In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser Microscopy

Non-metallic inclusions (NMIs) in steels have been the focus of various experimental studies due to their detrimental character. While isolated processes, such as agglomeration or dissolution, have been well investigated, holistic in-situ views with high-temperature confocal scanning laser microscop...

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Main Authors: Julian Cejka, Susanne Katharina Michelic
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/13/4/686
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author Julian Cejka
Susanne Katharina Michelic
author_facet Julian Cejka
Susanne Katharina Michelic
author_sort Julian Cejka
collection DOAJ
description Non-metallic inclusions (NMIs) in steels have been the focus of various experimental studies due to their detrimental character. While isolated processes, such as agglomeration or dissolution, have been well investigated, holistic in-situ views with high-temperature confocal scanning laser microscopy (HT-CSLM) have been rare. In this work a novel and suitable method is presented to simultaneously observe agglomeration, movement, detachment, and dissolution of non-metallic inclusions by combined the melting of steel and slag with a dual-crucible approach. Therefore, different steel/slag combinations were tested. It is shown that, with transparent that does not become tarnished by the ions stemming from the steel, the steel’s surface and non-metallic inclusions are observable. Furthermore, technological limitations are discussed, including restrictions regarding the melting point of steels and certain steel/slag combinations.
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spelling doaj.art-eb6229aa1ce743ff8305ccd4f5dbe6c82023-11-17T20:26:14ZengMDPI AGMetals2075-47012023-03-0113468610.3390/met13040686In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser MicroscopyJulian Cejka0Susanne Katharina Michelic1Christian Doppler Laboratory for Inclusion Metallurgy in Advanced Steelmaking, Montanuniversitaet Leoben, 8700 Leoben, AustriaChristian Doppler Laboratory for Inclusion Metallurgy in Advanced Steelmaking, Montanuniversitaet Leoben, 8700 Leoben, AustriaNon-metallic inclusions (NMIs) in steels have been the focus of various experimental studies due to their detrimental character. While isolated processes, such as agglomeration or dissolution, have been well investigated, holistic in-situ views with high-temperature confocal scanning laser microscopy (HT-CSLM) have been rare. In this work a novel and suitable method is presented to simultaneously observe agglomeration, movement, detachment, and dissolution of non-metallic inclusions by combined the melting of steel and slag with a dual-crucible approach. Therefore, different steel/slag combinations were tested. It is shown that, with transparent that does not become tarnished by the ions stemming from the steel, the steel’s surface and non-metallic inclusions are observable. Furthermore, technological limitations are discussed, including restrictions regarding the melting point of steels and certain steel/slag combinations.https://www.mdpi.com/2075-4701/13/4/686HT-CLSMnon-metallic inclusionssteel/slag interfacein-situ observationcleanness
spellingShingle Julian Cejka
Susanne Katharina Michelic
In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser Microscopy
Metals
HT-CLSM
non-metallic inclusions
steel/slag interface
in-situ observation
cleanness
title In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser Microscopy
title_full In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser Microscopy
title_fullStr In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser Microscopy
title_full_unstemmed In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser Microscopy
title_short In-Situ Observation of Steel/Slag/Inclusion Interaction by Means of High-Temperature Confocal Scanning Laser Microscopy
title_sort in situ observation of steel slag inclusion interaction by means of high temperature confocal scanning laser microscopy
topic HT-CLSM
non-metallic inclusions
steel/slag interface
in-situ observation
cleanness
url https://www.mdpi.com/2075-4701/13/4/686
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AT susannekatharinamichelic insituobservationofsteelslaginclusioninteractionbymeansofhightemperatureconfocalscanninglasermicroscopy