v Solidification law and microstructure control: equiaxed grain rate, segregation, and liquation carbide

v Evolution law and control of rolling, forging and service microstructure

v Strengthening mechanism: solid solution, fine grain, dislocation and precipitation

v Plasticization mechanism: TRIP effect, TWIP effect, movable dislocation plasticization

v Toughening mechanism: fine grain, microstructure control, refining purification