Influence of the aging time on the microstructure and electrochemical behaviour of a 15-5PH ultra-high strength stainless steel

Effect of Manufacturing Parameters on the Mechanical and Corrosion Behavior of Selective Laser‐Melted 15‐5PH Stainless Steel

“…All fitting data from EIS analysis are listed in Table . The value of R f can reflect passive and corrosion product film stability of the selective laser‐melted 15‐5PH stainless steel . When laser power was 230 W and scanning speed was 886 mm s −1 , R f of the samples was maximum (≈2.002 × 10 5 Ω cm 2 ).…”

“…15‐5PH is an ultra‐high‐strength martensite stainless steel with ideal strength and good corrosion resistance and is widely used in aerospace, marine engineering, and automotive industries . The outstanding mechanical properties are due to precipitation enhancement of fine and dense Cu‐rich precipitates and carbide precipitates distributed between martensite laths .…”

Pitting corrosion of 17-4PH stainless steel manufactured by laser beam melting

“…Furthermore, microstructural changes due to the ageing heat treatment described before can also impact the corrosion behaviour of MSSs, and more precisely their susceptibility to pitting corrosion and intergranular corrosion; this has been shown for conventional SSs [29][30][31][32]. The pitting potential for these materials is closely linked with the chemical composition and structure (defects, grain boundaries…) of the passive film, which is strongly related to the microstructure of the substrate [33].…”

Effect of Pre-passivation on the Corrosion Behavior of PH13-8Mo Stainless Steel in Industrial—Marine Atmospheric Environment

“…It was well-acknowledged that the surface active sites such as inclusions, precipitates and the weak passive film region, were generally assigned as the pitting nucleation locations (Vignal et al, 2014). In PH13-8Mo stainless steel, there were a large amount of Cr-rich M 23 C 6 precipitates, which induced the emergence of the Cr-depleted zones around the precipitates (Luo et al, 2018), as shown in Figure 2. The surface passive film over the Cr-depleted regions was known to be weak and thus led to the preferential attack (Ryan et al, 2002;Bonagani et al, 2018) by the high concentration of the chloride ion in the industrial-marine atmosphere, which created a priority for the pitting nucleation.…”