlong Zhou
Xuesong Fu
Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density
Journal of Materials Research and Technology
1420 alloy
Creep aging
Electrical pulses
Dislocation density
δ′ phase
title Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density
title_full Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density
title_fullStr Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density
title_full_unstemmed Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density
title_short Pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density
title_sort pulse current assisted regulation for creep aging behavior of 1420 alloy under different current density
topic 1420 alloy
Creep aging
Electrical pulses
Dislocation density
δ′ phase
url http://www.sciencedirect.com/science/article/pii/S2238785425001863
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AT minghaoli pulsecurrentassistedregulationforcreepagingbehaviorof1420alloyunderdifferentcurrentdensity
AT guoqingchen pulsecurrentassistedregulationforcreepagingbehaviorof1420alloyunderdifferentcurrentdensity
AT yufeizu pulsecurrentassistedregulationforcreepagingbehaviorof1420alloyunderdifferentcurrentdensity
AT wenlongzhou pulsecurrentassistedregulationforcreepagingbehaviorof1420alloyunderdifferentcurrentdensity
AT xuesongfu pulsecurrentassistedregulationforcreepagingbehaviorof1420alloyunderdifferentcurrentdensity