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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal for Multiscale Computational Engineering
Импакт фактор: 1.016 5-летний Импакт фактор: 1.194 SJR: 0.554 SNIP: 0.68 CiteScore™: 1.18

ISSN Печать: 1543-1649
ISSN Онлайн: 1940-4352

Выпуски:
Том 17, 2019 Том 16, 2018 Том 15, 2017 Том 14, 2016 Том 13, 2015 Том 12, 2014 Том 11, 2013 Том 10, 2012 Том 9, 2011 Том 8, 2010 Том 7, 2009 Том 6, 2008 Том 5, 2007 Том 4, 2006 Том 3, 2005 Том 2, 2004 Том 1, 2003

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.2017020395
pages 443-458

VALIDATION OF THE DUAL-PHASE STEEL FAILURE MODEL AT THE MICROSCALE

Konrad Perzyński
Department of Applied Computer Science and Modeling, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Cracow, Poland
Yuriy Ososkov
U.S. Steel Canada, Hamilton, Ontario, Canada
David S. Wilkinson
Materials Science & Engineering Department, McMaster University, Hamilton, Ontario, Canada
Mukesh Jain
Mechanical Engineering Department, McMaster University, Hamilton, Ontario, Canada
Jiangting Wang
Institute for Frontier Materials, Deakin University, Geelong, Victoria 3217, Australia
Lukasz Madej
Department of Applied Computer Science and Modeling, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Cracow, Poland

Краткое описание

Dual-phase (DP) steel sheets are subjected to large plastic strains during forming of the body and structures of automotive components. These steels primarily contain hard martensite and soft ferrite phases in their microstructure and involve brittle and ductile fracture mechanisms for the ferrite and martensite phases, respectively. An uncoupled, multiscale finite-element model consisting of continuum (or macro) and microstructural (or micro) scales for large uniaxial tensile plastic deformation and failure of DP steel is developed. This model, based on a digital material representation (DMR) approach, is presented and validated with experimental results. The micromodel incorporates the above phase-specific fracture mechanisms, utilizes experimentally measured DP steel microstructures obtained as scanning electron microscopy (SEM) images, stress–strain (or flow curves) of individual ferrite and martensite phases as inputs, and deformation boundary conditions from two-scale macromodels of the uniaxial tensile test. The response of the micromodel in terms of local fracture behavior of the individual phases at large strains is compared with an experimental in situ SEM uniaxial tensile deformation study of the DP steel microstructure in the literature and good agreement is observed.