It really depends on your research area. International Journal of fatigue is a general journal. Perhaps you could find another journal with even higher impact factor of the specific area of your research.
@Katja Klinar International Journal of Fatigue is a specialized journal that deals with long range of fatigue testing and concepts. Multi-axial fatigue, isothermal fatigue, thermo-mechanical fatigue and thermal fatigue are considered in this journal. So, IJ Fatigue can be a nice choice! @Nirajkumar Mehta