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Title: Assessment of separation and agglomerationt tendency of non-metallic inclusions in an electromagnetically stirred aluminum melt
Authors: Li, Cong
Dang, Thien
Gökelma, Mertol
Zimmermann, Sebastian
Mitterecker, Jonas
Friedrich, Bernd
Keywords: Agglomeration
Melt cleanliness
Non-metallic inclusions
Aluminum compounds
Magnesium compounds
Titanium compounds
Publisher: Springer
Abstract: Presence of non-metallic inclusions (NMIs) reduces surface quality and mechanical properties of aluminum products. The development of good NMIs removal practices relies on the understanding of inclusion behaviors with respect to separation and agglomeration particularly in the turbulent flow. In the scenario of electromagnetically induced recirculated turbulent flow, the concerned behaviors of inclusions with different sizes have rarely been investigated experimentally. In the presented study funded by AMAP Open Innovation Research Cluster, reference materials were prepared with uniformly distributed NMIs (SiC and MgAl2O4) via an ultrasound-involved casting route. Reference materials were charged into an aluminum melt where turbulent flow was promoted via electromagnetic force. Microscopical analysis shows non-significant agglomeration tendency of SiC, MgAl2O4, and TiB2 inclusion. Time-weight filtration curve, PoDFA, and Spark Spectrometer results suggest a strong dependence of separation rate on particle size. Analytical models were established to estimate the collision rate of particles and to evaluate separation probability of different sized particles. © 2023, The Minerals, Metals & Materials Society.
Description: Light Metals Symposium held at the TMS Annual Meeting and Exhibition, TMS 2023 --19 March 2023 through 23 March 2023 -- 291759
ISBN: 9783031225314
ISSN: 2367-1181
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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