In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloys
In-situ synchrotron X-radiography studied the impact of TiCN nanoparticles (TiCNnp) on α-Al dendrite morphology and growth in Al–13Cu–7Si alloys. Comparative experiments were conducted without nanoparticles and with the addition of Al–5Ti–1B. Despite Al–5Ti–1B had almost no refining effect, 0.5% TiC...
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2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424026395 |
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| author | Yiwang Jia Xiaojuan Shang Da Shu Yuanzheng Cao Guangkai Yang |
| author_facet | Yiwang Jia Xiaojuan Shang Da Shu Yuanzheng Cao Guangkai Yang |
| author_sort | Yiwang Jia |
| collection | DOAJ |
| description | In-situ synchrotron X-radiography studied the impact of TiCN nanoparticles (TiCNnp) on α-Al dendrite morphology and growth in Al–13Cu–7Si alloys. Comparative experiments were conducted without nanoparticles and with the addition of Al–5Ti–1B. Despite Al–5Ti–1B had almost no refining effect, 0.5% TiCNnp notably reduced α-Al grain size of Al–Cu–Si alloys, especially at higher cooling rates. When cooled at a rate of 0.2K/s, the dendrite tip radius of α-Al with the addition of TiCNnp (18.2 μm) was approximately twice as large as that without nanoparticles (9.8 μm). Concurrently, the primary dendrite growth rate of α-Al without nanoparticles exceeded that with TiCNnp by approximately 15 times. This discrepancy can be attributed to the coarser dendrite tip of α-Al induced by TiCNnp, which led to a greater solute accumulation in front of the tip. Furthermore, the area growth rate of both grain and solute suppressed nucleation zone (SSNZ) with addition of TiCNnp was only one-tenth of that observed with Al–5Ti–1B. Consequently, the incorporation of TiCNnp resulted in a significantly smaller nucleation-free zone, facilitating the activation of a greater number of nucleation sites within the melt. This study sheds light on the growth inhibition mechanism of TiCNnp in Al–Si alloys. |
| format | Article |
| id | doaj-art-68784e4b1892471792b268d4d5f98b3a |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-68784e4b1892471792b268d4d5f98b3a2025-08-20T02:35:31ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01338079809010.1016/j.jmrt.2024.11.111In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloysYiwang Jia0Xiaojuan Shang1Da Shu2Yuanzheng Cao3Guangkai Yang4College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China; Corresponding author.College of Materials and Metallurgy, Guizhou University, Guiyang, 550025, China; Guizhou Communications Polytechnic, Guiyang, Guizhou, 551400, ChinaShanghai Key Lab of Advanced High-temperature Materials and Precision Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaCollege of Materials and Metallurgy, Guizhou University, Guiyang, 550025, ChinaCollege of Materials and Metallurgy, Guizhou University, Guiyang, 550025, ChinaIn-situ synchrotron X-radiography studied the impact of TiCN nanoparticles (TiCNnp) on α-Al dendrite morphology and growth in Al–13Cu–7Si alloys. Comparative experiments were conducted without nanoparticles and with the addition of Al–5Ti–1B. Despite Al–5Ti–1B had almost no refining effect, 0.5% TiCNnp notably reduced α-Al grain size of Al–Cu–Si alloys, especially at higher cooling rates. When cooled at a rate of 0.2K/s, the dendrite tip radius of α-Al with the addition of TiCNnp (18.2 μm) was approximately twice as large as that without nanoparticles (9.8 μm). Concurrently, the primary dendrite growth rate of α-Al without nanoparticles exceeded that with TiCNnp by approximately 15 times. This discrepancy can be attributed to the coarser dendrite tip of α-Al induced by TiCNnp, which led to a greater solute accumulation in front of the tip. Furthermore, the area growth rate of both grain and solute suppressed nucleation zone (SSNZ) with addition of TiCNnp was only one-tenth of that observed with Al–5Ti–1B. Consequently, the incorporation of TiCNnp resulted in a significantly smaller nucleation-free zone, facilitating the activation of a greater number of nucleation sites within the melt. This study sheds light on the growth inhibition mechanism of TiCNnp in Al–Si alloys.http://www.sciencedirect.com/science/article/pii/S2238785424026395Al-Cu-Si alloyDendrite tipGrain refinementX-radiographyTiCN nanoparticle |
| spellingShingle | Yiwang Jia Xiaojuan Shang Da Shu Yuanzheng Cao Guangkai Yang In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloys Journal of Materials Research and Technology Al-Cu-Si alloy Dendrite tip Grain refinement X-radiography TiCN nanoparticle |
| title | In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloys |
| title_full | In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloys |
| title_fullStr | In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloys |
| title_full_unstemmed | In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloys |
| title_short | In-situ quantitative investigation of the growth inhibition effect of TiCN nanoparticles on primary α-Al in Al–Cu–Si alloys |
| title_sort | in situ quantitative investigation of the growth inhibition effect of ticn nanoparticles on primary α al in al cu si alloys |
| topic | Al-Cu-Si alloy Dendrite tip Grain refinement X-radiography TiCN nanoparticle |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424026395 |
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