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Critical temperature for growth of martensite
KTH, Superseded Departments, Materials Science and Engineering.ORCID iD: 0000-0002-7656-9733
KTH, Superseded Departments, Materials Science and Engineering.
KTH, Superseded Departments, Materials Science and Engineering.ORCID iD: 0000-0002-4521-6089
1995 (English)In: Acta Metallurgica Et Materialia, ISSN 0956-7151, Vol. 43, no 3, 945-954 p.Article in journal (Refereed) Published
Abstract [en]

Ms may be defined as the temperature below which the formation of martensite starts upon cooling. It may also be useful to define Mg, the temperature below which martensite can grow if it is already nucleated. In order to analyze the mechanism of martensite formation, it is essential to know the difference Mg - Ms. We have tried to evaluate Mg - Ms for an Fe-C alloy with a decarburized surface zone in order to induce nucleation. The samples were studied by means of electron microprobe, serial sectioning and optical microscopy. The results indicate that Mg is surprisingly close to Ms. The possibility that Mg is controlled by growth rather than nucleation is discussed.

Place, publisher, year, edition, pages
Oxford: Pergamon , 1995. Vol. 43, no 3, 945-954 p.
Keyword [en]
Cooling; Grain boundaries; Growth (materials); Iron alloys; Nucleation; Optical microscopy; Phase transitions; Temperature; Critical temperature; Decarburized surface zone; Electron microprobe; Serial sectioning; Martensite
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-12504DOI: 10.1016/0956-7151(94)00311-5OAI: oai:DiVA.org:kth-12504DiVA: diva2:315557
Note
QC 20100429Available from: 2010-04-29 Created: 2010-04-29 Last updated: 2010-04-29Bibliographically approved
In thesis
1. Nucleation and growth of martensite in steel
Open this publication in new window or tab >>Nucleation and growth of martensite in steel
1997 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 1997. 41 p.
Keyword
martensite, Fe-alloys, α-martensite, athermal martensite, isothermal martensite, plate martensite, lath martensite, nucleation, growth, thermodynamics, plateau temperature, driving force, activation energy, bainite, Widmanstätten α, diffusive mechanism, displacive mechanism, ε-martensite
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-2583 (URN)91-7170-201-6 (ISBN)
Public defence
1997-11-28, 00:00 (English)
Note
QC 20100429Available from: 2000-01-01 Created: 2000-01-01 Last updated: 2010-04-29Bibliographically approved

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Borgenstam, Annika

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