Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation
The 7046 aluminum alloy possesses a favorable fatigue property, corrosion resistance and weldability, but its moderate strength and plasticity limit its wider application and development. In the present study, severe plastic deformation (SPD) was applied prior to T6 treatment to significantly enhanc...
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MDPI AG
2024-09-01
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| author | Yuna Wu Hongchen Dong Hao Huang Ting Yuan Jing Bai Jinghua Jiang Feng Fang Aibin Ma |
| author_facet | Yuna Wu Hongchen Dong Hao Huang Ting Yuan Jing Bai Jinghua Jiang Feng Fang Aibin Ma |
| author_sort | Yuna Wu |
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| description | The 7046 aluminum alloy possesses a favorable fatigue property, corrosion resistance and weldability, but its moderate strength and plasticity limit its wider application and development. In the present study, severe plastic deformation (SPD) was applied prior to T6 treatment to significantly enhance the strength and toughness of the 7046 aluminum alloy. The results show that the alloy processed by four passes of equal channel angular pressing (ECAP) at 300 °C prior to T6 treatment exhibits an excellent mechanical performance, achieving an ultimate tensile strength (UTS) and elongation (EL) of 485 MPa and 19%, respectively, which are 18.6% and 375% higher than that of the T6 alloy. The mechanical properties of the alloy are further improved by an additional room temperature (RT) rolling process, resulting in a UTS of 508 MPa and EL of 23.4%, respectively. The increased presence of η′ and Al<sub>6</sub>Mn phases in the 300°C4P-R80%-T6 and 300°C4P-T6 alloys contributes to a strengthening and toughening enhancement in the SPD-processed T6 alloy. The findings from this work may shed new insights into enhancing the 7046 aluminum alloy. |
| format | Article |
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| institution | OA Journals |
| issn | 2075-4701 |
| language | English |
| publishDate | 2024-09-01 |
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| spelling | doaj-art-e0335fe948864786b86e9b97aeb98d4c2025-08-20T02:11:13ZengMDPI AGMetals2075-47012024-09-011410109310.3390/met14101093Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic DeformationYuna Wu0Hongchen Dong1Hao Huang2Ting Yuan3Jing Bai4Jinghua Jiang5Feng Fang6Aibin Ma7College of Materials Science and Engineering, Hohai University, Changzhou 213200, ChinaCollege of Materials Science and Engineering, Hohai University, Changzhou 213200, ChinaCollege of Materials Science and Engineering, Hohai University, Changzhou 213200, ChinaSchool of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaCollege of Materials Science and Engineering, Hohai University, Changzhou 213200, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaCollege of Materials Science and Engineering, Hohai University, Changzhou 213200, ChinaThe 7046 aluminum alloy possesses a favorable fatigue property, corrosion resistance and weldability, but its moderate strength and plasticity limit its wider application and development. In the present study, severe plastic deformation (SPD) was applied prior to T6 treatment to significantly enhance the strength and toughness of the 7046 aluminum alloy. The results show that the alloy processed by four passes of equal channel angular pressing (ECAP) at 300 °C prior to T6 treatment exhibits an excellent mechanical performance, achieving an ultimate tensile strength (UTS) and elongation (EL) of 485 MPa and 19%, respectively, which are 18.6% and 375% higher than that of the T6 alloy. The mechanical properties of the alloy are further improved by an additional room temperature (RT) rolling process, resulting in a UTS of 508 MPa and EL of 23.4%, respectively. The increased presence of η′ and Al<sub>6</sub>Mn phases in the 300°C4P-R80%-T6 and 300°C4P-T6 alloys contributes to a strengthening and toughening enhancement in the SPD-processed T6 alloy. The findings from this work may shed new insights into enhancing the 7046 aluminum alloy.https://www.mdpi.com/2075-4701/14/10/1093ECAProllingT6aluminum alloystrengthening and toughening |
| spellingShingle | Yuna Wu Hongchen Dong Hao Huang Ting Yuan Jing Bai Jinghua Jiang Feng Fang Aibin Ma Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation Metals ECAP rolling T6 aluminum alloy strengthening and toughening |
| title | Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation |
| title_full | Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation |
| title_fullStr | Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation |
| title_full_unstemmed | Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation |
| title_short | Enhanced Strengthening and Toughening of T6-Treated 7046 Aluminum Alloy through Severe Plastic Deformation |
| title_sort | enhanced strengthening and toughening of t6 treated 7046 aluminum alloy through severe plastic deformation |
| topic | ECAP rolling T6 aluminum alloy strengthening and toughening |
| url | https://www.mdpi.com/2075-4701/14/10/1093 |
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