Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloys
Microalloying enhances the properties of Arc-Directed Energy Deposited (Arc-DED) Al–Cu alloys but influences the Hot Cracking Susceptibility (HCS). This study investigated the HCS of Cd and Ag–Mg microalloyed Al–Cu alloys during Arc-DED by both calculation and experiment. Solidification paths, accou...
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425010440 |
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| author | Xinyu Wang Yue Zhao Quan Li Yanzhuo Wei Aiping Wu |
| author_facet | Xinyu Wang Yue Zhao Quan Li Yanzhuo Wei Aiping Wu |
| author_sort | Xinyu Wang |
| collection | DOAJ |
| description | Microalloying enhances the properties of Arc-Directed Energy Deposited (Arc-DED) Al–Cu alloys but influences the Hot Cracking Susceptibility (HCS). This study investigated the HCS of Cd and Ag–Mg microalloyed Al–Cu alloys during Arc-DED by both calculation and experiment. Solidification paths, accounting for solid-state diffusion, were calculated. From solidification paths, the index |dT/d(fs1/2)|max near fs = 1 was calculated to assess solidification cracking susceptibility. Circular-patch welding tests were conducted by Arc-DED single-wall samples. Results of Circular-patch welding tests indicate a strong correlation between total solidification crack length and |dT/d(fs1/2)|max, confirming the effectiveness of the index in Arc-DED. Results of calculation suggest Cu content exerts the most significant influence on HCS. Increasing Cu content reduces HCS by increasing eutectic content, while the effect of Cd content on HCS is less than 5 % when Cd content ranges from 0 to 0.3 wt%. Coupling effects among Cu, Mg, and Ag were observed. When Mg content is 0.3 wt% and content of Cu and Ag is high, HCS is approximately 1000 °C higher than that with other composition. Composition of micro-alloyed Al–Cu alloys with HCS comparable to 2319 alloy was proposed. |
| format | Article |
| id | doaj-art-39dcb7d8aaf6407da0292b1f73ab9b65 |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-39dcb7d8aaf6407da0292b1f73ab9b652025-08-20T02:56:09ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01367361737210.1016/j.jmrt.2025.04.223Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloysXinyu Wang0Yue Zhao1Quan Li2Yanzhuo Wei3Aiping Wu4Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing, 100084, China; State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, ChinaCapital Aerospace Machinery Corporation Limited, Beijing, 100076, China; Corresponding author.Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing, 100084, China; State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China; Corresponding author. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.Microalloying enhances the properties of Arc-Directed Energy Deposited (Arc-DED) Al–Cu alloys but influences the Hot Cracking Susceptibility (HCS). This study investigated the HCS of Cd and Ag–Mg microalloyed Al–Cu alloys during Arc-DED by both calculation and experiment. Solidification paths, accounting for solid-state diffusion, were calculated. From solidification paths, the index |dT/d(fs1/2)|max near fs = 1 was calculated to assess solidification cracking susceptibility. Circular-patch welding tests were conducted by Arc-DED single-wall samples. Results of Circular-patch welding tests indicate a strong correlation between total solidification crack length and |dT/d(fs1/2)|max, confirming the effectiveness of the index in Arc-DED. Results of calculation suggest Cu content exerts the most significant influence on HCS. Increasing Cu content reduces HCS by increasing eutectic content, while the effect of Cd content on HCS is less than 5 % when Cd content ranges from 0 to 0.3 wt%. Coupling effects among Cu, Mg, and Ag were observed. When Mg content is 0.3 wt% and content of Cu and Ag is high, HCS is approximately 1000 °C higher than that with other composition. Composition of micro-alloyed Al–Cu alloys with HCS comparable to 2319 alloy was proposed.http://www.sciencedirect.com/science/article/pii/S2238785425010440Chemical compositionArc-directed energy depositionMicroalloyed Al–Cu alloysHot cracking susceptibility |
| spellingShingle | Xinyu Wang Yue Zhao Quan Li Yanzhuo Wei Aiping Wu Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloys Journal of Materials Research and Technology Chemical composition Arc-directed energy deposition Microalloyed Al–Cu alloys Hot cracking susceptibility |
| title | Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloys |
| title_full | Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloys |
| title_fullStr | Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloys |
| title_full_unstemmed | Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloys |
| title_short | Effect of composition on hot cracking susceptibility of Arc-Directed Energy Deposited microalloyed Al–Cu alloys |
| title_sort | effect of composition on hot cracking susceptibility of arc directed energy deposited microalloyed al cu alloys |
| topic | Chemical composition Arc-directed energy deposition Microalloyed Al–Cu alloys Hot cracking susceptibility |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425010440 |
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