Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements
The quench sensitivity of 7085 aluminum alloy with different contents of the main alloying elements (Zn, Mg and Cu) was investigated using time-temperature-transformation (TTT) curves and end quenching experiments. Then, the quenching microstructure was analyzed using transmission electron microscop...
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MDPI AG
2019-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/9/965 |
| _version_ | 1818447705377079296 |
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| author | Chengbo Li Dongdong Chen |
| author_facet | Chengbo Li Dongdong Chen |
| author_sort | Chengbo Li |
| collection | DOAJ |
| description | The quench sensitivity of 7085 aluminum alloy with different contents of the main alloying elements (Zn, Mg and Cu) was investigated using time-temperature-transformation (TTT) curves and end quenching experiments. Then, the quenching microstructure was analyzed using transmission electron microscopy. With increasing the contents of the main alloying elements, the transitions and nose temperatures of the TTT curves are obviously increased, while the incubation time of 0.5% η (MgZn<sub>2</sub>) phase precipitation content is decreased. In addition, as the contents of the main alloying elements decrease, the conductivity of the quenched samples is increased, but the hardness of the quenched samples is decreased. Moreover, the size and area fraction of the η phase are increased with increasing the contents of the main alloying elements. Based on the experimental results, the increase of Mg and Cu contents can decrease the stability of supersaturated solid solution and increase the lattice distortion energy, which can increase the quench sensitivity of 7085 aluminum alloy. |
| first_indexed | 2024-12-14T20:07:52Z |
| format | Article |
| id | doaj.art-d3aaf3be6d96443c96494ab4306dca9b |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-14T20:07:52Z |
| publishDate | 2019-09-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-d3aaf3be6d96443c96494ab4306dca9b2022-12-21T22:48:59ZengMDPI AGMetals2075-47012019-09-019996510.3390/met9090965met9090965Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying ElementsChengbo Li0Dongdong Chen1School of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaThe quench sensitivity of 7085 aluminum alloy with different contents of the main alloying elements (Zn, Mg and Cu) was investigated using time-temperature-transformation (TTT) curves and end quenching experiments. Then, the quenching microstructure was analyzed using transmission electron microscopy. With increasing the contents of the main alloying elements, the transitions and nose temperatures of the TTT curves are obviously increased, while the incubation time of 0.5% η (MgZn<sub>2</sub>) phase precipitation content is decreased. In addition, as the contents of the main alloying elements decrease, the conductivity of the quenched samples is increased, but the hardness of the quenched samples is decreased. Moreover, the size and area fraction of the η phase are increased with increasing the contents of the main alloying elements. Based on the experimental results, the increase of Mg and Cu contents can decrease the stability of supersaturated solid solution and increase the lattice distortion energy, which can increase the quench sensitivity of 7085 aluminum alloy.https://www.mdpi.com/2075-4701/9/9/9657085 aluminum alloyquench sensitivitymain alloying elementsη phase |
| spellingShingle | Chengbo Li Dongdong Chen Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements Metals 7085 aluminum alloy quench sensitivity main alloying elements η phase |
| title | Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements |
| title_full | Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements |
| title_fullStr | Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements |
| title_full_unstemmed | Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements |
| title_short | Investigation on the Quench Sensitivity of 7085 Aluminum Alloy with Different Contents of Main Alloying Elements |
| title_sort | investigation on the quench sensitivity of 7085 aluminum alloy with different contents of main alloying elements |
| topic | 7085 aluminum alloy quench sensitivity main alloying elements η phase |
| url | https://www.mdpi.com/2075-4701/9/9/965 |
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