Comparative Study of Dry Sliding Wear Behavior of a Selected Titanium Alloy and Steel

The wear tests under various temperatures and loads were performed for TC11 alloy and H13 steel on a high temperature wear tester,and their wear behaviors were comparatively studied.TC11 alloy and H13 steel represent totally different wear behaviors with the variations of temperature and load.For the titanium alloy,with increase of temperature,the wear rate first increases at 200℃,then decreases substantially and maintains the lowest value at 400~600℃.For H13 steel,with increase of temperature,the wear rate first decreases to the lowest value at 200℃,subsequently markedly increases to present a mild-to-severe wear transition as a function of load at 400~600℃.All the above behaviors are suggested to be attributed to the protective ability of tribo-oxides and the differences of thermal softening resistance of the matrix between TC11 alloy and H13 steel.