Phase-field coupled crystal plasticity modeling of fatigue fracture in pearlitic microstructures

Dynamic fracture modeling in ductile materials using phase field approach

Understanding dynamic fracture in both brittle and ductile materials has attracted considerable attention from engineers and researchers due to its practical importance. In ductile materials, crack initiation and growth are strongly influenced by plastic deformation and the associated microstructural damage, which grad...

Mesoscale modelling of void growth and fracture initiation in steel

Accurate prediction of ductile fracture in steels requires a mechanistic understanding of the evolution of microstructural voids under multiaxial loading. This work presents a mesoscale finite element framework implemented in Abaqus to characterise fracture initiation in structural steel using a representative volume e...

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular, nanostructured bainitic steels), with special emphasis on the role of the microstructure and the specimen geometry. These studies encompass the determination of intrinsic fatigue limits from notched specimens;...

Adaptive anisotropic phase field modeling of dynamic fracture in polycrystalline materials

Influence of Long-Term Annealing on Microstructure and Creep Properties of P92 Steel Welded Joints

The study presents an analysis of the relationship between microstructural evolution and creep properties degradation in welded joints made of P92 (X10CrWMoVNb9-2) steel subjected to long-term annealing. The investigated material consisted of butt-welded pipe joints exposed to thermal ageing at 600°C and 650°C for up t...

Influence of dislocation density on the tribological response in oxides: case study on SrTiO3

Most ceramics suffer from brittle surface damage and cracking when small particles slide across the surface under low load. Microscratching tests are a useful technique to mimic this loading scenario while retaining the material's deformation history; however, the impact of pre-seeded dislocations, which can significan...