Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloy
Al–Cu–Li cast alloy components also show a promising application in the aerospace industry due to their relatively good combination of density and performance. According to the conventional processing procedures for cast products, a novel cast Al–Cu–Li alloy was directly solution treated and aged af...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422020129 |
| _version_ | 1797943053905821696 |
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| author | Shuwei Duan Zhongli Liu Fuqiang Guo Yuzhe Pan Kenji Matsuda Yong Zou |
| author_facet | Shuwei Duan Zhongli Liu Fuqiang Guo Yuzhe Pan Kenji Matsuda Yong Zou |
| author_sort | Shuwei Duan |
| collection | DOAJ |
| description | Al–Cu–Li cast alloy components also show a promising application in the aerospace industry due to their relatively good combination of density and performance. According to the conventional processing procedures for cast products, a novel cast Al–Cu–Li alloy was directly solution treated and aged after homogenization, then the aging precipitation behavior and its effect on the mechanical properties of the alloy were investigated in this article. It was found that the naturally aged precipitates are rapidly dissolved during artificial aging at 175 °C, and the cubic phase, θ′ phase, T1 phase, Ω phase, and S phase will precipitate successively. In the early stage of artificial aging, the cubic phase and θ′ phase are formed prior to the T1 phase. With the aging time increasing, numerous T1 phases also precipitate with relatively large diameters, so the hardness of the alloy keeps rising until to the peak value. The naturally aged specimens show good plasticity and relatively low strength. After artificial aging, the tensile strength of the cast alloy can be increased to 423 MPa, but the corresponding elongation has a significant reduction. Moreover, the predominant precipitates—T1 phase and cubic phase show excellent thermal stability during 175 °C aging, they still exist with a large population even aged for 40 days. |
| first_indexed | 2024-04-10T20:17:18Z |
| format | Article |
| id | doaj.art-eb3279117486421ea9d43e11f65fe9eb |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-10T20:17:18Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-eb3279117486421ea9d43e11f65fe9eb2023-01-26T04:46:33ZengElsevierJournal of Materials Research and Technology2238-78542023-01-012225022517Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloyShuwei Duan0Zhongli Liu1Fuqiang Guo2Yuzhe Pan3Kenji Matsuda4Yong Zou5College of Nuclear Equipment and Nuclear Engineering, Yantai University, Yantai 264005, PR China; Corresponding author.College of Nuclear Equipment and Nuclear Engineering, Yantai University, Yantai 264005, PR ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, PR ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, PR ChinaDepartment of Materials Design and Engineering, Faculty of Sustainable Design, University of Toyama, Toyama 930-8555, JapanKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, PR ChinaAl–Cu–Li cast alloy components also show a promising application in the aerospace industry due to their relatively good combination of density and performance. According to the conventional processing procedures for cast products, a novel cast Al–Cu–Li alloy was directly solution treated and aged after homogenization, then the aging precipitation behavior and its effect on the mechanical properties of the alloy were investigated in this article. It was found that the naturally aged precipitates are rapidly dissolved during artificial aging at 175 °C, and the cubic phase, θ′ phase, T1 phase, Ω phase, and S phase will precipitate successively. In the early stage of artificial aging, the cubic phase and θ′ phase are formed prior to the T1 phase. With the aging time increasing, numerous T1 phases also precipitate with relatively large diameters, so the hardness of the alloy keeps rising until to the peak value. The naturally aged specimens show good plasticity and relatively low strength. After artificial aging, the tensile strength of the cast alloy can be increased to 423 MPa, but the corresponding elongation has a significant reduction. Moreover, the predominant precipitates—T1 phase and cubic phase show excellent thermal stability during 175 °C aging, they still exist with a large population even aged for 40 days.http://www.sciencedirect.com/science/article/pii/S2238785422020129Al–Cu–Li alloyArtificial agingPrecipitate evolutionMechanical property |
| spellingShingle | Shuwei Duan Zhongli Liu Fuqiang Guo Yuzhe Pan Kenji Matsuda Yong Zou Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloy Journal of Materials Research and Technology Al–Cu–Li alloy Artificial aging Precipitate evolution Mechanical property |
| title | Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloy |
| title_full | Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloy |
| title_fullStr | Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloy |
| title_full_unstemmed | Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloy |
| title_short | Precipitates evolution during artificial aging and their influence on mechanical properties of a cast Al–Cu–Li alloy |
| title_sort | precipitates evolution during artificial aging and their influence on mechanical properties of a cast al cu li alloy |
| topic | Al–Cu–Li alloy Artificial aging Precipitate evolution Mechanical property |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422020129 |
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