Deformation twinning evolution from a single crystal is conducted by molecular dynamics simulations, to elucidate a twinned face-centered-cubic alloy in an experiment with hardness up to 100 times as that of single crystals, and with ductility simultaneously. Critical twinning stress of cadmium zinc telluride (CdZnTe or CZT) calculated is 1.38 GPa. All the twin boundaries are along the (11-1) o...

A traction-displacement relationship that may be embedded into a cohesive zone model for microscale problems of intergranular fracture is extracted from atomistic molecular-dynamics simulations. A molecular-dynamics model for crack propagation under steady-state conditions is developed to analyze intergranular fracture along a flat Σ99 [1 1 0] symmetric tilt grain boundary in aluminum. Under hy...

Microstructural evolution under tribological load is known to change the friction and wear response of entire system. It however not yet fully understood, how these changes take place on an elementary, mechanistic level. Revealing temporal sequence deformation mechanisms a by experiments scarce. The discrete strain release in case twinning allows identification their sequence. Therefore, medium...

Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature such twins, which are formed due high strain rapid solidification inherent LPBF. Dynamic recrystallization (DRX) also activated LPBF, and induced by deformation nanotwins. A thermostatis...

The influence of the initial crystal orientation and carbon content on rolling-induced texture was investigated using quasi-single crystals 3.2 mass% Si steel. These specimens had {110}<001> {110}<113> orientations, which are common near surface textures for hot-rolled steel band. In case ultralow-carbon specimens, rotated to {111}<112> after 66% reduction cold rolling {211}<124>. It is conside...