کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1450700 | 988743 | 2005 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: On the evolution of surface roughness during deformation of polycrystalline aluminum alloys On the evolution of surface roughness during deformation of polycrystalline aluminum alloys](/preview/png/1450700.png)
Surface roughening of polycrystalline Al–Mg alloys during tensile deformation is investigated using white light confocal microscopy. Materials are tested that differ only in grain size. A height–height correlation technique is used to analyze the data. The surface obeys self-affine scaling on length scales up to a correlation length which approximately equals the grain size and above which no height correlation is present. The self-affine scaling exponent increases initially with strain and saturates at a value around 0.9. A linear relation is observed between root-mean-square roughness and both strain and grain size. The observed roughness is explained as the result of the combined effect of a self-affine roughening on a subgrain scale and a grain scale roughening caused by orientation differences between neighboring grains.
Journal: Acta Materialia - Volume 53, Issue 15, September 2005, Pages 4043–4050