Influence of the recrystallized surface layer on the mechanical properties of ZhS6U alloy castings

Improvement of creep rupture strength of a liquid metal cooling directionally solidified nickel-base superalloy by carbides

“…The effectiveness of discontinuous carbide precipitation along with grain boundaries in improving creep rupture life has been reported by Gittins [3]. Also, the creep rupture strength can be improved by increasing the degree of the discrete distribution of carbides, which was controlled by suitable minor zirconium addition in a conventionally solidified superalloy [4]. Baldan [5] further proved that increasing the carbide particle density or decreasing the carbide particle spacing drastically decreases the creep cavity density, which was beneficial to stress-rupture properties.…”