THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUM
Lattice parameters and residual stresses in the bulk nanocrystalline/ultrafine-grained titanium were studied by X-ray diffraction methods. The investigated samples were prepared using the method of the cryomechanical grain structure fragmentation with multiple rolling at the temperature of liquid ni...
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| Format: | Article |
| Language: | English |
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V.N. Karazin Kharkiv National University Publishing
2017-05-01
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| Series: | East European Journal of Physics |
| Subjects: | |
| Online Access: | http://periodicals.karazin.ua/eejp/article/view/8559 |
| _version_ | 1818614810246381568 |
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| author | Yu. M. Plotnikova R. V. Smolianets I. S. Braude V. A. Moskalenko |
| author_facet | Yu. M. Plotnikova R. V. Smolianets I. S. Braude V. A. Moskalenko |
| author_sort | Yu. M. Plotnikova |
| collection | DOAJ |
| description | Lattice parameters and residual stresses in the bulk nanocrystalline/ultrafine-grained titanium were studied by X-ray diffraction methods. The investigated samples were prepared using the method of the cryomechanical grain structure fragmentation with multiple rolling at the temperature of liquid nitrogen to the true strain value |e| = 3. Phasic change of the a and c parameters has been found with increasing degree of cryoreduction. This change was stronger for the parameter a. The observed change parameters associated with a relative slip and twinning activity (initial cryo-reduction stage) as well as the formation of the nanocrystalline state (at higher degree of deformation). The most likely source of residual stresses arising in titanium at cryorolling is heterogeneous plastic deformation. The production of nanocrystalline / ultrafine-grained titanium using cryomechanical grain fragmentation method is accompanied by the formation of uniform compressive residual stresses in the informative deformable layer of billet. |
| first_indexed | 2024-12-16T16:23:55Z |
| format | Article |
| id | doaj.art-1f3eb3f6519e429590f80e8a55f0cd68 |
| institution | Directory Open Access Journal |
| issn | 2312-4334 2312-4539 |
| language | English |
| last_indexed | 2024-12-16T16:23:55Z |
| publishDate | 2017-05-01 |
| publisher | V.N. Karazin Kharkiv National University Publishing |
| record_format | Article |
| series | East European Journal of Physics |
| spelling | doaj.art-1f3eb3f6519e429590f80e8a55f0cd682022-12-21T22:24:50ZengV.N. Karazin Kharkiv National University PublishingEast European Journal of Physics2312-43342312-45392017-05-014156618401THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUMYu. M. Plotnikova0R. V. Smolianets1I. S. Braude2V. A. MoskalenkoB. Verkin Institute for Low Temperature Physics and Engineering of NAS of Ukraine 47 Nauky Ave., Kharkiv, 61103, UkraineB. Verkin Institute for Low Temperature Physics and Engineering of NAS of Ukraine 47 Nauky Ave., Kharkiv, 61103, UkraineB. Verkin Institute for Low Temperature Physics and Engineering of NAS of Ukraine 47 Nauky Ave., Kharkiv, 61103, UkraineLattice parameters and residual stresses in the bulk nanocrystalline/ultrafine-grained titanium were studied by X-ray diffraction methods. The investigated samples were prepared using the method of the cryomechanical grain structure fragmentation with multiple rolling at the temperature of liquid nitrogen to the true strain value |e| = 3. Phasic change of the a and c parameters has been found with increasing degree of cryoreduction. This change was stronger for the parameter a. The observed change parameters associated with a relative slip and twinning activity (initial cryo-reduction stage) as well as the formation of the nanocrystalline state (at higher degree of deformation). The most likely source of residual stresses arising in titanium at cryorolling is heterogeneous plastic deformation. The production of nanocrystalline / ultrafine-grained titanium using cryomechanical grain fragmentation method is accompanied by the formation of uniform compressive residual stresses in the informative deformable layer of billet.http://periodicals.karazin.ua/eejp/article/view/8559lattice parametersresidual stressesbulk nanocrystalline/ultrafine-grained titaniumX-ray diffractioncryoreduction |
| spellingShingle | Yu. M. Plotnikova R. V. Smolianets I. S. Braude V. A. Moskalenko THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUM East European Journal of Physics lattice parameters residual stresses bulk nanocrystalline/ultrafine-grained titanium X-ray diffraction cryoreduction |
| title | THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUM |
| title_full | THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUM |
| title_fullStr | THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUM |
| title_full_unstemmed | THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUM |
| title_short | THE LATTICE PARAMETERS AND RESIDUAL STRESSES IN BULK NANOCRYSTALLINE AND ULTRAFINE-GRAINED TITANIUM |
| title_sort | lattice parameters and residual stresses in bulk nanocrystalline and ultrafine grained titanium |
| topic | lattice parameters residual stresses bulk nanocrystalline/ultrafine-grained titanium X-ray diffraction cryoreduction |
| url | http://periodicals.karazin.ua/eejp/article/view/8559 |
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