The present study investigates the crystallographic-texture effects on the improved fatigue resistance in the
CoCrFeMnNi high-entropy alloys (HEAs) with the full-size geometry of the American Society for Testing and
Materials (ASTM) Standards E647-99. We exploited X-ray nano-diffraction (XND) mapping to characterize the
crystal-deformation levels ahead of the crack tip after stress unloading under both constant- and tensileoverloaded-fatigue conditions. The crack-tip blunting-induced much higher deformation level was concentrated surrounding the crack-tip which delays the fatigue-crack growth immediately after a tensile overload. The
predominant deformation texture orientation in the Paris regime was investigated, using electron backscatter
diffraction (EBSD) and orientation distribution function (ODF) analyses. The twinning formation-driven shear
deformation gave rise to the development of the Goss-type texture within the plastic deformation regime under a
tensile-overloaded-fatigue condition, which was attributed to enhance the crack deflection and thus the tensileinduced crack-growth-retardation period in the CoCrFeMnNi HEA. Our new findings address the quantitative
discrepancy found in our earlier work.