Effect of relative grain size on the flow stress of polycrystalline FCC sheets

Autor:	Mei Yang, Houjia Li, Du Jitao, Xiaoyan Zhang
Rok vydání:	2012
Předmět:	Materials science Metallurgy Flow stress Grain size Condensed Matter::Materials Science visual_art visual_art.visual_art_medium Grain boundary diffusion coefficient General Materials Science Grain boundary Crystallite Composite material Sheet metal Tensile testing Grain boundary strengthening
Zdroj:	Journal of Wuhan University of Technology-Mater. Sci. Ed.. 27:477-483
ISSN:	1993-0437 1000-2413
DOI:	10.1007/s11595-012-0488-1
Popis:	A dynamic explicit finite element code and rate-dependent elastic-viscoplastic polycrystalline model were used to simulate the simple tension test of annealing FCC polycrystal and 6111-T4 aluminum alloy sheet metal. The variability of flow stress was investigated, which was induced by various grain boundary constraints when the ratio of thickness-to-grain size was changed. The simulated results show that, when the relative grain size increases, the constraint of grain boundary will increase accordingly, which results in the increase of the flow stress of polycrystal. The results agree with experiments.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bb5d59456363f6a588990538e4756470 https://doi.org/10.1007/s11595-012-0488-1 Zobrazit plný text záznamu Full text from SpringerLink