کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
831033 | 1470363 | 2012 | 5 صفحه PDF | دانلود رایگان |
Mechanical behavior of AA1100 aluminum alloy processed by multiple compressions in a channel die was modeled on the basis of a generalized three-dimensional dislocation-density-based two-phase composite model. The simulated yield stress values were compared with the experimental data obtained by the multiple compressions in a channel die after several passes. A good agreement was found between the experimental and simulated yield stress values. The results showed that the yield stress of the ultra fine grained materials, produced by multiple compressions in a channel die, can reasonably be simulated using a dislocation-density-based two-phase model. Moreover, the experimentally determined average grain size of the studied material correlates well with that predicted by the model. Therefore, it can be said that the dislocation-based model could be used to predict the average grain size of the multiple compressed materials in a channel die.
► Ultra fine grain materials can be produced by multiple compressions in a channel die.
► Commercially pure aluminum with ultra fine grains produced by this kind of process.
► Yield strength of the studied material estimated well by the dislocation-based model.
► Grain size of the studied material predicted well by the dislocation-based model.
Journal: Materials & Design - Volume 34, February 2012, Pages 230–234