Residual stress measurement of carburized steel using neutron diffraction method

Suzuki, Kenji*; Shimogishi, Takayuki*; Suzuki, Hiroshi; Saito, Toru; Shobu, Takahisa

no journal, , 

In this study, the residual stress distribution in the carburized cylinder was measured using neutron diffraction. Predictable method of the lattice constant in stress-free condition was developed by consideration of residual stresses in the coupon specimens cut from the carburized cylinder using spark cutter. The residual stresses in the carburized cylinder evaluated using the lattice constants predicted by this method were compression in the hoop and axial directions, and the small compression was observed in the radial direction. Furthermore, the transition from compression to tension was observed near the boundary between carburized layer and the substrate, whereas very high tension like the residual stress in induction hardened sample was not confirmed.