The defect evolution in 1-D shocked tantalum single crystals
Research output: Contribution to journal › Article › peer-review
Colleges, School and Institutes
Tantalum single crystals were impacted along ,  and  using 1-D planar shock waves with pressures of 6.4 GPa, 15.4 GPa and 21.7 GPa. The defect structures generated have been characterised using scanning electron microscopy and transmission electron microscopy. Deformation twins were produced in the 15.4 GPa and 21.7 GPa shocked samples, but are not seen in the 6.4 GPa samples. The twinning types were found to be highly dependent on the orientation of the single crystals and to obey the Smith  model. The remaining shock-induced dislocation structure is largely random, presumably as a result of the release wave. The TEM observations also show evidence of surface relaxation.
|Number of pages||13|
|Journal||Journal of Materials Science|
|Publication status||Published - Apr 2021|