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Modelling the influence of the grain size distribution on the properties of nanometals

Romuald Dobosz ,  Krzysztof J. Kurzydlowski 

Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland


The influence of the average grain size on the mechanical properties of metals is usually described by the Hall-Patch relationship (H-P), which has been experimentally proved for a wide range of grain sizes. It has been postulated in the past, that the flow stress of polycrystalline metals depends also on the diversity of the grain size. This effect is of particular importance when the grain size is reduced to the nanometric level. In the present study finite element model has been developed which explains the effect of the grain size diversity in quantitative way. The results of computations are compared with the experimental data for nano-aluminium.


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Presentation: Poster at E-MRS Fall Meeting 2009, Symposium H, by Romuald Dobosz
See On-line Journal of E-MRS Fall Meeting 2009

Submitted: 2009-05-18 17:33
Revised:   2009-06-07 00:48