Fretting wear behaviors and mechanism of a high Nb–TiAl alloy with full lamellar microstructure at ambient temperature
Source abstract
Abstract
The fretting wear behaviors and mechanism of a high Nb–TiAl alloy with full lamellar microstructure at ambient temperature were investigated. The fretting wear mechanism of the alloy under different loads and displacement amplitudes was revealed using experiments and molecular dynamics simulations. The results showed that the load and displacement amplitude significantly affected fretting wear behaviors and the mechanism of the Ti–45Al–9Nb alloy. Higher load and lower displacement amplitude could effectively reduce the fretting wear of the alloy. Molecular dynamics simulation results showed that the order-twin lamellar interface hindered the deformation and dislocation movement of twins, improved the mechanical properties of the material, and improved the wear resistance of such alloy. The wear mechanism of Ti–45Al–9Nb alloy was adhesive wear and surface fatigue wear.
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Research context
OpenAlex topics: Mechanical stress and fatigue analysis · Metal and Thin Film Mechanics · Electrical Contact Performance and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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