Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu Alloys
Natural aging reduces the cost of alloy manufacturing while saving input energy but takes too long to complete for most Al-Zn-Mg-Cu alloys. Research has proved that nano-treating can facilitate precipitation in heat-treatable alloys. In this study, nano-treated Al-6.0Zn-2.6Mg-xCu samples containing...
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MDPI AG
2022-04-01
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| Series: | Journal of Composites Science |
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| Online Access: | https://www.mdpi.com/2504-477X/6/4/114 |
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| author | Jie Yuan Qian Liu Shuaihang Pan Mingjie Xu Narayanan Murali Jiaxing Li Shuai Wang Xiaochun Li |
| author_facet | Jie Yuan Qian Liu Shuaihang Pan Mingjie Xu Narayanan Murali Jiaxing Li Shuai Wang Xiaochun Li |
| author_sort | Jie Yuan |
| collection | DOAJ |
| description | Natural aging reduces the cost of alloy manufacturing while saving input energy but takes too long to complete for most Al-Zn-Mg-Cu alloys. Research has proved that nano-treating can facilitate precipitation in heat-treatable alloys. In this study, nano-treated Al-6.0Zn-2.6Mg-xCu samples containing different Cu contents were fabricated to investigate the influence of nano-treating on natural aging. TiC nanoparticles were used for nano-treating. Three cooling conditions after solution treatment (water quenching, air cooling, and as-cast) were investigated to check their quench sensitivities. The study shows the alloy’s microstructure was modified by nano-treating, and the growth of dendritic arms was inhibited. Compared to the control samples, nano-treating also increased both the microhardness and tensile strength of the alloy after natural aging. Out of the three different solution treatments, the air-cooled samples presented the highest UTS and microhardness values. The precipitation process was sped up by nano-treating by approximately 50%, and a higher volume fraction of GPII zones were formed in the nano-treated samples. HRTEM results also confirm the formation of more GPI and GPII zones in a nano-treated samples. With the help of natural aging, the Al-6.0Zn-2.6Mg-0.5Cu alloy reached a UTS of 455.7 ± 40.2 MPa and elongation of 4.52 ± 1.34% which makes it a great candidate for a naturally aged Al-Zn-Mg-Cu alloy. |
| first_indexed | 2024-03-09T10:33:26Z |
| format | Article |
| id | doaj.art-c21c2a95e5344d06bd6b8d8e077e8bb6 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T10:33:26Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-c21c2a95e5344d06bd6b8d8e077e8bb62023-12-01T21:07:28ZengMDPI AGJournal of Composites Science2504-477X2022-04-016411410.3390/jcs6040114Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu AlloysJie Yuan0Qian Liu1Shuaihang Pan2Mingjie Xu3Narayanan Murali4Jiaxing Li5Shuai Wang6Xiaochun Li7Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095, USADepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Mechanical and Aerospace Engineering, University of California Los Angeles, Los Angeles, CA 90095, USAMaterials Research Institute, University of California Irvine, Irvine, CA 92697, USADepartment of Materials Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095, USADepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Materials Science and Engineering, University of California Los Angeles, Los Angeles, CA 90095, USANatural aging reduces the cost of alloy manufacturing while saving input energy but takes too long to complete for most Al-Zn-Mg-Cu alloys. Research has proved that nano-treating can facilitate precipitation in heat-treatable alloys. In this study, nano-treated Al-6.0Zn-2.6Mg-xCu samples containing different Cu contents were fabricated to investigate the influence of nano-treating on natural aging. TiC nanoparticles were used for nano-treating. Three cooling conditions after solution treatment (water quenching, air cooling, and as-cast) were investigated to check their quench sensitivities. The study shows the alloy’s microstructure was modified by nano-treating, and the growth of dendritic arms was inhibited. Compared to the control samples, nano-treating also increased both the microhardness and tensile strength of the alloy after natural aging. Out of the three different solution treatments, the air-cooled samples presented the highest UTS and microhardness values. The precipitation process was sped up by nano-treating by approximately 50%, and a higher volume fraction of GPII zones were formed in the nano-treated samples. HRTEM results also confirm the formation of more GPI and GPII zones in a nano-treated samples. With the help of natural aging, the Al-6.0Zn-2.6Mg-0.5Cu alloy reached a UTS of 455.7 ± 40.2 MPa and elongation of 4.52 ± 1.34% which makes it a great candidate for a naturally aged Al-Zn-Mg-Cu alloy.https://www.mdpi.com/2504-477X/6/4/114nature agingAl-Zn-Mg-Cu alloynano-treatingTiC nanoparticles |
| spellingShingle | Jie Yuan Qian Liu Shuaihang Pan Mingjie Xu Narayanan Murali Jiaxing Li Shuai Wang Xiaochun Li Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu Alloys Journal of Composites Science nature aging Al-Zn-Mg-Cu alloy nano-treating TiC nanoparticles |
| title | Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu Alloys |
| title_full | Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu Alloys |
| title_fullStr | Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu Alloys |
| title_full_unstemmed | Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu Alloys |
| title_short | Nano-Treating Promoted Natural Aging Al-Zn-Mg-Cu Alloys |
| title_sort | nano treating promoted natural aging al zn mg cu alloys |
| topic | nature aging Al-Zn-Mg-Cu alloy nano-treating TiC nanoparticles |
| url | https://www.mdpi.com/2504-477X/6/4/114 |
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