Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions

Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions

Through high-resolution electron microscopy, stacking faults (SFs) due to Frank partial dislocations were found in an aluminum alloy following deformation with low strain and strain rate, while also remaining stable during artificial aging. Extrinsic stacking faults were found surrounded by dislocat...

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Main Authors: Sijie Li, Hongyun Luo, Hui Wang, Pingwei Xu, Jun Luo, Chu Liu, Tao Zhang
Format: Article
Language:English
Published: MDPI AG 2017-12-01
Series:Crystals
Subjects:
stacking faults
frank partial dislocation
precipitates
vacancies
Online Access:https://www.mdpi.com/2073-4352/7/12/375
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spelling doaj-a9a655069f6c4dbda562a761cd498bea2020-11-25T01:04:45ZengMDPI AGCrystals2073-43522017-12-0171237510.3390/cryst7120375cryst7120375Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation InteractionsSijie Li0Hongyun Luo1Hui Wang2Pingwei Xu3Jun Luo4Chu Liu5Tao Zhang6Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaKey Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaKey Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaKey Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaKey Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaKey Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaKey Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaThrough high-resolution electron microscopy, stacking faults (SFs) due to Frank partial dislocations were found in an aluminum alloy following deformation with low strain and strain rate, while also remaining stable during artificial aging. Extrinsic stacking faults were found surrounded by dislocation areas and precipitates. An intrinsic stacking fault was found between two Guinier-Preston II (GP II) zones when the distance of the two GP II zones was 2 nm. Defects (precipitates and dislocations) are considered to have an influence on the formation of the SFs, as their appearance may cause local strain and promote the gathering of vacancies to lower the energy.https://www.mdpi.com/2073-4352/7/12/375stacking faultsfrank partial dislocationprecipitatesvacancies
collection DOAJ
language English
format Article
sources DOAJ
author Sijie Li
Hongyun Luo
Hui Wang
Pingwei Xu
Jun Luo
Chu Liu
Tao Zhang
spellingShingle Sijie Li
Hongyun Luo
Hui Wang
Pingwei Xu
Jun Luo
Chu Liu
Tao Zhang
Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions
Crystals
stacking faults
frank partial dislocation
precipitates
vacancies
author_facet Sijie Li
Hongyun Luo
Hui Wang
Pingwei Xu
Jun Luo
Chu Liu
Tao Zhang
author_sort Sijie Li
title Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions
title_short Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions
title_full Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions
title_fullStr Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions
title_full_unstemmed Stable Stacking Faults Bounded by Frank Partial Dislocations in Al7075 Formed through Precipitate and Dislocation Interactions
title_sort stable stacking faults bounded by frank partial dislocations in al7075 formed through precipitate and dislocation interactions
publisher MDPI AG
series Crystals
issn 2073-4352
publishDate 2017-12-01
description Through high-resolution electron microscopy, stacking faults (SFs) due to Frank partial dislocations were found in an aluminum alloy following deformation with low strain and strain rate, while also remaining stable during artificial aging. Extrinsic stacking faults were found surrounded by dislocation areas and precipitates. An intrinsic stacking fault was found between two Guinier-Preston II (GP II) zones when the distance of the two GP II zones was 2 nm. Defects (precipitates and dislocations) are considered to have an influence on the formation of the SFs, as their appearance may cause local strain and promote the gathering of vacancies to lower the energy.
topic stacking faults
frank partial dislocation
precipitates
vacancies
url https://www.mdpi.com/2073-4352/7/12/375
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AT hongyunluo stablestackingfaultsboundedbyfrankpartialdislocationsinal7075formedthroughprecipitateanddislocationinteractions
AT huiwang stablestackingfaultsboundedbyfrankpartialdislocationsinal7075formedthroughprecipitateanddislocationinteractions
AT pingweixu stablestackingfaultsboundedbyfrankpartialdislocationsinal7075formedthroughprecipitateanddislocationinteractions
AT junluo stablestackingfaultsboundedbyfrankpartialdislocationsinal7075formedthroughprecipitateanddislocationinteractions
AT chuliu stablestackingfaultsboundedbyfrankpartialdislocationsinal7075formedthroughprecipitateanddislocationinteractions
AT taozhang stablestackingfaultsboundedbyfrankpartialdislocationsinal7075formedthroughprecipitateanddislocationinteractions
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