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Effect of Degassing and Grain Refinement on Hot Tearing Tendency in Al8Si3Cu Alloy

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Abstract

The effect of melt quality on hot tearing susceptibility of Al8Si3Cu alloy was examined under six different conditions, by using a traditional T-shaped mold. Grain refinement was carried out by two different modifiers: AlTi5B1 and Al3B. For each test, samples were cast before and after degassing of melt. Therefore, a new hot tearing tendency index was developed by both bifilm calculations and porosity that occurred in the middle of T-zone of casting parts. Results indicated that hot tearing of cast aluminum alloys was a complex phenomenon, and bifilms play a major role, especially by compensating for shrinkage and consequently contributing to the inconsistencies in results.

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Acknowledgements

This work has been supported by the Scientific Research Projects Coordination Unit of Selcuk University (Project Number: 13101026). Author would like to thank TUBITAK (Turkey) for its support. Special thanks to Murat Akcin from Magmasoft Turkey.

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Authors and Affiliations

  1. Metallurgical and Materials Engineering, Bursa Technical University, Bursa, Turkey

    Muhammet Uludağ

  2. Engineering Faculty, Karatay University, Konya, Turkey

    Remzi Çetin

  3. Engineering Faculty, Istanbul University, Avcılar Kampüsü, Istanbul, Turkey

    Derya Dispinar

  4. School of Engineering, University of North Florida, Jacksonville, FL, USA

    Murat Tiryakioğlu

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  1. Muhammet Uludağ
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  2. Remzi Çetin
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  3. Derya Dispinar
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  4. Murat Tiryakioğlu
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Correspondence to Muhammet Uludağ.

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Uludağ, M., Çetin, R., Dispinar, D. et al. Effect of Degassing and Grain Refinement on Hot Tearing Tendency in Al8Si3Cu Alloy. Inter Metalcast 12, 589–595 (2018). https://doi.org/10.1007/s40962-017-0197-9

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