High-resolution reciprocal space mapping reveals dislocation structure evolution during 3D printing

Post-Process Lasering Improves Strength-Ductility Tradeoff and Fatigue Limit of Additively Manufactured Stainless Steels

“…Following solidification, tensile residual stresses are generated along the laser track during cooldown as a consequence of the temperature gradient mechanism [19]. The local stresses can be sufficiently large to trigger dislocation dynamics causing local plastic deformation, as reported in a recent in situ synchrotron X-ray diffraction study [20]; this argument is further supported by the misorientation bands observed in the 50 mm/s track (Fig. 2).…”