Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium
Exact shape of Peierls barriers are calculated for ⟨ a⟩ edge and screw dislocation gliding on basal and prismatic planes in magnesium by using of several popular interatomic potentials. Comparison of these potentials is performed in order to describe their abilities and limitations. Stability of dif...
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| Published in: | Физика низких температур |
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| Date: | 2017 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2017
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/129418 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium / A. Ostapovets, O. Vatazhuk // Физика низких температур. — 2017. — Т. 43, № 3. — С. 520-528. — Бібліогр.: 40 назв. — англ. |
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Ostapovets, A. Vatazhuk, O. 2018-01-19T16:08:15Z 2018-01-19T16:08:15Z 2017 Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium / A. Ostapovets, O. Vatazhuk // Физика низких температур. — 2017. — Т. 43, № 3. — С. 520-528. — Бібліогр.: 40 назв. — англ. 0132-6414 PACS: 61.72.Lk, 62.20.fq, 82.20.Wt https://nasplib.isofts.kiev.ua/handle/123456789/129418 Exact shape of Peierls barriers are calculated for ⟨ a⟩ edge and screw dislocation gliding on basal and prismatic planes in magnesium by using of several popular interatomic potentials. Comparison of these potentials is performed in order to describe their abilities and limitations. Stability of different types of dislocation cores are analyzed as well as their mutual transformations during dislocation slip. It was found that the Peierls stresses and barrier height are dependent on core type. It was concluded that transformations of dislocation cores along minimal energy paths have to be taken into account for development of analytical models of the slip in magnesium. The results are compared with available first-principles calculations. Authors acknowledge financial support from Czech Science Foundation (project 16-14599S) and Ministry of Education, Youth and Sports of the Czech Republic under the project CEITEC 2020 (LQ1601). Besides authors gratefully acknowledge Dr. Roman Gröger for discussion and provision his NEB code. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Низкотемпературная физика пластичности и прочности Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium |
| spellingShingle |
Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium Ostapovets, A. Vatazhuk, O. Низкотемпературная физика пластичности и прочности |
| title_short |
Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium |
| title_full |
Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium |
| title_fullStr |
Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium |
| title_full_unstemmed |
Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium |
| title_sort |
peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium |
| author |
Ostapovets, A. Vatazhuk, O. |
| author_facet |
Ostapovets, A. Vatazhuk, O. |
| topic |
Низкотемпературная физика пластичности и прочности |
| topic_facet |
Низкотемпературная физика пластичности и прочности |
| publishDate |
2017 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
Exact shape of Peierls barriers are calculated for ⟨ a⟩ edge and screw dislocation gliding on basal and prismatic planes in magnesium by using of several popular interatomic potentials. Comparison of these potentials is performed in order to describe their abilities and limitations. Stability of different types of dislocation cores are analyzed as well as their mutual transformations during dislocation slip. It was found that the Peierls stresses and barrier height are dependent on core type. It was concluded that transformations of dislocation cores along minimal energy paths have to be taken into account for development of analytical models of the slip in magnesium. The results are compared with available first-principles calculations.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/129418 |
| citation_txt |
Peierls barriers of a-type edge and screw dislocations moving on basal and prismatic planes in magnesium / A. Ostapovets, O. Vatazhuk // Физика низких температур. — 2017. — Т. 43, № 3. — С. 520-528. — Бібліогр.: 40 назв. — англ. |
| work_keys_str_mv |
AT ostapovetsa peierlsbarriersofatypeedgeandscrewdislocationsmovingonbasalandprismaticplanesinmagnesium AT vatazhuko peierlsbarriersofatypeedgeandscrewdislocationsmovingonbasalandprismaticplanesinmagnesium |
| first_indexed |
2025-11-27T11:31:00Z |
| last_indexed |
2025-11-27T11:31:00Z |
| _version_ |
1850852280157339648 |