Grain growth and hardness variation occurring in high-temperature heat affected zone (HAZ) during the welding processes are two thermal dependant aspects of great interest for both academic industrial research activities. This paper presents an innovative finite element (FE) model capable to describe grain decrease that occur gas metal arc (GMAW) commercial AISI 441 steel. The FE software SFTC ...

This work investigates the microstructure-property linkages in magnesium (Mg) with an emphasis on understanding interaction effects between grain size, texture, and loading orientation. A single crystal plasticity framework endowed experimentally informed micro Hall-Petch type relations for activation thresholds slip twinning is adopted to resolve polycrystalline microstructures over a broad te...

The shear failure mechanism of polycrystalline gas hydrates is critical for understanding marine geohazards related to under a changing climate and safe recovery from hydrate reservoirs. Since current experimental techniques cannot resolve the on spatial temporal nanoscale, molecular simulations can assist with proposing substantiating nanoscale mechanisms. Here, we report methane using direct ...

Microstructural evolutions during annealing of cold rolled AISI 304L and AISI 316L stainless steels were studied. Cold rolled AISI 304L alloy was fully martensitic but cold rolled AISI 316L alloy was partially martensitic due to the higher stability of the austenite phase in the latter. During continuous heating to elevated temperatures, the complete reversion of strain-induced martensite at 75...

Defect-free graphene is believed to be the strongest material. However, effective strength of engineering used large-area in which defects are inevitable actually determined by fracture toughness, rather than intrinsic that governs breakage atomic bonds perfect graphene. Due limitations commonly adopted experiments, conventional continuum mechanics–based methods and fully atomistic simulations,...

scanning hall probe microscopy (shpm) is a scanning probe microscopy technique developed to observe and image magnetic fields locally. this method is based on application of the hall effect, supplied by a micro hall probe attached to the end of cantilever as a sensor.  shpm provides direct quantitative information on the magnetic state of a material and can also image magnetic induction under a...