Kovové materiály. - : Ústav fyziky materiálu AV ČR, v. v. i. - : Ústav materiálov a mechaniky strojov SAV. - : Ústav materiálového výskumu SAV. - : Strojnícka fakulta STU
- ISSN 0023-432X
Roč. 49, č. 5 (2011), s. 307-318
Number of pages
12 s.
Language
eng - English
Country
SK - Slovakia
Keywords
mechanical properties ; high temperature deformation ; creep ; aluminium
Subject RIV
BM - Solid Matter Physics ; Magnetism
R&D Projects
IAA2041203 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ
AV0Z20410507 - UFM-A (2005-2011)
UT WOS
000298834900001
Annotation
Creep behaviour of pure aluminium was investigated using constant structure creep experiments performed in the steady-state creep stage over a wide temperature interval from 523 to 773 K. The simultaneous activity of two parallel operating dislocation mechanisms was deduced from an analysis of the experiments. Both mechanisms are probably governed by diffusion along dislocation cores; however, they differ substantially in their activation areas. The contributions of the mechanisms to the steady-state creep rate depend on the applied stress and temperature. The nature of both mechanisms is extensively discussed.
