Herein

we explore the effect of dynamic strain aging (DSA) on dislocation evolution using nanoindentation and transmission electron microscopy (TEM). DSA is primarily manifested as serrations on the load-displacement curves at lower strain rates (10

−2

and 10

−3

s

−1

)

whereas these serrations are substantially less at higher strain rate (10

−1

and 10

0

s

−1

). Interestingly

despite variations in strain rates and DSA occurrence

detailed TEM observations beneath the indentations reveal no discernible differences in dislocation density and substructure. The present study indicates that although DSA can increase the gliding resistance of dislocations

it does not affect the evolution of dislocation.