Effect of SiMg alloy on inclusions and microstructures of 16Mn steel

The effects of cooling methods and Mg content on the inclusions and microstructures of 16Mn steel were observed, and the mechanism of intragranular ferrite nucleation induced by Mg containing inclusions is discussed. The results show that trace amounts of Mg in steel can induce intragranular ferrite...

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Veröffentlicht in:Ironmaking & steelmaking Jg. 38; H. 8; S. 577 - 583
Hauptverfasser: Wen, B, Song, B, Pan, N, Hu, Q Y, Mao, J H
Format: Journal Article
Sprache:Englisch
Veröffentlicht: London, England Taylor & Francis 01.11.2011
SAGE Publications
Schlagworte:
Alloy steels
Carbon manganese steels
Cooling
Ferrite
Inclusions
Intragranular ferrite
Iron and steel making
Lattice disregistry
Magnesium
Microstructures
Nucleation
SiMg alloy
Steels
SiMg alloy
Intragranular ferrite
Microstructures
Lattice disregistry
Inclusions
ISSN:0301-9233, 1743-2812
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Zusammenfassung:The effects of cooling methods and Mg content on the inclusions and microstructures of 16Mn steel were observed, and the mechanism of intragranular ferrite nucleation induced by Mg containing inclusions is discussed. The results show that trace amounts of Mg in steel can induce intragranular ferrite nucleation. With increasing Mg content, the percentage of intragranular ferrite increases, while the optimum Mg content is ∼0·0048 wt-%. The appropriate cooling methods are furnace cooling to 1473 plus water cooling and water cooling. The lattice disregistry among MgAl 2 O 4 , MgO and ferrite-Fe phase is very small, and there is a Si enriched zone on the inclusions, which both contribute to the nucleation of intragranular ferrite.
Bibliographie:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0301-9233
1743-2812
DOI:10.1179/1743281211Y.0000000010