The Atomic Scale Study of Dislocation‐Mediated Creep Mechanisms of Titanium Alloys at Room Temperature

ABSTRACT Titanium alloys have been recognized as essential materials in marine engineering for their high specific strength and excellent corrosion resistance. Dislocation activities at the microscopic scale can lead to creep failure of the structure. It is of critical importance to understand the creep mechanisms of titanium alloys. This study analyzes the creep mechanisms of titanium alloys at room temperature through molecular dynamics simulations, focusing on the influence of grain‐boundary interactions and grain misorientation angles on creep behaviors. The molecular dynamics results show that grain‐boundary sliding and dislocation gliding within the crystal structure are the two key factors contributing to creep failure. Grains with larger misorientation angles exhibit more stable boundaries and greater resistance to creep, whereas smaller misorientation angles promote boundary slip and result in enhanced creep deformation. This work provides theoretical support and guidance for developing industrial titanium alloys with enhanced creep resistance.