ISSN 2687-0568
English

Strengthening and Softening of Nanoceramics: a Brief Review

Авторы
А.Г. Шейнерман 1, 2, 3 , М.Ю. Гуткин 1, 2, 4

1 Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg 199178, Russia

2 Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia

3 Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia

4 ITMO University, St. Petersburg 197101, Russia

10.17586/2687-0568-2019-1-1-46-53
Rev. Adv. Mater. Technol., 2019, vol. 1, no. 1, pp. 46–53
Аннотация

We briefly review the experimental data, the results of computersimulations and analytical models that describe the mechanisms of room-temperature plastic deformation of nanocrystalline ceramics (NCCs) and the effects of these mechanisms on hardness of NCCs. We demonstrate the importance of grain boundary (GB) mediated processes, such as GB sliding, grain rotation and GB amorphization in NCCs. We show that these processes can be responsible for contradictive data on hardness of nanocrystalline MgAl2O4 spinel with small grain sizes, which demonstrate either direct or inverse Hall-Petch dependence for hardness.

Финансирование

Russian Science Foundation: project No. 18-19-00255.

Ссылки
Том 1 № 1 2019
Том 1, № 1
Страницы 46-53
Файлы
История
Поступила в редакцию:  10 Октября 2019
Принята:  10 Марта 2026
Доступна онлайн:  10 Марта 2026
© 2019 ITMO University.
This is an open access article under the terms
of the CC BY-NC 4.0 license.
Metadata is available under the terms of the CC BY 4.0 license