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Khan, MH, Das, A, Li, Z and Kotadia, HR (2021) Effects of Fe, Mn, chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy. Intermetallics, 132. ISSN 0966-9795
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Effects of Fe, Mn and chemical grain refinement and cooling rate on the evolution of Fe intermetallics in a model 6082 Al-alloy.pdf - Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (2MB) | Preview |
Abstract
The solidification microstructures formed in a model 6082 alloy with 0.2–1.0 wt % Fe were examined under different cooling rates and the effects of 0.5 wt % Mn and Al–5Ti–1B grain refiner addition investigated. The results were compared against Thermo-Calc, differential scanning calorimetry (DSC) and cooling curve analysis. Fe promotes primary-Al grain refinement from growth restriction and constitutional undercooling effects but increases detrimental β–(Al9Fe2Si2) intermetallic. Mn contributes to primary-Al grain refinement from growth restriction and promotes the formation of α–Al15(Fe,Mn)3Si2 at the expense of increased intermetallic content. Al–5Ti–1B inoculation not only produces the strongest refinement of primary-Al grains but also refines the Fe-intermetallics by enhancing their nucleation and restricting their growth volume in the interdendritic liquid pockets.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 0306 Physical Chemistry (incl. Structural); 0912 Materials Engineering; 0914 Resources Engineering and Extractive Metallurgy; Materials |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Engineering |
| Publisher: | Elsevier |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 27 Jan 2025 13:14 |
| Last Modified: | 27 Jan 2025 13:15 |
| DOI or ID number: | 10.1016/j.intermet.2021.107132 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/25437 |
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