Modeling the effect of composition and thermal quenching on the fracture behavior of borosilicate glass

► During fracturation of borosilicate glasses, Na ions favor the cavity growth. ► Boron atoms in a 3‐coordinated environment favor plasticity of the structure. ► In glasses quenched rapidly, the Young's modulus decreases and the 3‐coordinated boron concentration increases. ► The decrease of the Young's modulus favors the cavity nucleation. ► The increase of the 3‐coordinated boron coordination favors the cavity growth.