Transformation, stability and Pourbaix diagrams of high performance corrosion resistant (HPCRM) alloys

Computational Materials Design

“…Sundman et al [24] have suggested that it Fig. 10 Comparison of calculated mobilities for Fe, Cr, Mo, B and C used in the calculation of devitrification kinetics of SAM7 [7] with correlation proposed by Faupel et al [23] Fig. 11 Cyclic polarization measurements of an amorphous melt spun ribbon of alloy SAM40 in seawater at pH = 6.4 and 90°C after annealing for 5 min at 600°C.…”

“…Calculated and experimental kinetics of formation of P phase and Ni 2 Cr phase in alloy C-22 [6] Basic and Applied Research: Section I current results for the mobility of B, C, Fe, Cr and Mo used in the current calculations [7] with the correlations developed by Faupel et al [23] shown in Fig. 10, which indicates that the descriptions that are required to describe the observed formation and devitrification of amorphous iron alloys are in general accordance with comparable observations on other alloy systems.…”

“…Figure 13 shows the calculated Pourbaix diagram for SAM40 in seawater at 90°C. 9 Calculated kinetics of devitrification for amorphous Fe-B-C-Mo-W alloy SAM7 [7] Basic and Applied Research: Section I Figures 14 and 15 show how the CALPHAD method can be applied to help archeological studies. The calculations were performed in support of field work performed by Professor Heather Lechtman at MIT.…”

“…[7] Section I: Basic and Applied Research Figures 11-13 show experimental measurements and calculations of the corrosion behavior of SAM40 which is an amorphous Fe-Cr-Mo-B-C alloy. [7] Figure 11 shows the results of cyclic polarization measurements at 90°C in seawater at pH = 6.4 for an amorphous melt spun ribbon that was annealed at 600°C for 5 min before cyclic polarization testing. Based on the results of Fig.…”

“…Figures 8-13 apply the same techniques for investigation of the fabrication and application of amorphous iron coatings for large waste package structures in repository settings. [7] This problem posed several additional challenges since the amorphous alloys contained Fe-Cr-Mo-B and C and although ThermoCalc databases are available for the liquid phase and for the M 3 B phases, which were chosen to be surrogates for the amorphous and devitrification Fig. 2 The activation energy of formation calculated for a martensite embryo in an Fe-30Ni alloy [3] Fig.…”