Dry sliding wear behavior of superelastic Ti-10V-2Fe-3Al beta-titanium alloy

作者：Mehdi M; Farokhzadeh K; Edrisy A^*

来源：Wear, 2016, 350-351: 10-20.

DOI：10.1016/j.wear.2015.12.006

• Superelasticity in titanium alloys
• Wear mechanisms
• Recovery ratio
• Transition load
• Adhesion

The dry sliding wear behavior and wear mechanisms of near -beta Ti-10V-2Fe-3Al alloy were investigated with respect to its superelastic characteristics. The beta-annealed Ti-10V-2Fe-3Al alloy exhibited high recoverable elastic deformation, e.g., maximum recovery ratio of 90% at 200 mN load during indentation tests using a diamond Rockwell stylus (200 mu m radius). Wear tests were carried out under unlubricated conditions using a ball -on -disk tribometer under unidirectional sliding (single pass) and rotational conditions within a load range of 1-5 N against AISI 52100 steel counterface. The dominant wear mechanism, at low loads (<= 2 N), was oxidative wear and superelasticity enhanced the wear resistance mainly due to the high strain recovery of the alloy. A transition to severe wear occurred at higher loads ( > 2 N) characterized by higher wear rates, adhesion, and transfer of titanium alloy to the counterface. After the transition, superelasticity did not contribute to wear enhancement.

• 出版日期2016-3-15