Measurement of Distributions of Local Internal Stress Near Grain Boundary in SUS316 by EXDM Using White X-ray Micro Beam

The distributions of the local internal stress near the grain boundaries in 20 % cold-rolled SUS316 stainless steel were measured under the external tensile stress of 0 and 300 MPa using the Energy-dispersive X-ray Diffraction Microscopy (EXDM) technique at BL28B2 of SPring-8. The local internal stresses near the grain boundaries were successfully evaluated. The results indicated that the evidence that the internal stress concentration was occurred at the grain boundaries under the external tensile stress.