...Hongsuk Lee; Vikas Tomar Polycrystalline tungsten is considered as an important material in aerospace, automobile, and energy industries due to its excellent thermal and mechanical properties. While grain boundaries (GBs) are perceived to play a major role in polycrystalline tungsten failure...

... in the finite element model where the grain boundary was taken as the primary path for oxygen diffusion. The model has been used to simulate natural diffusion of oxygen at temperatures between 650 ∘ C and 800 ∘ C , which are controlled by the parabolic oxidation rate and oxygen diffusivity. To study the effects...