Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1639242 | Transactions of Nonferrous Metals Society of China | 2007 | 4 Pages |
Abstract
The nanocrystalline Al-Zn-Mg-Cu alloy powders were synthesized using cryomilling. Deformation twins and twinning at ambient temperature were observed in Al-Zn-Mg-Cu powders. Experimental results indicate that high strain rate at low temperature during cryomilling induces the formation of deformation twins by the climbing of the restricted dislocations in nano-scale grains, and the cryomilled powders at high energies and nonequilibrium state reduce the grain boundary energies by twinning.
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