NDLI: Characteristics of inclusions in high-Al steel during electroslag remelting process

Content Provider	Springer Nature Link
Author	Shi, Cheng bin Chen, Xi chun Guo, Han jie
Copyright Year	2012
Abstract	The characteristics of inclusions in high-Al steel refined by electroslag remelting (ESR) were investigated by image analysis, scanning electron microscopy (SEM), and energy-dispersive spectrometry (EDS). The results show that the size of almost all the inclusions observed in ESR ingots is less than 5 μm. Inclusions smaller than 3 μm take nearly 75% of the total inclusions observed in each ingot. Inclusions observed in ESR ingots are pure AlN as dominating precipitates and some fine spherical Al$_{2}$O$_{3}$ inclusions with a size of 1 μm or less. It is also found that protective gas operation and slag deoxidation treatment during ESR process have significant effects on the number of inclusions smaller than 2 μm but little effects on that of inclusions larger than 2 μm. Thermodynamic calculations show that AlN inclusions are unable to precipitate in the liquid metal pool under the present experimental conditions, while the precipitation of AlN inclusions could take place at the solidifying front due to the microsegregation of Al and N in liquid steel during solidification.
Starting Page	295
Ending Page	302
Page Count	8
File Format	PDF
ISSN	16744799
Journal	International Journal of Minerals, Metallurgy, and Materials
Volume Number	19
Issue Number	4
e-ISSN	1869103X
Language	English
Publisher	University of Science and Technology Beijing
Publisher Date	2012-03-28
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	electroslag remelting aluminum nitride inclusions thermodynamics Materials Science Metallic Materials Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Mechanics of Materials Metals and Alloys Geochemistry and Petrology Mechanical Engineering

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