Wear behaviors and wear mechanisms of several alloys under simulated deep-sea environment covering seawater hydrostatic pressure

► Wear behaviors of some alloys in simulated deep-sea environment are investigated. ► Wear rates of the alloys well correlate with the seawater hydrostatic pressure. ► The correlations are in a form of first-order exponential decay. ► Ti6Al4V alloy possesses excellent wear-resistance under deep-sea environment.