| For the study of strengthened of cast iron, the effect of aluminum on the structure and mechanical property has been investigated with variation of the amount of aluminum addition. It is studied for the addition of aluminum to the effect of addition method, addition amount, variation of composition, and mechanical property. Through this study, following results are obtained. 1) Aluminum addition before inoculation are more effective on microstructure and mechanical property than after inoculation. 2) 0.75% addition of Aluminum is the best of microstructure and mechanical property. 3) In case of same amount of Aluminum addition, separate addition is more effective in mechanical property and due to Aluminum that helps the inoculation effectively. 4) In case of same C.E., the less silicon content the more increase amount of Aluminum required in graphtization. |
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