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Evaluation of deformed MnS in different industrial steels by using electrolytic extraction
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
Abstract [en]

The inclusions have a different chemical composition and give the steel different mechanical properties. These inclusions affect several properties of steel. In order to understand how the inclusions will affect the steel properties, the electrolytic extraction of 3D investigate method is applied on the steel grade of 42CrMo4. Then follow with Scanning Electron Microscope (SEM) observation. Steel samples from both ingot and rolling with and without heat treatment are observed and compared with different ratios.

The result shown that, heat treatment can be applied for removing carbides successfully. And most inclusions are belonging to Type RS which is rod like MnS. The percentage of broken particles can be up to 80%, which means that the reason for the inclusions broken should be find. And heat treatment can affect the characteristics of elongated MnS.

Place, publisher, year, edition, pages
2017. , p. 47
Keywords [en]
Non-metallic inclusions, Electrolytic Extraction, Scanning Electron Microscope, Inclusion characterisation, Steel
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-217880OAI: oai:DiVA.org:kth-217880DiVA, id: diva2:1158204
Subject / course
Materials Science and Engineering
Educational program
Master of Science - Materials Science and Engineering
Supervisors
Examiners
Available from: 2017-11-29 Created: 2017-11-17 Last updated: 2017-11-29Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
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  • nn-NO
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Output format
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