Dynamic recrystallization's role in strength-ductility trade-off in polycrystalline Fe–Cr–Ni stainless steels produced by laser powder bed fusion

The deformation mechanisms and reasons for excellent ductility in additively manufactured Fe–Cr–Ni stainless steels by laser powder bed fusion (L-PBF) were disclosed by an interrupted tensile test at room temperature, electron backscattered diffraction, and transmission electron microscopy. The results showed dislocation (DL) slip starts at low strain values, resulting in a rearrangement of DLs and reorientation of low angle grain boundaries...