Dependence of fretting wear resistance on the α morphology and stress-induced martensite transformation in a metastable β titanium alloy

Systematic experimental investigations concerning the influence of alpha morphology on the fretting wear behaviors Systematic experimental investigations concerning the influence of alpha morphology on the fretting wear behaviors of metastable ( titanium alloys are carried out. A Ti-10V-2Fe-3Al titanium alloy was subjected to different heat of metastable ( titanium alloys are carried out. A Ti-10V-2Fe-3Al titanium alloy was subjected to different heat treatment routes to create dual phase microstructures consisted of ( phase plus alpha phase with three different treatment routes to create dual phase microstructures consisted of ( phase plus alpha phase with three different morphologies. The effect of alpha morphology on the fretting wear resistance, the resulting failure mechanisms, and morphologies. The effect of alpha morphology on the fretting wear resistance, the resulting failure mechanisms, and stress induced martensite transformation (SIMT) were unraveled. Results show that the alpha morphology has a stress induced martensite transformation (SIMT) were unraveled. Results show that the alpha morphology has a significant influence on fretting wear behaviors depending on the fretting run regimes. In the partial slip regime significant influence on fretting wear behaviors depending on the fretting run regimes. In the partial slip regime (PSR) and mixed fretting regime (MFR), the microstructure with lath alpha morphology has a lowest fretting wear (PSR) and mixed fretting regime (MFR), the microstructure with lath alpha morphology has a lowest fretting wear volume accompanied by relatively strong SIMT effect. While in gloss slip regime (GSR), the globular alpha microvolume accompanied by relatively strong SIMT effect. While in gloss slip regime (GSR), the globular alpha microstructure has a lowest fretting wear volume along with strongest SIMT response, yet a highest fretting wear structure has a lowest fretting wear volume along with strongest SIMT response, yet a highest fretting wear volume for the acicular alpha morphology microstructure due to its brittleness nature. The subsurface observations volume for the acicular alpha morphology microstructure due to its brittleness nature. The subsurface observations demonstrates that a compacted and thick plastic deformation layer, especially for the mechanical mixture layer, demonstrates that a compacted and thick plastic deformation layer, especially for the mechanical mixture layer, can well protect the material surface against the fretting wear damage. can well protect the material surface against the fretting wear damage.