prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever tests
These data were generated in a study aimed at measuring the critical resolved shear strength (CRSS) of individual slip systems of a polycrystalline commercially pure zirconium sample. Slip strengths of <a> basal, <a> prism, and <c+a> pyramidal systems in com...
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| Format: | Dataset |
| Language: | English |
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University of Oxford
2015
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| _version_ | 1797063755377410048 |
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| author | Wilkinson, A |
| author2 | Wilkinson, A |
| author_facet | Wilkinson, A Wilkinson, A |
| author_sort | Wilkinson, A |
| collection | OXFORD |
| description | These data were generated in a study aimed at measuring the critical resolved shear strength (CRSS) of individual slip systems of a polycrystalline commercially pure zirconium sample. Slip strengths of <a> basal, <a> prism, and <c+a> pyramidal systems in commercially pure zirconium have been determined using micro-cantilever testing. A range of single crystal cantilevers 0.5 µm to 10 µm wide, oriented for single slip were prepared using focused ion beam (FIB) machining and subsequently deflected using a nanoindenter. The critical resolved shear stress (τcrss) was found by fitting a crystal plasticity finite element model to the experimental load-displacement data for these micro-bending tests. All the three slip systems in alpha-Zr show a marked size effect in bending described well by CRSS(W)=Tau0 + AWn, where W is the cantilever width, Tau0 is the CRSS at the macro scale and n=-1. The exponent, n, of near -1 is in good accord with hardening caused by the back stress generated by dislocations piling up at a diffuse barrier caused by the reduction of stress near the neutral axis. The macro scale CRSS values were used to successfully simulate deformation of a conventional macroscopic compression test. |
| first_indexed | 2024-03-06T21:04:27Z |
| format | Dataset |
| id | oxford-uuid:3bf98bc2-ddaf-45a3-9a6c-22e70e6f6ab2 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:04:27Z |
| publishDate | 2015 |
| publisher | University of Oxford |
| record_format | dspace |
| spelling | oxford-uuid:3bf98bc2-ddaf-45a3-9a6c-22e70e6f6ab22022-03-26T14:10:49Z prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever testsDatasethttp://purl.org/coar/resource_type/c_ddb1uuid:3bf98bc2-ddaf-45a3-9a6c-22e70e6f6ab2Materials scienceMetallurgyNuclear reactors--MaterialsEnglishORA DepositUniversity of Oxford2015Wilkinson, AWilkinson, AThese data were generated in a study aimed at measuring the critical resolved shear strength (CRSS) of individual slip systems of a polycrystalline commercially pure zirconium sample. Slip strengths of <a> basal, <a> prism, and <c+a> pyramidal systems in commercially pure zirconium have been determined using micro-cantilever testing. A range of single crystal cantilevers 0.5 µm to 10 µm wide, oriented for single slip were prepared using focused ion beam (FIB) machining and subsequently deflected using a nanoindenter. The critical resolved shear stress (τcrss) was found by fitting a crystal plasticity finite element model to the experimental load-displacement data for these micro-bending tests. All the three slip systems in alpha-Zr show a marked size effect in bending described well by CRSS(W)=Tau0 + AWn, where W is the cantilever width, Tau0 is the CRSS at the macro scale and n=-1. The exponent, n, of near -1 is in good accord with hardening caused by the back stress generated by dislocations piling up at a diffuse barrier caused by the reduction of stress near the neutral axis. The macro scale CRSS values were used to successfully simulate deformation of a conventional macroscopic compression test. |
| spellingShingle | Materials science Metallurgy Nuclear reactors--Materials Wilkinson, A prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever tests |
| title | prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever tests |
| title_full | prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever tests |
| title_fullStr | prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever tests |
| title_full_unstemmed | prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever tests |
| title_short | prismatic, basal, and slip strengths of commercially pure Zr by micro-cantilever tests |
| title_sort | prismatic basal and slip strengths of commercially pure zr by micro cantilever tests |
| topic | Materials science Metallurgy Nuclear reactors--Materials |
| work_keys_str_mv | AT wilkinsona prismaticbasalandslipstrengthsofcommerciallypurezrbymicrocantilevertests |