Behavior of nonmetallic inclusions in front of the solid-liquid interface in low-carbon steels View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2000-10

AUTHORS

Sei Kimura, Y. Nabeshima, K. Nakajima, S. Mizoguchi

ABSTRACT

The present study is concerned with the interaction phenomena of nonmetallic inclusions in front of a moving solid-liquid interface. The in situ observation was done in a high-temperature experiment by using a laser microscope. Alumina inclusions in an aluminum-killed steel with low oxygen content exhibited the well-known clustering behavior. The velocity of the advancing interface first increased while approaching the particle, but became stagnant during engulfment and increased again after that. Alumina-magnesia complex inclusions in a magnesium-added steel with high oxygen content were very finely dispersed in the molten pool. These inclusions escaped from the advancing interface during solidification, but gathered again at the retreating interface during remelting. The tiny inclusions were thought to behave just as tracer particles of a local flow. The velocity of particles was measured on a video image, and the significant acceleration or deceleration was found near the interface. It was concluded that the flow was induced by the Marangoni effect due to the local difference in temperature and oxygen content in front of the interface, particularly in the case of a higher oxygen content. However, the flow was weak in the case of a low oxygen content. More... »

PAGES

1013-1021

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11663-000-0077-0

DOI

http://dx.doi.org/10.1007/s11663-000-0077-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1015436338


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