The dislocation density of a specific steel is 10^12/cm^2. One C atom per atomic sites along a dislocation line is required to :lock: a dislocation. What is the minimum carbon concentration (in atome percent) that will cause the alloy to impde the motion of all dislocations? Assume that all dislocations are of {110}<111> nature. i.e Use <110> as the dislocation line in your calculation. The radius of Fe atom is 0.124 nm and Fe has a BCC structure.