MATS 3011 Lecture : Lecture 352014.pdf
Document Summary
Can"t use light to see electrons using visible light. Shoot electrons down column through lenses (like induction coils) Hits screen on bottom (can do diffraction or visualization) Dislocations don"t have to be straitcan be curved lines. Mixture of pure edge and pure screw dislocations. Easier to move the dislocation rather than moving the plane of atoms. Like moving a carpet or a worm moving. A single dislocation might just cause a shear to shift off by 1hard to see. But if have many different planes, see the actual shearnot individual atomic planes. How a material deforms by resolved shear stress onto a glide plane due to applied stress: area of slip plane. Dislocation might not move along plane of shear, but maybe along a diagonal planethe slip planered only the amt force projected on the plane can move the dislocation.
