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The Role of Grain Boundary Diffusion in Initial Selective Oxidation Kinetics of a Manganese-Aluminum TRIP Steel
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh.
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh.
2005 (English)In: Journal of Phase Equilibria and Diffusion, ISSN 1547-7037, Vol. 26, no 5, 539-546 p.Article in journal (Refereed) Published
Abstract [en]

Confocal scanning laser microscopy (CSLM) was used in real-time observation of alloy element oxidation of a manganese/aluminum transformation induced plasticity (TRIP) steel. CSLM images reveal a marked role of grain boundaries in the overall initial oxidation kinetics of the alloy and consequently in the morphology of the initial surface oxide. Changing the grain size and the oxidation temperature results in a change in the overall kinetics of selective oxidation and in the importance of oxidation at grain boundaries, respectively. Electron backscattered diffraction mapping was used to characterize the grain boundaries intersecting the surface over an area of the alloy. Subsequent CSLM observation of selective oxidation over the same area allowed quantification of oxidation kinetics as a function of individual grain boundary misorientation.

Place, publisher, year, edition, pages
2005. Vol. 26, no 5, 539-546 p.
Keyword [en]
Electron diffraction, Grain boundaries, Morphology, Oxidation, Plasticity, Reaction kinetics, Confocal scanning laser microscopy (CSLM), Selective oxidation, Surface oxides, Transformation induced plasticity (TRIP)
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-8547DOI: 10.1361/154770305X66691ISI: 000232570000023OAI: oai:DiVA.org:kth-8547DiVA: diva2:13900
Note
QC 20100914. Uppdaterad från submitted till published (20100914).Available from: 2008-06-02 Created: 2008-06-02 Last updated: 2010-11-25Bibliographically approved
In thesis
1. Grain Boundary Ridge Formation during High Temperature Oxiditation of Manganese Containing Steels
Open this publication in new window or tab >>Grain Boundary Ridge Formation during High Temperature Oxiditation of Manganese Containing Steels
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2008. 42 p.
Keyword
grain boundary ridges, TRIP-steel, IF-steel, recrystalization, hight temperature oxidation, selective oxidation grain boundary diffusion, grain boundary segregation, Mn
National Category
Metallurgy and Metallic Materials
Identifiers
urn:nbn:se:kth:diva-4778 (URN)978-91-7415-000-1 (ISBN)
Public defence
2008-06-05, Sal D3, KTH, Lindstedtsvägen 5 entréplan, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20100927Available from: 2008-06-02 Created: 2008-06-02 Last updated: 2010-09-27Bibliographically approved
2. Grain boundary ridge formation during initial high temperature oxidation of Mn/Al TRIP steel
Open this publication in new window or tab >>Grain boundary ridge formation during initial high temperature oxidation of Mn/Al TRIP steel
2006 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2006. 19 p.
Series
KTH/MSE--06/17--SE+THMETU AVH
National Category
Other Materials Engineering
Identifiers
urn:nbn:se:kth:diva-4081 (URN)91-7178-334-2 (ISBN)
Presentation
2006-04-28, B3, KTH, Brinellvägen 23, Stockholm, 10:00
Note
QC 20101125Available from: 2006-08-23 Created: 2006-08-23 Last updated: 2010-11-25Bibliographically approved

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