Abstract
The dynamic yielding of an Fe-0.17 pct Ti alloy at 298° and 77° has been determined in shock compression experiments. The material was used as annealed and also after 52 pct reduction by cold-rolling. Cold-rolling did not change the dynamic yield point which was about 14 kbar at 298~ and 18 kbar at 77°K. Prior cold work did, however, completely suppress twinning, and an associated yield drop believed to be due to twinning. The dynamic yielding data on the cold-rolled material are uncomplicated by deformation twinning. These data can thus be analyzed on the basis of a simple dislocation dynamics model which has been previously applied to other metallic systems.
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