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Deformation Response and Formability Limit Diagram Estimates of Dual-Phase Steels

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dc.contributor.advisor Simha, Hari
dc.contributor.author Espinosa, Esteban
dc.date.accessioned 2021-04-28T18:25:44Z
dc.date.available 2021-04-28T18:25:44Z
dc.date.copyright 2021-04-28
dc.date.created 2021-04-15
dc.identifier.uri https://hdl.handle.net/10214/25657
dc.description.abstract New Dual-Phase (DP) steel sheet with desirable mechanical properties are developed using trialand-error methods that are time-consuming and expensive. Using only micro-structural information, methods to predict stress-strain under tension, reverse yield under compression following tensile loading, and a lower-bound formability limit diagram (FLD) are developed. Mean-field models were used to obtain the flow behavior of the composite under uni-axial loading and reverse yielding, and also serve as descriptors of stress-strain behavior of the ferrite and martensite phases in the finite element models. Representative Volume Elements (RVEs) of the steel were used for the creation of a morphologically realistic Finite Element Model, which in turn allows prediction of flow behavior under uni-axial and plane strain loading. The latter allows estimation of the FLD using the Marciniak-Kuczynski (M-K) and Modified Maximum Force Criterion (MMFC) approaches. Computations with the RVE models afford insights into the relationship between the microstructure and mechanical properties. en_US
dc.language.iso en en_US
dc.publisher University of Guelph en_US
dc.rights Attribution-NoDerivatives 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nd/4.0/ *
dc.subject deformation response en_US
dc.subject formability limit diagram estimates en_US
dc.subject dual-phase steels en_US
dc.title Deformation Response and Formability Limit Diagram Estimates of Dual-Phase Steels en_US
dc.type Thesis en_US
dc.degree.programme Engineering en_US
dc.degree.name Master of Science en_US
dc.degree.department School of Engineering en_US
dc.degree.grantor University of Guelph en_US


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