Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy Sheets
In this study, the microstructural variations, mechanical properties and forming limit diagrams (FLD) of Al 2024 aluminum alloy sheet with the thickness of 0.81mm are investigated during natural ageing (T4) treatment. The most formability in Al 2024 can be achieved just after solution treatment, and...
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| Format: | Article |
| Language: | English |
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Iran University of Science & Technology
2018-12-01
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| Series: | Iranian Journal of Materials Science and Engineering |
| Subjects: | |
| Online Access: | http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1582-1&slc_lang=en&sid=1 |
| _version_ | 1811295198974574592 |
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| author | M. Fallah Tafti M. Sedighi R. Hashemi |
| author_facet | M. Fallah Tafti M. Sedighi R. Hashemi |
| author_sort | M. Fallah Tafti |
| collection | DOAJ |
| description | In this study, the microstructural variations, mechanical properties and forming limit diagrams (FLD) of Al 2024 aluminum alloy sheet with the thickness of 0.81mm are investigated during natural ageing (T4) treatment. The most formability in Al 2024 can be achieved just after solution treatment, and it is better to perform the forming process, on this aluminum alloy sheet, in this condition. However, in industrial applications, there is usually a postponement for some hours after solution treatment to begin the forming process that it means the forming process should be done at the natural ageing condition. This condition decreases the formability of Al 2024 sheets. To monitor the properties variations in natural ageing condition, FLDs are determined after specific times (e.g., 0.5, 1.5, 4 and 24 hours). The variations in micro-hardness, yield strength, ultimate tensile strength and elongation at break are observed with changing the ageing time. The scanning electron microscope (SEM) investigations illustrated that density and size of precipitates are changed with ageing time. Moreover, the Nakazima test is utilized to study the forming limits considering the natural ageing condition. Results show by increasing the ageing time, up to 4hr, the majority of properties variations could be seen, and from 4hr to 24hr, the variations are changed slower. |
| first_indexed | 2024-04-13T05:28:57Z |
| format | Article |
| id | doaj.art-f47c7847eed04acd8bb28825067ca39b |
| institution | Directory Open Access Journal |
| issn | 1735-0808 2383-3882 |
| language | English |
| last_indexed | 2024-04-13T05:28:57Z |
| publishDate | 2018-12-01 |
| publisher | Iran University of Science & Technology |
| record_format | Article |
| series | Iranian Journal of Materials Science and Engineering |
| spelling | doaj.art-f47c7847eed04acd8bb28825067ca39b2022-12-22T03:00:30ZengIran University of Science & TechnologyIranian Journal of Materials Science and Engineering1735-08082383-38822018-12-01154110Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy SheetsM. Fallah Tafti0M. Sedighi1R. Hashemi2 School of Mechanical Engineering, Iran University of Science and Technology School of Mechanical Engineering, Iran University of Science and Technology School of Mechanical Engineering, Iran University of Science and Technology In this study, the microstructural variations, mechanical properties and forming limit diagrams (FLD) of Al 2024 aluminum alloy sheet with the thickness of 0.81mm are investigated during natural ageing (T4) treatment. The most formability in Al 2024 can be achieved just after solution treatment, and it is better to perform the forming process, on this aluminum alloy sheet, in this condition. However, in industrial applications, there is usually a postponement for some hours after solution treatment to begin the forming process that it means the forming process should be done at the natural ageing condition. This condition decreases the formability of Al 2024 sheets. To monitor the properties variations in natural ageing condition, FLDs are determined after specific times (e.g., 0.5, 1.5, 4 and 24 hours). The variations in micro-hardness, yield strength, ultimate tensile strength and elongation at break are observed with changing the ageing time. The scanning electron microscope (SEM) investigations illustrated that density and size of precipitates are changed with ageing time. Moreover, the Nakazima test is utilized to study the forming limits considering the natural ageing condition. Results show by increasing the ageing time, up to 4hr, the majority of properties variations could be seen, and from 4hr to 24hr, the variations are changed slower.http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1582-1&slc_lang=en&sid=1Aluminum alloysNatural agingSolutionForming limit diagrams |
| spellingShingle | M. Fallah Tafti M. Sedighi R. Hashemi Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy Sheets Iranian Journal of Materials Science and Engineering Aluminum alloys Natural aging Solution Forming limit diagrams |
| title | Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy Sheets |
| title_full | Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy Sheets |
| title_fullStr | Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy Sheets |
| title_full_unstemmed | Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy Sheets |
| title_short | Effects of Natural Aging Treatment on Mechanical, Microstructural and Forming Properties of Al 2024 Aluminum Alloy Sheets |
| title_sort | effects of natural aging treatment on mechanical microstructural and forming properties of al 2024 aluminum alloy sheets |
| topic | Aluminum alloys Natural aging Solution Forming limit diagrams |
| url | http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1582-1&slc_lang=en&sid=1 |
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