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Effect of Zr additions on non-metallic inclusions in X11CrNiMo12 steel
ID Burja, Jaka (Author), ID Koležnik, Mitja (Author), ID Šetina Batič, Barbara (Author), ID Medved, Jože (Author)

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Abstract
The production of clean steel is associated with high-quality steel grades for demanding applications. The formation of oxide inclusions mainly depends on the deoxidation practice; it is usually carried out through Al additions, but alumina inclusions can have detrimental effects. An alternative zirconium inclusion modification was used in a creep-resistant steel to improve the cleanliness of laboratory-made steel. The thermodynamics behind the inclusion modification are presented, the reaction products are identified and the steel cleanliness improvement is quantified. The resulting influence of zirconium addition on non-metallic inclusions and mechanical properties is discussed. While the Zr additions drastically reduce the non-metallic inclusion size and area, additions above a certain amount result in the formation of zirconium nitrides that ultimately soften the martensitic steel due to the depletion of nitrogen in solid solution.

Language:English
Keywords:clean steel, non-metallic inclusions, Zr addition, creep-resistant steel, microstructure
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:NTF - Faculty of Natural Sciences and Engineering
Publication status:Published
Publication version:Version of Record
Year:2020
Number of pages:9 str.
Numbering:Vol. 10, iss. 9, art. 1183
PID:20.500.12556/RUL-134280 This link opens in a new window
UDC:621:669:67.017
ISSN on article:2075-4701
DOI:10.3390/met10091183 This link opens in a new window
COBISS.SI-ID:27175683 This link opens in a new window
Publication date in RUL:04.01.2022
Views:402
Downloads:92
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Record is a part of a journal

Title:Metals
Shortened title:Metals
Publisher:MDPI
ISSN:2075-4701
COBISS.SI-ID:15976214 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:02.09.2020

Secondary language

Language:Slovenian
Keywords:čisto jeklo, nekovinski vključki, Zr dodatek, jeklo proti lezenju, mikrostruktura

Projects

Funder:Other - Other funder or multiple funders
Funding programme:Republic of Slovenia
Acronym:ČMRLJ

Funder:EC - European Commission
Funding programme:European Regional Development Fund
Acronym:ČMRLJ

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