Abstract
In a pearlitic steel, phase and intergranular stresses are yielded due to inhomogeneous plastic flow between ferrite and cementite and among differently oriented ferrite blocks, respectively. Neutron diffraction enables us to determine the phase stress and the block stress averaged within a whole specimen. The in situ neutron diffraction during tensile testing for variously heat-treated pearlitic steels has revealed the following features: [200] family grains in ferrite and [122] family grains in cementite are the hardest, leading to generation of block stress in pearlitic steel.
