Microtwins and their effect on accumulation of excess dislocation density in grains with different types of crystal lattice bending in deformed austenitic steel

Ivan Gibert, Svetlana Kiseleva, Natalya Popova, Nina Koneva, Eduard Kozlov

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

2 Цитирования (Scopus)

Выдержка

The investigation of excess dislocation density accumulation in the deformed polycrystalline austenitic steel was carried out using transmission electron microscopy (TEM). The distributions of the excess dislocation density in the grains of the deformed austenitic steel with different bending types were obtained and plotted. It was established that in the austenitic polycrystalline steel at the deformation degrees ε = 14 and 25 % the distributions of the excess dislocation density are multimodal. In both cases the grain with compound bending is more stressed. The values of the average excess dislocation density in the grains with the compound and simple bending are less at ε = 25 % than that at ε = 14 %. This is explained by a significant relaxation of the internal stresses in steel with the increase of the deformation degree from 14 % to 25 %. The increase of the number of twinning systems and the material volume fraction covered by twinning leads to the internal stress relaxation and consequently to the increase of the excess dislocation density. The presence of microtwins in the deformed material has an influence on the distribution of the excess dislocation density. In the deformed polycrystalline austenitic steel the number of grains with compound bending is increased with the increase of the plastic deformation degree.

Язык оригиналаАнглийский
Название основной публикацииAdvanced Materials in Technology and Construction, AMTC 2015
Подзаголовок основной публикацииProceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction"
ИздательAmerican Institute of Physics Inc.
Том1698
ISBN (электронное издание)9780735413450
DOI
СостояниеОпубликовано - 15 янв 2016
Событие2nd All-Russian Scientific Conference of Young Scientists on Advanced Materials in Technology and Construction, AMTC 2015 - Tomsk, Российская Федерация
Продолжительность: 6 окт 20159 окт 2015

Конференция

Конференция2nd All-Russian Scientific Conference of Young Scientists on Advanced Materials in Technology and Construction, AMTC 2015
СтранаРоссийская Федерация
ГородTomsk
Период6.10.159.10.15

Отпечаток

crystal lattices
steels
twinning
residual stress
stress relaxation
plastic deformation
transmission electron microscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Цитировать

Gibert, I., Kiseleva, S., Popova, N., Koneva, N., & Kozlov, E. (2016). Microtwins and their effect on accumulation of excess dislocation density in grains with different types of crystal lattice bending in deformed austenitic steel. В Advanced Materials in Technology and Construction, AMTC 2015: Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction" (Том 1698). [020004] American Institute of Physics Inc.. https://doi.org/10.1063/1.4937817

Microtwins and their effect on accumulation of excess dislocation density in grains with different types of crystal lattice bending in deformed austenitic steel. / Gibert, Ivan; Kiseleva, Svetlana; Popova, Natalya; Koneva, Nina; Kozlov, Eduard.

Advanced Materials in Technology and Construction, AMTC 2015: Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction". Том 1698 American Institute of Physics Inc., 2016. 020004.

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Gibert, I, Kiseleva, S, Popova, N, Koneva, N & Kozlov, E 2016, Microtwins and their effect on accumulation of excess dislocation density in grains with different types of crystal lattice bending in deformed austenitic steel. в Advanced Materials in Technology and Construction, AMTC 2015: Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction". том. 1698, 020004, American Institute of Physics Inc., Tomsk, Российская Федерация, 6.10.15. https://doi.org/10.1063/1.4937817
Gibert I, Kiseleva S, Popova N, Koneva N, Kozlov E. Microtwins and their effect on accumulation of excess dislocation density in grains with different types of crystal lattice bending in deformed austenitic steel. В Advanced Materials in Technology and Construction, AMTC 2015: Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction". Том 1698. American Institute of Physics Inc. 2016. 020004 https://doi.org/10.1063/1.4937817
Gibert, Ivan ; Kiseleva, Svetlana ; Popova, Natalya ; Koneva, Nina ; Kozlov, Eduard. / Microtwins and their effect on accumulation of excess dislocation density in grains with different types of crystal lattice bending in deformed austenitic steel. Advanced Materials in Technology and Construction, AMTC 2015: Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction". Том 1698 American Institute of Physics Inc., 2016.
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abstract = "The investigation of excess dislocation density accumulation in the deformed polycrystalline austenitic steel was carried out using transmission electron microscopy (TEM). The distributions of the excess dislocation density in the grains of the deformed austenitic steel with different bending types were obtained and plotted. It was established that in the austenitic polycrystalline steel at the deformation degrees ε = 14 and 25 {\%} the distributions of the excess dislocation density are multimodal. In both cases the grain with compound bending is more stressed. The values of the average excess dislocation density in the grains with the compound and simple bending are less at ε = 25 {\%} than that at ε = 14 {\%}. This is explained by a significant relaxation of the internal stresses in steel with the increase of the deformation degree from 14 {\%} to 25 {\%}. The increase of the number of twinning systems and the material volume fraction covered by twinning leads to the internal stress relaxation and consequently to the increase of the excess dislocation density. The presence of microtwins in the deformed material has an influence on the distribution of the excess dislocation density. In the deformed polycrystalline austenitic steel the number of grains with compound bending is increased with the increase of the plastic deformation degree.",
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AU - Kozlov, Eduard

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N2 - The investigation of excess dislocation density accumulation in the deformed polycrystalline austenitic steel was carried out using transmission electron microscopy (TEM). The distributions of the excess dislocation density in the grains of the deformed austenitic steel with different bending types were obtained and plotted. It was established that in the austenitic polycrystalline steel at the deformation degrees ε = 14 and 25 % the distributions of the excess dislocation density are multimodal. In both cases the grain with compound bending is more stressed. The values of the average excess dislocation density in the grains with the compound and simple bending are less at ε = 25 % than that at ε = 14 %. This is explained by a significant relaxation of the internal stresses in steel with the increase of the deformation degree from 14 % to 25 %. The increase of the number of twinning systems and the material volume fraction covered by twinning leads to the internal stress relaxation and consequently to the increase of the excess dislocation density. The presence of microtwins in the deformed material has an influence on the distribution of the excess dislocation density. In the deformed polycrystalline austenitic steel the number of grains with compound bending is increased with the increase of the plastic deformation degree.

AB - The investigation of excess dislocation density accumulation in the deformed polycrystalline austenitic steel was carried out using transmission electron microscopy (TEM). The distributions of the excess dislocation density in the grains of the deformed austenitic steel with different bending types were obtained and plotted. It was established that in the austenitic polycrystalline steel at the deformation degrees ε = 14 and 25 % the distributions of the excess dislocation density are multimodal. In both cases the grain with compound bending is more stressed. The values of the average excess dislocation density in the grains with the compound and simple bending are less at ε = 25 % than that at ε = 14 %. This is explained by a significant relaxation of the internal stresses in steel with the increase of the deformation degree from 14 % to 25 %. The increase of the number of twinning systems and the material volume fraction covered by twinning leads to the internal stress relaxation and consequently to the increase of the excess dislocation density. The presence of microtwins in the deformed material has an influence on the distribution of the excess dislocation density. In the deformed polycrystalline austenitic steel the number of grains with compound bending is increased with the increase of the plastic deformation degree.

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