An examination of the formation of adiabatic shear bands in AISI 4340 steel through analysis of grains and grain deformation

Results from an experimental investigation showed that the formation of adiabatic shear bands (ASBs) in heat treated AISI 4340 steel is a microstructural phenomenon which depends highly on the grain size, shape, and orientation in the microstructure prior to deformation. Prior heat treatment (at various austenizing and tempering temperatures), as well as testing parameters, such as initial temperature and deformation strain rate, were shown to …