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dc.contributor.authorCyr, Edward D.
dc.contributor.authorBrahme, Abhijit
dc.contributor.authorMohammadi, Mohsen
dc.contributor.authorMishra, Raja K.
dc.contributor.authorInal, Kaan 17:56:01 (GMT) 17:56:01 (GMT)
dc.descriptionThe final publication is available at Elsevier via © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
dc.description.abstractTo improve metal formability, high temperature forming has become a desired manufacturing process. Phenomenological plasticity models are widely used in this application, however lack good predictive capability concerning microstructure evolution during forming. Many crystal plasticity hardening models have been developed to predict deformation phenomena of metals during high temperature forming; however, few have thermodynamic self-hardening formulations based on deformation mechanisms. This work presents a crystal plasticity based analysis with a Taylor polycrystal averaging scheme of warm forming employing a new microstructure and dislocation based strain hardening model to simulate deformation behaviour. The hardening model is derived from energy balance between dislocation storage, dislocation accumulation, and dislocation recovery, based on remobilization of immobile dislocations, due to thermal activation. The constitutive formulation is extended to include alloying effects due to solute strengthening of Mg. The material hardening properties of AA5754 are characterized for a range of temperatures at constant strain-rates. A formulation for the kinematics of dynamic strain aging is presented and employed for room-temperature simulations. The hardening characterization is then used to predict stress-strain behaviour of AA5182 for similar conditions. The model shows excellent predictability of experimental results. An analysis on the microstructural connection between temperature and stress-strain response is presented.en
dc.description.sponsorshipCanada (NSERC) [no. APCPJ 441668-12]en
dc.description.sponsorshipGeneral Motors of Canadaen
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.subjectCrystal plasticityen
dc.titleA new crystal plasticity framework to simulate the large strain behaviour of aluminum alloys at warm temperaturesen
dcterms.bibliographicCitationCyr, E. D., Brahme, A., Mohammadi, M., Mishra, R. K., & Inal, K. (2018). A new crystal plasticity framework to simulate the large strain behaviour of aluminum alloys at warm temperatures. Materials Science and Engineering: A, 727, 11–28. doi:10.1016/j.msea.2018.04.020en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen

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