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Examination of inclusion size distributions in duplex stainless steel using electrolytic extraction
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Nowadays due to large demand for clean and defect-free steels, several techniques based on different characteristics of particles are applied to investigate the steel cleanness. Outokumpu Stainless AB in Avesta has performed extensive work in this field by applying several methods, which all of them have specific advantages and limitations. However, it is necessary to find an accurate technique to investigate real properties of inclusions in duplex stainless steels. For routine analytical methods, calibration and parameters adjustment can be followed by help of these investigation results.

The aim of present work is to apply automated INCA-Feature method for controlling cleanness of LDX 6112 duplex stainless steels after electrolytic extractions (EE) as a reference method. Three methods of investigations, INCA-Feature on polished samples as two-dimensional and on film-filter as three-dimensional and EE as three-dimensional analyses, were compared. The results of comparison between running INCA-Feature on polished samples and film filters show an acceptable agreement which proves the possibility of performing EE on this steel grade and using INCA-Feature for investigating this as a fast method. These methods are compared statistically and quantitative results are reported in details. 

Place, publisher, year, edition, pages
2010.
Keyword [en]
Inclusion, SEM-INCA, Electrolytic Extraction, Duplex Stainless Steel, Three dimensional, Two dimensional
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-161750OAI: oai:DiVA.org:kth-161750DiVA: diva2:795602
External cooperation
Outokumpu Stainlass AB
Educational program
Master of Science - Engineering Materials Science
Presentation
(English)
Supervisors
Examiners
Available from: 2015-09-10 Created: 2015-03-16 Last updated: 2016-01-12Bibliographically approved

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inclusion size distributions(1662 kB)166 downloads
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf