INVESTIGATION INTO THE EFFECT OF DIRECTIONALITY ON MECHANICAL PROPERTIES OF HIGH STRENGTH STEEL

Abstract

In the present work, the conventional and fracture mechanics properties, mainly, cyclic crack growth rate is assessed in longitudinal, transverse & short-transverse directions in order to find out the effect created by-directionality on the various properties of a high strength steel. The various tests which have been done include hardness, tensile, charpy and fracture mechanic tests. It - has been found that microstructure is same in the longitudinal and the transverse directions and varies in the short transverse .direction. In the case of hardness, leaving the longitudinal direction there was variation in the other two directions. The tensile strength was •highest in the transverse direction whereas the charpy values were lowest in this direction finally crack-growth was lowest in the short transverse direction.