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On the growth of martensite in steel
Luleå tekniska universitet.
Technical University of Denmark.
1980 (English)In: Acta Metallurgica, ISSN 0001-6160, Vol. 28, no 9, p. 1229-1234Article in journal (Refereed) Published
Abstract [en]

Criteria based on minimum energy and maximum stress considerations have been developed for the first stages of growth of martensite in steel. It is shown that the critical size of nucleus at which dislocation-assisted growth can occur is about 25 nm diameter. The mode of growth governing low carbon lath martensite forming on {111} austenite habit planes is found to be fundamentally different from that of plate martensite which forms on irrational habit planes. A mechanism for lath thickening and growth is advanced in which dislocations nucleate at the thickest section of the lath and then follow after the coherent leading edge of the lath to generate ledges. Plate growth on the other hand can occur by the formation of twins which nucleate and thicken laterally behind the coherent leading edge of the plate

Place, publisher, year, edition, pages
1980. Vol. 28, no 9, p. 1229-1234
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-2405DOI: 10.1016/0001-6160(80)90078-4ISI: A1980KH18400007Local ID: 00660f70-ec36-11dc-9508-000ea68e967bOAI: oai:DiVA.org:ltu-2405DiVA, id: diva2:975257
Note

Godkänd; 1980; 20080307 (cira)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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