  This investigation demonstrates a way to innovatively modify the ferritic
microstructure at a local scale, particularly at the failure prone area such as
Charpy V-notch (CVN) root. Tensile pre-strain (PS) up to 6 percent and 12
percent were employed before annealing (An) the samples at 650{\deg}C for 15
minutes. Ferrite grain size increased sharply and gradually (along the distance
ahead of the notch root) within the microstructurally modified region in 6-12
percent pre-strained and annealed samples, respectively. Critical strain which
promotes strain induced boundary migration (SIBM), was found to be 0.1 which
resulted in abnormally coarse ferrite grains.
