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Mechanisms of remarkable wear reduction and evolutions of subsurface microstructure and nano-mechanical properties during dry sliding of nano-grained Ti6Al4V alloy: A comparative study

Journal Article


Abstract


  • A comprehensive investigation into dry sliding wear and associated evolutions of subsurface microstructure and nano-mechanical properties of a bulk nano-grained Ti6Al4V alloy (NG-Ti6Al4V) was conducted. Comparing with its coarse-grained counterpart (CG-Ti6Al4V), NG-Ti6Al4V always exhibited lower friction coefficient and greater wear resistance in a wide range of tribological conditions. It was also found that the sliding wear induced nano-mechanical properties and microstructure evolutions in Ti6Al4V alloy were largely dependent on its initial microstructural features. For the first time, TEM observations provided a direct experimental evidence that the originally saturated nanostructure in NG-Ti6Al4V could be further refined by sliding wear. This study proposed an effective strategy to improve the load-bearing ability of Ti6Al4V alloy by producing bulk homogeneous nanostructure.

Publication Date


  • 2022

Citation


  • Deng, G., Chong, Y., Su, L., Zhan, L., Wei, P., Zhao, X., . . . Tsuji, N. (2022). Mechanisms of remarkable wear reduction and evolutions of subsurface microstructure and nano-mechanical properties during dry sliding of nano-grained Ti6Al4V alloy: A comparative study. Tribology International, 169. doi:10.1016/j.triboint.2022.107464

Scopus Eid


  • 2-s2.0-85123802093

Volume


  • 169

Abstract


  • A comprehensive investigation into dry sliding wear and associated evolutions of subsurface microstructure and nano-mechanical properties of a bulk nano-grained Ti6Al4V alloy (NG-Ti6Al4V) was conducted. Comparing with its coarse-grained counterpart (CG-Ti6Al4V), NG-Ti6Al4V always exhibited lower friction coefficient and greater wear resistance in a wide range of tribological conditions. It was also found that the sliding wear induced nano-mechanical properties and microstructure evolutions in Ti6Al4V alloy were largely dependent on its initial microstructural features. For the first time, TEM observations provided a direct experimental evidence that the originally saturated nanostructure in NG-Ti6Al4V could be further refined by sliding wear. This study proposed an effective strategy to improve the load-bearing ability of Ti6Al4V alloy by producing bulk homogeneous nanostructure.

Publication Date


  • 2022

Citation


  • Deng, G., Chong, Y., Su, L., Zhan, L., Wei, P., Zhao, X., . . . Tsuji, N. (2022). Mechanisms of remarkable wear reduction and evolutions of subsurface microstructure and nano-mechanical properties during dry sliding of nano-grained Ti6Al4V alloy: A comparative study. Tribology International, 169. doi:10.1016/j.triboint.2022.107464

Scopus Eid


  • 2-s2.0-85123802093

Volume


  • 169