İkiz Merdaneli Döküm Yönteminde St/Cu Shell Çifti İle Üretilen 5005 Alüminyum Alaşımlarının Üretim Parametreleri, Mekanik Özellikleri ve Mikroyapılarının İncelenmesi
Öz
Bu çalışma, yassı mamül üretim yöntemlerinden biri olan ikiz merdaneli döküm yönteminde katılaşmanın meydana geldiği merdaneler üzerine gerçekleştirilmiştir. Katılaşmanın meydana geldiği merdaneler kor ve shell olmak üzere iki bileşenden oluşmaktadır ve kor ile shell arasında dolaşan su ile de shell malzemesi soğutulmaktadır. Shell ile kor malzemesi birbirine sıkı geçme yöntemiyle geçirilmektedir. Döküm merdaneler katılaşma esnasında yüksek yüklere ve termal çevrime maruz kaldığından yaygın olarak shell malzemesi olarak alaşımlı dövme çelik kullanılmaktadır. Bakır elementinin çeliğe nazaran ısıl iletkenlik katsayısı çok daha yüksek olduğu bilinmektedir. Bu nedenle hem katılaşmanın hızlı gerçekleşmesi hemde productivite artışı gibi malzeme ve üretimi etkileyen özelliklerden dolayı çelik yerine bakır shell malzemesi de endüstriyel olarak kulanılmaktadır. Bu tez çalışmasında, alaşımlı çelik/çelik shell yerine, üst merdanede çelik alt merdanede ise berilyum alaşımlı dövme bakır shell çifti kullanılmış ve bu shell çiftinin 5005 alüminyum alaşımı üretimindeki parametreler, mikroyapılar ve mekanik özelliklerine etkisi incelenmiştir.
Anahtar Kelimeler
İkiz Merdaneli Döküm İMD Bakır Shell Rekristalizasyon Alüminyum
Destekleyen Kurum
ASAŞ Alüminyum San. ve Tic. A.Ş.
Teşekkür
Samet SEVİNÇ ve Ahmet BİCAT
Kaynakça
- Kammer, C., “Aluminum and Aluminum Alloys”, 161-197., Berlin, 2018. Gülver, M., Meydanoglu, O., Işıksaçan, C., “Softening Behavior of Direct Chill and Twin-Roll Cast AA 3105 Alloy”, In Light Metals, Springer International Publishing, Pages 1143-1147, 2019.
- Engler, O., Schäfer, C., Brinkman, H.J., Brecht, J., Beiter, P., Nijhof, K., “Flexible rolling of aluminum alloy sheet—Process optimization and control of materials properties”, J Mater Process Technol, Vol. 229, Pages 139-148, 2016.
- Dündar, M., Beyhan, B., Birbaşar, O., Altuner, H.M., Işıksaçan, C., “Surface Crack Characterization of Twin Roll Caster Shells and Its Influence on As-Cast Strip Surface Quality”, Light Metals, Vol. 2013, Pages 491-495, 2016.
- Spathis, D., Clemente, A., Tsiros, J., Arvanitis, A., Wobker, H.G., “The use of copper shells by Twin Roll Strip Casters”, TMS Light Metals, Mar. 2010.
- Denizli, F., Birbaşar, O., Dündar, K., Özçetin, Y., Ulus, A., İnel, C., “Characterization of 8006 Aluminum Alloy Casted by TRC Technology with Steel–Steel and Copper–Copper Roll Pairs”, In TMS Annual Meeting & Exhibition, Pages 1050-1053, 2023.
- Recrystallization and Related Annealing Phenomena. Elsevier, 2004.
- Birol, Y., “Recrystallization of a supersaturated Al–Mn alloy”, Scr Mater, Vol. 59, Issue 6, Pages 611-614, 2008.
- Lifshitz, I.M., Slyozov, V.V., “The kinetics of precipitation from supersaturated solid solutions”, Journal of Physics and Chemistry of Solids, Vol. 19, Issue 1-2, Pages 35-50, 1961.
- Ratke, L., Voorhees, P.W., “Growth and Coarsening”, Berlin, Heidelberg: Springer Berlin Heidelberg, 2002.
- Raougui, A., Yildiz, K., “Investigation of recrystallization kinetics of AA5005 sheets after rolling by thermal analysis”, Master of Science Thesis, Sakarya University, Sakarya, 2021.
- Iqra Zubair Awan, I.Z.A., “Recovery, Recrystallization, and Grain-Growth”, Journal of the chemical society of pakistan, Vol 41, Issue 1, Pages 1-1, 2019.
- Jo, Y.H., et al., “Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting”, Journal of Materials Research and Technology, Vol. 26, Pages 8010-8024, 2023.
- Zhang, J., Yuan, H., Zhang, T., Fu, J., Xu, G., Li, Y., “A novel approach to improve the macro-segregation defect and mechanical properties of Al–Mg–Mn aluminum alloys during twin-roll continuous casting”, Journal of Materials Research and Technology, Vol. 22, Pages 3170-3179, 2023.
- Mohammadi, A., Enikeev, N.A., Murashkin, M.Yu., Arita, M., Edalati, K., “Developing age-hardenable Al-Zr alloy by ultra-severe plastic deformation: Significance of supersaturation, segregation and precipitation on hardening and electrical conductivity”, Acta Mater, Vol. 203, Pages 116503, 2021.
Investigation of Production Parameters, Mechanical Properties and Microstructures of 5005 Aluminium Alloys Produced by St/Cu Shell Pair in TRC
Öz
This study was carried out on the rollers where solidification occurs in the twin-roll casting method, which is one of the flat product production methods. The rollers where solidification occurs consist of two components, core and shell, and the shell material is cooled by water circulating between the core and shell. The shell and the core material are connected to each other using a shrink-fitting method. Since cast rolls are exposed to high loads and thermal cycles during solidification, alloy forged steel is commonly used as the shell material. It is known that the copper element has a much higher thermal conductivity coefficient than steel. For this reason, copper shell material can be used industrially instead of steel due to the properties that affect the material and production, such as rapid solidification and increase in productivity. In this thesis study, instead of alloy steel/steel shell, a steel shell pair was used in the upper roll and a beryllium alloy forged copper shell pair was used in the lower roll, and the effects of this shell pair on the parameters, microstructures and mechanical properties in the production of 5005 aluminum alloy were examined.
Anahtar Kelimeler
Twin Roll Casting TRC Copper Shell Recrystallization Aluminium
Kaynakça
- Kammer, C., “Aluminum and Aluminum Alloys”, 161-197., Berlin, 2018. Gülver, M., Meydanoglu, O., Işıksaçan, C., “Softening Behavior of Direct Chill and Twin-Roll Cast AA 3105 Alloy”, In Light Metals, Springer International Publishing, Pages 1143-1147, 2019.
- Engler, O., Schäfer, C., Brinkman, H.J., Brecht, J., Beiter, P., Nijhof, K., “Flexible rolling of aluminum alloy sheet—Process optimization and control of materials properties”, J Mater Process Technol, Vol. 229, Pages 139-148, 2016.
- Dündar, M., Beyhan, B., Birbaşar, O., Altuner, H.M., Işıksaçan, C., “Surface Crack Characterization of Twin Roll Caster Shells and Its Influence on As-Cast Strip Surface Quality”, Light Metals, Vol. 2013, Pages 491-495, 2016.
- Spathis, D., Clemente, A., Tsiros, J., Arvanitis, A., Wobker, H.G., “The use of copper shells by Twin Roll Strip Casters”, TMS Light Metals, Mar. 2010.
- Denizli, F., Birbaşar, O., Dündar, K., Özçetin, Y., Ulus, A., İnel, C., “Characterization of 8006 Aluminum Alloy Casted by TRC Technology with Steel–Steel and Copper–Copper Roll Pairs”, In TMS Annual Meeting & Exhibition, Pages 1050-1053, 2023.
- Recrystallization and Related Annealing Phenomena. Elsevier, 2004.
- Birol, Y., “Recrystallization of a supersaturated Al–Mn alloy”, Scr Mater, Vol. 59, Issue 6, Pages 611-614, 2008.
- Lifshitz, I.M., Slyozov, V.V., “The kinetics of precipitation from supersaturated solid solutions”, Journal of Physics and Chemistry of Solids, Vol. 19, Issue 1-2, Pages 35-50, 1961.
- Ratke, L., Voorhees, P.W., “Growth and Coarsening”, Berlin, Heidelberg: Springer Berlin Heidelberg, 2002.
- Raougui, A., Yildiz, K., “Investigation of recrystallization kinetics of AA5005 sheets after rolling by thermal analysis”, Master of Science Thesis, Sakarya University, Sakarya, 2021.
- Iqra Zubair Awan, I.Z.A., “Recovery, Recrystallization, and Grain-Growth”, Journal of the chemical society of pakistan, Vol 41, Issue 1, Pages 1-1, 2019.
- Jo, Y.H., et al., “Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting”, Journal of Materials Research and Technology, Vol. 26, Pages 8010-8024, 2023.
- Zhang, J., Yuan, H., Zhang, T., Fu, J., Xu, G., Li, Y., “A novel approach to improve the macro-segregation defect and mechanical properties of Al–Mg–Mn aluminum alloys during twin-roll continuous casting”, Journal of Materials Research and Technology, Vol. 22, Pages 3170-3179, 2023.
- Mohammadi, A., Enikeev, N.A., Murashkin, M.Yu., Arita, M., Edalati, K., “Developing age-hardenable Al-Zr alloy by ultra-severe plastic deformation: Significance of supersaturation, segregation and precipitation on hardening and electrical conductivity”, Acta Mater, Vol. 203, Pages 116503, 2021.
Ayrıntılar
| Birincil Dil | İngilizce |
|---|---|
| Konular | Döküm Teknolojileri, Malzeme Üretim Teknolojileri, Metaller ve Alaşım Malzemeleri |
| Bölüm | Araştırma Makalesi |
| Yazarlar | |
| Yayımlanma Tarihi | 26 Nisan 2024 |
| Gönderilme Tarihi | 2 Nisan 2024 |
| Kabul Tarihi | 25 Nisan 2024 |
| Yayımlandığı Sayı | Yıl 2024 Cilt: 1 Sayı: 1 |
