کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1577457 | 1514800 | 2012 | 4 صفحه PDF | دانلود رایگان |

The characteristics of plastic deformation of an ultrafine-grained (UFG) Al–30 wt.% Zn alloy were investigated using depth-sensing micro- and nanoindentation. Emphasis was placed on the effects of grain boundaries and the unusually high strain rate sensitivity. It is shown that there is a close relationship between enhanced strain rate sensitivity and ductility in this UFG material and this is associated with grain boundary sliding and enhanced diffusion along the Al/Al grain boundaries which appear to be wetted by Zn-rich layers.
► The characteristics of plastic deformation of an ultrafine-grained (UFG) Al–30 wt.% Zn alloy investigated by depth-sensing micro- and nanoindentation.
► The effects of grain boundaries and the strain rate sensitivity.
► Close relationship between enhanced strain rate sensitivity and ductility.
► Enhanced diffusion along the Al/Al grain boundaries wetted by Zn-rich layers.
Journal: Materials Science and Engineering: A - Volume 543, 1 May 2012, Pages 117–120