Role of carbon and alloying elements in the formation of bainitic ferrite
2004 (English)In: Metallurgical and Materials Transactions. A, ISSN 1073-5623, E-ISSN 1543-1940, Vol. 35A, no 12, 3693-3700 p.Article in journal (Refereed) Published
One approach to the prediction of the carbon content of austenite, remaining after the precipitation of bainitic ferrite, is based on the assumption that bainitic ferrite during growth inherits the carbon content of the parent austenite. An alternative approach is based on the assumption that bainitic ferrite grows with a low carbon content and there is no major difference between Widmanstatten ferrite and bainitic ferrite. The two approaches are now compared using information from alloyed steels with considerable amounts of Si, where the formation of cementite is retarded. The former approach does not account for the effect of Mn and fails severely at low alloy contents. The latter approach seems more promising but is not without difficulties. In particular, in order to explain the effects of Cr and Mo, it seems necessary to introduce a kinetic effect, presumably caused by solute drag.
Place, publisher, year, edition, pages
2004. Vol. 35A, no 12, 3693-3700 p.
stretch-flangeability, sheet steels, austenite, mechanism, model
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-23921ISI: 000225448100006ScopusID: 2-s2.0-11944252713OAI: oai:DiVA.org:kth-23921DiVA: diva2:342620
QC 20100525 QC 201109232010-08-102010-08-102011-09-23Bibliographically approved