Open Access

Table 3

Release criteria, steady-state post-release gas pressures in grain face bubbles, and relaxation times for the considered release mechanisms for grain boundary gas. is the critical bubble gas pressure for grain boundary rupture and υ is a constant model parameter less than unity; see below.

Post-release Relaxation
Mechanism (i) for grain Criterion for gas pressure, time [s],
boundary fission gas release gas release τi
(1) Bubble interconnection ϕ2 ≥ 0.48 Ph + Ps 2
(2) Grain boundary rupture 0
(3) Grain boundary microcracking 2

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.