naa a22 4500 510770312 CHVBK 20180411083211.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11837-013-0687-z doi (NATIONALLICENCE)springer-10.1007/s11837-013-0687-z Nucleation, Growth, and Aggregation of Alumina Inclusions in Steel [Elektronische Daten] [Wen Yang, Haojian Duan, Lifeng Zhang, Ying Ren] Whether a nonmetallic inclusion is detrimental to steel properties or not depends on its size. The final size of an inclusion in steel is influenced by several factors, including nucleation, growth, and aggregation. In the current work, the thermodynamics for homogeneous nucleation of alumina was calculated, and the three-dimensional alumina morphologies after Al deoxidation were observed in laboratory. It is indicated by the calculation that, when the interfacial tension between steel melt and alumina is higher or the nucleus radius is larger, it is harder for alumina to nucleation. One minute after the deoxidation, many single-alumina particles with different shapes, including spherical, dendritic, flower, plate-like, and irregular, were observed. The formation of various shapes is due to different growth mechanisms. During the holding process after deoxidation, several types of aggregation morphologies were observed, such as disorderly type and regular type. Owing to the effects of sintering and Ostwald ripening, the aggregated inclusions changed from angular shape to smooth coral shape. TMS, 2013 Yang Wen School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut Duan Haojian School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut Zhang Lifeng School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut Ren Ying School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut JOM Springer US; http://www.springer-ny.com 65/9(2013-09-01), 1173-1180 1047-4838 65:9<1173 2013 65 11837 https://doi.org/10.1007/s11837-013-0687-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-013-0687-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang Wen School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Duan Haojian School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Lifeng School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Ren Ying School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/9(2013-09-01), 1173-1180 1047-4838 65:9<1173 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer