Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Bilimleri Enstitüsü, Metallurgical and Materials Engineering, Türkiye
Tezin Onay Tarihi: 2019
Tezin Dili: İngilizce
Öğrenci: CANSIN ÇEHİZ
Asıl Danışman (Eş Danışmanlı Tezler İçin): Ali Kalkanlı
Eş Danışman: Muhsine Bilge İmer
Özet:Although nodular cast iron grades have mechanical properties competitive with plain carbon steel grades, they have advantage in terms of price due to relatively low raw material and energy costs. Therefore, they are widely used in various industries, especially in automotive, machinery, piping and wind power industries. High number of process variables affecting the solidification behavior of nodular cast iron melt makes it difficult to ensure the resulting microstructure, thus the performance of nodular cast iron products. Cooling curve thermal analysis and oxygen activity analysis are two industrially applicable methods which are considered to have a potential of providing information on the solidification behavior of nodular cast iron melt. In this study, chemical composition, cooling curve thermal analysis and oxygen activity analysis data were collected from the usual production process of Ferromatrix NV iron foundry in Kortrijk, Belgium. The collected samples were subjected to metallographic evaluation and tensile test in order to obtain data on the resulting microstructure and mechanical performance. The alloy EN-GJS-400-18 which is a ferritic nodular cast iron grade with high ductility, and the alloy EN-GJS-600-10C which is a solution strengthened ferritic nodular cast iron grade with both high strength and high ductility were examined. By processing the collected data, conclusions on the relation of the parameters with each other and their variation between the two alloy grades and between different inoculant additions were done.