IMECH-IR  > 力学所知识产出(1956-2008)
Surface instability of microscale multilayer thin film system
Wei YG(魏悦广); Jiang D; Cao AJ; Zhao HF
Source PublicationMaterials Research Society Symposium Proceedings
Conference Name2004 MRS Fall Meeting
Conference DateNovember 29, 2004 - December 3, 2004
Conference PlaceBoston, MA, United states
AbstractFundamental relations of surface instability for micro-scale multilayer thin film systems are derived based on the Hill and Hutchinson bifurcation theory and the volume average integral. In the present relations, a size effect is considered through generalizing the plastic hardening modulus to include the strain gradient hardening effects. By using the model, firstly, the parameter-controlled instability region is divided and analyzed, secondly, the surface instability of the multilayer thin Films are analyzed. In the surface instability analysis, several kinds of failure band formations are obtained, such as the kink bands and the compressive buckling bands in vertical direction and in inclined direction. Moreover, the failure mechanism of the multilayer thin film system due to surface instability is used to interpret the microstructure features of the surface-nanocrystallization materials. © 2005 Materials Research Society.
KeywordGradient Hardening Effects Kink Bands Multilayer Thin Films Surface Instability Volume Average Integral
Indexed ByEI
Document Type会议论文
Recommended Citation
GB/T 7714
Wei YG,Jiang D,Cao AJ,et al. Surface instability of microscale multilayer thin film system[C]Materials Research Society Symposium Proceedings,2004.
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