The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloy
The trade-off between strength and fracture toughness in metallic alloys remains a longstanding challenge. This study investigates the effect of Zn content on the mechanical properties and fracture behavior of Al–Zn–Mg–Cu alloys. Increasing Zn content enhances yield and tensile strength due to preci...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-05-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425009172 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850141106086346752 |
|---|---|
| author | Yong Hee Jo Hyeji Jung Seoyeon Jeon Hyunjoo Choi Hyoung-Wook Kim Hyokyung Sung |
| author_facet | Yong Hee Jo Hyeji Jung Seoyeon Jeon Hyunjoo Choi Hyoung-Wook Kim Hyokyung Sung |
| author_sort | Yong Hee Jo |
| collection | DOAJ |
| description | The trade-off between strength and fracture toughness in metallic alloys remains a longstanding challenge. This study investigates the effect of Zn content on the mechanical properties and fracture behavior of Al–Zn–Mg–Cu alloys. Increasing Zn content enhances yield and tensile strength due to precipitate strengthening, driven by increased η′ precipitate density. However, this improvement in strength is accompanied by reduced fracture toughness, as higher Zn content decreases the plastic zone size and promotes crack propagation. The high dislocation density induced by η′ precipitates contributes to this by creating a driving force for crack propagation, further influenced by the strain field generated by fine precipitates. These findings underscore the critical role of Zn content in managing the strength-toughness trade-off, offering insights for optimizing the mechanical performance of Al–Zn–Mg–Cu alloys. |
| format | Article |
| id | doaj-art-29d37b32f22f4a4abe80250b7c4c8b74 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-29d37b32f22f4a4abe80250b7c4c8b742025-08-20T02:29:34ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01365696570610.1016/j.jmrt.2025.04.096The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloyYong Hee Jo0Hyeji Jung1Seoyeon Jeon2Hyunjoo Choi3Hyoung-Wook Kim4Hyokyung Sung5Department of Aluminum, Advanced Metals Division, Korea Institute of Materials Science, Changwon, 51508, Republic of KoreaDepartment of Materials Science and Engineering, Kookmin University, Seoul, 02707, Republic of KoreaDepartment of Materials Science and Engineering, Kookmin University, Seoul, 02707, Republic of KoreaDepartment of Materials Science and Engineering, Kookmin University, Seoul, 02707, Republic of KoreaDepartment of Aluminum, Advanced Metals Division, Korea Institute of Materials Science, Changwon, 51508, Republic of KoreaDepartment of Materials Science and Engineering, Kookmin University, Seoul, 02707, Republic of Korea; Corresponding author.The trade-off between strength and fracture toughness in metallic alloys remains a longstanding challenge. This study investigates the effect of Zn content on the mechanical properties and fracture behavior of Al–Zn–Mg–Cu alloys. Increasing Zn content enhances yield and tensile strength due to precipitate strengthening, driven by increased η′ precipitate density. However, this improvement in strength is accompanied by reduced fracture toughness, as higher Zn content decreases the plastic zone size and promotes crack propagation. The high dislocation density induced by η′ precipitates contributes to this by creating a driving force for crack propagation, further influenced by the strain field generated by fine precipitates. These findings underscore the critical role of Zn content in managing the strength-toughness trade-off, offering insights for optimizing the mechanical performance of Al–Zn–Mg–Cu alloys.http://www.sciencedirect.com/science/article/pii/S2238785425009172Al-Zn-Mg-Cu alloysFracture toughnessη′ precipitatesPlastic zone |
| spellingShingle | Yong Hee Jo Hyeji Jung Seoyeon Jeon Hyunjoo Choi Hyoung-Wook Kim Hyokyung Sung The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloy Journal of Materials Research and Technology Al-Zn-Mg-Cu alloys Fracture toughness η′ precipitates Plastic zone |
| title | The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloy |
| title_full | The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloy |
| title_fullStr | The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloy |
| title_full_unstemmed | The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloy |
| title_short | The effect of Zn content on tensile properties and fracture toughness of Al–Zn–Mg–Cu alloy |
| title_sort | effect of zn content on tensile properties and fracture toughness of al zn mg cu alloy |
| topic | Al-Zn-Mg-Cu alloys Fracture toughness η′ precipitates Plastic zone |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425009172 |
| work_keys_str_mv | AT yongheejo theeffectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyejijung theeffectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT seoyeonjeon theeffectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyunjoochoi theeffectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyoungwookkim theeffectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyokyungsung theeffectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT yongheejo effectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyejijung effectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT seoyeonjeon effectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyunjoochoi effectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyoungwookkim effectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy AT hyokyungsung effectofzncontentontensilepropertiesandfracturetoughnessofalznmgcualloy |