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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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 |
work_keys_str_mv |
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