Mn–Co alloys were electroplated on AISI 430 stainless steel using an electrodeposition technique with the aim to reduce oxidation and chromium volatilization. The electroplating parameters designed improve coating quality. increased current density decreased MnSO4 content resulted in a denser layer. A sample coated 0.10 M CoSO4 0.50 at 350 mA cm−2 showed best resistance after being oxidized 800...

The carbon steel B450C and low chromium SS 430 ferritic samples were exposed for 30 days to chloride-containing (5 g L?1 NaCL) cement extract solution. initial pH ? 13.88 decreased 9.6, associated mainly with the consumption of OH? ions formation ?-FeOOH, ?-FeOOH, Fe3O4 Cr(OH)3, as suggested by XRD XPS analysis, in presence CaCO3 NaCl crystals. deep corrosion damages on observed around particle...

Niobium is an important alloying element in the design of heat-resistant ferritic stainless steels for automotive exhaust systems. When in solid solution, it improves both the high temperature strength and the resistance to thermal fatigue. However, it also forms several kinds of precipitates during service. These reactions have been modelled, taking into account the multicomponent nature of th...

The load partitioning between the two phases in a cold rolled duplex stainless steel sheet have been experimentally studied in situ during loading, via X-ray diffraction, for different loading directions. The microstresses in the two phases were found to decrease when loading in the transverse direction, while they increase during loading in the rolling and 45°-direction. Due to strong crystall...

In sheet metal forming (SMF), deformation is caused by the relative movement between and tool, which generates friction forces. However, materials behave differently during plastic deformation. this study, a tribo-simulator was designed to investigate effect of different contact conditions or formability tests on tribological behavior AISI 304 430 stainless-steel sheets. The effects texture mic...

Many of the degradation mechanisms relevant to power plant components can be exacerbated by stresses that reside within the material. Good design or structural integrity assessments require therefore, an accounting of residual stresses, which often are introduced during welding. To do this it is necessary to characterise the stresses, but this may not be possible in thick components using non-d...