. Use the Peach–Kohler equations to show that a dislocation loop formed from a Frank–Reed source under an applied shear stress will continue to grow. . Consider dislocation movement and interaction in...

. Use the Peach–Kohler equations to show that a dislocation loop formed from a Frank–Reed source under an applied shear stress will continue to grow.

. Consider dislocation movement and interaction in Cu with b=0.2 nm, m=124GPa, and n=0.33. If the slope of a curve sy versus d1/2 is 4.7_105MPa m_1/2, estimate tth for dislocation nucleation in the neighboring grain. Assume the most favorable angle between the dislocation plane and the stress axis.