Steam oxidation of Super 304H and shot-peened Super 304H

An overview of the oxidation of Ni-based superalloys for turbine disc applications: surface condition, applied load and mechanical performance

“…Surface finish and residual stress underneath the surface are controlled and modified to improve the mechanical properties of in-service components. Various studies have established that the oxidation behaviour of stainless steels, Ni alloys and Fe-Cr alloys are dependent on the surface finish prior to oxidation [37][38][39][40][41][42][43][44][45][46][47]. Relatively little work has been conducted, however, on the effect of surface condition on the oxidation of Ni-based superalloys where most studies have examined the ideal highly polished or as-received machined condition [5-7, 15, 48].…”

The effect of thermal cycling on steam oxidation behaviour of TP347H FG at 650 °C

“…Previous experience with this rig has shown that under laboratory conditions, the air saturated steam environment generated in the rig produced oxide compositions and morphologies that replicate those seen in plant conditions for longer times, despite the fact deoxygenated steam is more representative of plant. Previous research has also shown that spallation does not occur under deoxygenated conditions, so air saturated steam has mainly been used in the current work to initiate spallation after the first thermal exposure [14]. Details of the testing performed are given in…”

“…This literature value is also for the total oxide thickness for TP347H FG from plant trials where the steam environment will be slightly different from those in this study. Rosser et al [14] found the parabolic rate constant for spinel on shot peened Super 304 H, with similar composition to TP347H FG, in deoxygenated steam to be 1.9 x 10 -16 m 2 s -1 .…”

Investigation on Oxidation Behavior of Super304H and HR3C Steel in High Temperature Steam from a 1000 MW Ultra-Supercritical Coal-Fired Boiler

“…Liang experimentally investigated the high temperature oxidation of the newly developed alloy 282 under the condition of flowing air and steam [15]. Also, the steam oxidation behavior of Super304H in simulating high temperature steam environment was studied in the laboratory [16]. Similarly, Yuan et al investigated the steam oxidation resistance of Super304H after different surface treatments of grinding (1000 grit with SiC papers), polishing (1 µm at last) and sandblasting, using an air-blast machine with Al 2 O 3 -SiO 2 mixture beads at 0.2-0.4 MPa [17].…”