Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers
Aluminium-Silicon (Al-Si) alloy has been regarded as an alloy system that prefers brittle mode of fracture. The brittleness of the alloy can be attributed to the sharp needle-like eutectic Si and hard brittle β-Fe phase that deteriorates the mechanical properties of the alloy. In an attempt to impro...
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my-mmu-ep.69012017-09-07T11:16:58Z Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers 2015-06 Kong, Hao Jie TN600-799 Metallurgy Aluminium-Silicon (Al-Si) alloy has been regarded as an alloy system that prefers brittle mode of fracture. The brittleness of the alloy can be attributed to the sharp needle-like eutectic Si and hard brittle β-Fe phase that deteriorates the mechanical properties of the alloy. In an attempt to improve the microstructure of the Al-Si alloy, in this study, six combinations of hybrid modifiers (at 0.02wt.%), namely, Sodium-Boron (Na-B), Sodium-Titanium (Na-Ti), Strontium-Boron (Sr-B), Sodium-Strontium (Na-Sr), Strontium-Titanium (Sr-Ti), and Titanium-Boron (Ti-B) were added to the base Al-Si alloy (unmodified LM6). The addition of hybrid modifiers was performed outside the furnace, through ladle metallurgy. A systematic study was performed to study the density, microstructure, hardness, and tensile properties of the unmodified and hybrid modified LM6. In the density test conducted through Achimedes’ principle, Na-based hybrid modified LM6, such as Na-B and Na-Ti achieved the highest density at 2.747g/cm3. The result tallies with the greatest hardness measured in these alloys among the rest. 2015-06 Thesis http://shdl.mmu.edu.my/6901/ http://library.mmu.edu.my/diglib/onlinedb/dig_lib.php masters Multimedia University Faculty of Engineering and Technology |
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MMU Institutional Repository |
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TN600-799 Metallurgy |
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TN600-799 Metallurgy Kong, Hao Jie Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers |
| description |
Aluminium-Silicon (Al-Si) alloy has been regarded as an alloy system that prefers brittle mode of fracture. The brittleness of the alloy can be attributed to the sharp needle-like eutectic Si and hard brittle β-Fe phase that deteriorates the mechanical properties of the alloy. In an attempt to improve the microstructure of the Al-Si alloy, in this study, six combinations of hybrid modifiers (at 0.02wt.%), namely, Sodium-Boron (Na-B), Sodium-Titanium (Na-Ti), Strontium-Boron (Sr-B), Sodium-Strontium (Na-Sr), Strontium-Titanium (Sr-Ti), and Titanium-Boron (Ti-B) were added to the base Al-Si alloy (unmodified LM6). The addition of hybrid modifiers was performed outside the furnace, through ladle metallurgy. A systematic study was performed to study the density, microstructure, hardness, and tensile properties of the unmodified and hybrid modified LM6. In the density test conducted through Achimedes’ principle, Na-based hybrid modified LM6, such as Na-B and Na-Ti achieved the highest density at 2.747g/cm3. The result tallies with the greatest hardness measured in these alloys among the rest. |
| format |
Thesis |
| qualification_level |
Master's degree |
| author |
Kong, Hao Jie |
| author_facet |
Kong, Hao Jie |
| author_sort |
Kong, Hao Jie |
| title |
Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers |
| title_short |
Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers |
| title_full |
Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers |
| title_fullStr |
Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers |
| title_full_unstemmed |
Ladle Metallurgy of Aluminium-Silicon Alloy with Hybrid Modifiers |
| title_sort |
ladle metallurgy of aluminium-silicon alloy with hybrid modifiers |
| granting_institution |
Multimedia University |
| granting_department |
Faculty of Engineering and Technology |
| publishDate |
2015 |
| _version_ |
1747829644538675200 |