Twinning in nanocrystalline materials

Autor:	Roman Ya. Kezerashvili, Vladimir S. Boyko
Rok vydání:	2012
Předmět:	Physics Condensed Matter::Materials Science Condensed matter physics Analytical expressions Mathematics::General Mathematics Condensed Matter::Superconductivity General Physics and Astronomy Grain size effect Slip (materials science) Crystal twinning Grain size Nanocrystalline material
Zdroj:	Physics Letters A. 376:1058-1061
ISSN:	0375-9601
DOI:	10.1016/j.physleta.2012.02.010
Popis:	The deformation twinning of nanocrystalline materials is analyzed within the dislocation theory of twins. This approach is used for the description of the recently observed inverse grain size effect in nanocrystalline face-centered-cubic metals. The analytical expressions are obtained for the grain size corresponding to the peak of the twinning propensity, the requisite external stress for twinning propagation in polycrystals and the grain size at which the slip begins to prevail over the twinning. The theoretical results are compared with the experimental data for twinning in Ni and Cu, and given predictions for Al.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48dd315e322d383a5656e22d00609f24 https://doi.org/10.1016/j.physleta.2012.02.010 Zobrazit plný text záznamu Full Text from ScienceDirect