An off–normal fiber–like texture, also regarded as the fourth texture, that is named axiotaxy. Axiotaxies concern the preferred grain orientations along the axes in crystallographic coordinate system, rather than the axes in sample coordinate system. They reflect the extent of phase boundary matching during, e.g., martensitic transformation or thin film deposited on single crystal substrates as well as the selection of variants. The excellent properties of high manganese TRIP steels with a good combination of strength and elongation attract great interest of automobile industry and
thus the research on this type of steels is increasing. The reason responsible for the super properties of the steels is mainly due to the presence of two types martensites ( α'– and ε–martensite) which can form either thermally during quenching or strain–induced. Therefore, the Axiotaxies related with these two types of martensites are more complicated and may show more information. This paper investigated the axiotaxies revealed by EBSD orientation mapping during the study of orientation relationship and variant selection in martensitic transformation of two high manganese TRIP steels with 18%Mn and 22%Mn together with 3%Si and 2%Al. It is shown that the quasi–fiber textures in these steels can be caused in 4 ways. First, they were caused by the α–martensite variants formed in an ε-martensite plate which were generated from an austenitic {111} plane by K–S relationship. The center of axiotaxy corresponds to the normal of habit plane {111}  and this type of axiotaxy was observed only in the pole figures of α'–martensite. Secondly, they were due to the  ε–martensite transformed from austenitic deformation twins, this indicates an important role of twinning in martensitic transformation. Thirdly, they were caused by reularly mis–indexing of phases due to the strain aroused by martensitic trans-
formation, namely, the real axiotaxy existed in α'–martensite was transferred erroneously into the pole figures of  α'–austenite or ε–martensite. Fourthly, they may also be due to the accommodation of lattice planes for low misfits by means of external deformation. All of axiotaxies detected were related with martensitic transformation and the significance of analyzing axiotaxy lies in that it reveals much information about phase boundary match, vrint selection or the effects of deformation during quenching or during deformation.