Grain-Scale Investigations of Deformation Heterogeneities in Aluminum Alloys

Date

2018-04-25

Author

GÜLER, BARAN
Simsek, Ulke
Yalçınkaya, Tuncay
EFE, MERT

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The an isotropic deformation of Aluminum alloys at micron scale exhibits localized deformation, which has negative implications on the macroscale mechanical and forming behavior. The scope of this work is twofold. Firstly, micro-scale deformation heterogeneities affecting forming behavior of aluminum alloys is investigated through experimental microstructure analysis at large strains and various strain paths. The effects of initial texture, local grain misorientation, and strain paths on the strain localizations are established. In addition to uniaxial tension condition, deformation heterogeneities are also investigated under equibiaxial tension condition to determine the strain path effects on the localization behavior. Secondly, the morphology and the crystallographic data obtained from the experiments is transferred to Abaqus software, in order to predict both macroscopic response and the microstructure evolution though crystal plasticity finite element simulations. The model parameters are identified through the comparison with experiments and the capability of the model to capture real material response is discussed as well.

Subject Keywords

Surface-roughness, Strain localization, Microstructure, Evolution

URI

https://hdl.handle.net/11511/38602

DOI

https://doi.org/10.1063/1.5035062

Collections

Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

B. GÜLER, U. Simsek, T. Yalçınkaya, and M. EFE, “Grain-Scale Investigations of Deformation Heterogeneities in Aluminum Alloys,” 2018, vol. 1960, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38602.