Micromechanical Modeling of Two-Phase Steels
2001 (English)In: Materials Research Society Symposium - Proceedings, 2001, Vol. 653, Z8.8.1-Z8.8.6- p.Conference paper (Refereed)
A two-dimensional micromechanical model based on the finite element method is presented to model two-phase ferritic/pearlitic steels, by aid of generalised plane strain elements. A periodic representative cell containing 100 ferrite grains, and the desired fraction pearlite is used. By applying periodic boundary conditions, loading by an average stress or strain state is possible. Uniaxial tensile tests were performed on specimens containing the ferrite and pearlite microstructures, and on two-phase materials containing 25% and 58% pearlite respectively. The stress-strain data of the pearlite material is used to fit a laminar dependent Taylor relation to represent the pearlite workhardening. Thereafter, laminar spacings in the two-phase materials are measured, and the total stress-strain response of the materials is modelled. Comparisons between generated data and experiments show good agreement up to a strain of 2%.
Place, publisher, year, edition, pages
2001. Vol. 653, Z8.8.1-Z8.8.6- p.
Materials Research Society Symposium - Proceedings, ISSN 0272-9172 ; 653
Boundary conditions, Composite micromechanics, Ferrite, Finite element method, Hardening, Mathematical models, Metallographic microstructure, Pearlite, Scanning electron microscopy, Strain, Stresses, Tensile testing
Research subject Solid Mechanics
IdentifiersURN: urn:nbn:se:kth:diva-196751ScopusID: 2-s2.0-17044446136OAI: oai:DiVA.org:kth-196751DiVA: diva2:1048279
Multiscale Modeling of Materials-2000, Boston, MA, United States, 27 November 2000 through 1 December 2000
QC 201611222016-11-212016-11-212016-11-22Bibliographically approved