Residual Stress Study in Oxide Scale Obtained on High Temperature Oxidation of AISI 430 Stainless Steel
The objective of this work was to investigate high temperature oxidation behavior of AISI 430 stainless steel, which was proposed to use as interconnector in the planar solid oxide fuel cells (SOFCs). The oxidation of the alloy has been conducted at 700°C, 800°C and 900°C for 12h-96h by thermal gravimetric analysis (TGA) system. The oxide surface morphology, cross-section microstructure and the chemical composition of the oxide scales were performed by FEG-SEM and EDX. The X-ray diffraction (XRD) was used to identify the oxide phases formed on the alloy and to determine the residual stress in the scale. It has been found that the oxide scale composed of a inner Cr2O3 layer and an outer Mn1.5Cr1.5O4 layer. The residual stresses in both oxide layers are compressive and the residual stress evolutions in the two layers are different according the oxidation temperature.
M. François, G. Montay, B. Panicaud, D. Retraint and E. Rouhaud
N. Li et al., "Residual Stress Study in Oxide Scale Obtained on High Temperature Oxidation of AISI 430 Stainless Steel", Advanced Materials Research, Vol. 996, pp. 918-923, 2014