Abstract
The effect of plastic flow localization, which is significant for obtaining ultra-fine-grain metals by intense high-rate plastic straining, is studied numerically. Large-scale localization of plastic flow, which is determined by the geometry of the problem, as well as microscopic localization appearing due to instability of plastic strain during the passage of a shock wave through the material, is detected. This effect is proposed for explaining the formation of nanocrystal-size grains obtained in experiments on dynamic channel-angular pressing.
| Original language | English |
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| Pages (from-to) | 1159-1163 |
| Number of pages | 5 |
| Journal | Technical Physics |
| Volume | 58 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 1 Aug 2013 |