{"_buckets": {"deposit": "e4a2085b-dca0-40f3-8466-4dbf98bb7f9b"}, "_deposit": {"id": "8732", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "8732"}, "status": "published"}, "_oai": {"id": "oai:kitami-it.repo.nii.ac.jp:00008732"}, "item_3_biblio_info_186": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2019-09", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "9", "bibliographicVolumeNumber": "92", "bibliographic_titles": [{}, {"bibliographic_title": "The European Physical Journal B", "bibliographic_titleLang": "en"}]}]}, "item_3_description_184": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "Mechanisms of strain localization and localized activation of slip systems in \u03b1 titanium were investigated using a crystal plasticity finite element (CPFE) method. A microscopic image of polycrystalline \u03b1 titanium was obtained by electron back scatter diffraction (EBSD), and the data was converted from the microscopic image into the geometric model for the CPFE analysis. The uniaxial tensile deformation of the model was numerically reproduced by the CPFE method employing a dislocation density based constitutive equation. The results showed that the strain distribution corresponds well with that obtained by the experiment when the ratio of critical resolved shear stress (CRSS) employed in the numerical simulation is basal:prismatic \u27e8a\u27e9:1st-pyramidal \u27e8a\u27e9:1st-pyramidal \u27e8c + a\u27e9:2nd-pyramidal \u27e8c + a\u27e9 = 1.0:1.0:1.3:2.0:2.0. Next, numerical simulations were performed by changing the ratio of CRSS among the slip systems but keeping all other conditions the same as those of the above uniaxial tensile analysis. The results showed that strain redistribution typically occurs between hard and soft regions with high and low CRSSs for the primary slip systems; this redistribution resulted in a localized higher strain and activation of slip systems. However, localized activation of slip systems was observed even in slip systems with higher CRSS; the mechanism could be explained by the strain redistribution in the tensile direction. 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