The invention discloses a
crystal orientation detection method and a related device, and relates to the technical field of
crystal detection. The method comprises the following steps: irradiating a to-be-detected area of a to-be-detected sample by using rays generated by a
synchrotron radiation light source; controlling the to-be-detected sample to rotate at a preset interval, and determining a
diffraction vector of the diffracted light corresponding to each rotation angle in the sample coordinate
system based on the
transmitted light spot position and the diffracted
light spot position respectively corresponding to the projection light and the diffracted light of the to-be-detected area to the
ray at each rotation angle collected by the
detector; and according to a preset
crystal face index corresponding to the at least one rotation angle and the
diffraction vector, determining an expression representing a conversion relationship between the sample coordinate
system and the crystal coordinate
system, and taking the expression as the
crystal orientation of the to-be-detected sample. By rotating the sample to be detected, the crystal
face detection blind area is reduced, and the crystal face indexes and the
diffraction vectors of the multiple crystal faces are combined to jointly determine the conversion relation between the sample coordinate system and the crystal coordinate system, so that the accuracy of
crystal orientation is improved.