Effect of Cooling Rate on the Corrosion Behavior of As-Cast SAF 2205 Duplex Stainless Steel After Solution Annealing Treatment

Temperature and time effect of thermal aging treatment on microstructure and corrosion resistance of UNS S31803 duplex stainless steel

“…The thermal treatment of solubilization is usually performed between 1000-1200°C, followed by cooling in water, to avoid the precipitation of undesirable intermetallic phases (Arturo, Hugo, Rafael, Egberto & Antonio, 2015, Majid & Shahi, 2020, Sáenz et al, 2020, Zeng et al, 2019. The thermal treatment of aging aims at promoting the precipitation of intermetallic phases such as α', σ and χ, and it can be performed after the thermal treatment of solubilization, for the steel to present only the desired phases according to the application (Berecz, Fazakas, Mészáros & Sajó, 2015, Chail & Kangas, 2016, Cronemberger et al, 2014, Cronemberger, M. E. R., Nakamatsu, S., Rovere, C. A. D., Kuri, S. E. & Mariano, N. A., 2015. Phase α' is a precipitate rich in chromium and it occurs inside α, it presents a body-centered cubic (BCC) structure, coherent with the ferritic matrix, and since it has low energy of interface with the ferritic matrix, it presents high resistance to coalescence (Chen & Limin, 2015, Cronemberger et al, 2015, Hilders, Zambrano & Ochoa, 2018, Jinlong, Tongxiang, Lacerda, Cândido, & Godefroid, 2015.…”

“…The thermal treatment of aging aims at promoting the precipitation of intermetallic phases such as α', σ and χ, and it can be performed after the thermal treatment of solubilization, for the steel to present only the desired phases according to the application (Berecz, Fazakas, Mészáros & Sajó, 2015, Chail & Kangas, 2016, Cronemberger et al, 2014, Cronemberger, M. E. R., Nakamatsu, S., Rovere, C. A. D., Kuri, S. E. & Mariano, N. A., 2015. Phase α' is a precipitate rich in chromium and it occurs inside α, it presents a body-centered cubic (BCC) structure, coherent with the ferritic matrix, and since it has low energy of interface with the ferritic matrix, it presents high resistance to coalescence (Chen & Limin, 2015, Cronemberger et al, 2015, Hilders, Zambrano & Ochoa, 2018, Jinlong, Tongxiang, Lacerda, Cândido, & Godefroid, 2015. The precipitation of phase α' is associated to the diffusion of chromium and, therefore, it promotes the formation of regions poor in chromium around it.…”

Influence of Molybdenum on Microstructure and Pitting Corrosion Behavior of Solution-Treated Duplex Stainless Steel in a Lithium Chloride Solution

“…The alloy element molybdenum is a stabilizer of the ferrite phase and its addition to duplex stainless steel (DSS) is usually of around 4%. Higher rates foster the precipitation of intermetallic phases (chi-χ and sigma-σ), especially when exposed to high temperatures [12][13][14][15][16][17][18][19][20] .…”

A study on corrosion behaviors of laser cladded Fe−Cr−Ni coating in as‐cladded and machined conditions

“…The solidification and cooling rates during laser cladding influence the corrosion resistance of metallic parts. Cronemberger et al revealed that a slow cooling rate during solidification results in reduction of corrosion resistance because of the dilution of Cr element. In our previous study, the duplex ferrite and austenite microstructures formed due to the high solidification and cooling rates during laser cladding.…”