Complex sentence: The process influences the surface properties such that the hardness and thereby increasing the wear resistance, improves the fatigue strength, the effect of cavitation at these surfaces, and galling (i.e., cold welding) is reduced or even eliminated.
Split into simpler sentences: The process influences the surface properties such that the hardness is increased and thereby increasing the wear resistance and fatigue strength. The effect of cavitation at these surfaces, and galling (i.e., cold welding) is reduced or even eliminated.