506 高ひずみ速度による微視的残留応力(OS5-2 回折法による材料評価)

Abstract

The specimen material was austenitic stainless steel SUS3 16L. The plastic tensile specimens were prepared using tensile testing machine and split-Hopkinson bar test. The residual micro-stresses of these specimen were measured by many lattice plane using hard synchrotron X-ray. The higher the strain rate, the smaller the difference in the residual micro-stress. In addition, the residual micro-stress on laser-peened and water-jet peened surfaces were examined by hard synchrotron X-ray.