Intergranular corrosion of 6xxx series alloys has been attributed to the depletion of Si and/or Cu along grain boundaries. Susceptibility to IGC is, in general, strongly dependent on the thermal
Effect of artificial aging on intergranular corrosion of Generally, it is believed that intergranular corrosion of AleMgeSi alloys is associated with the microgalvanic coupling between b' phase, Q phase and other Mg, Si (or Cu)-rich grain boundary
Intergranular corrosion of iron-nickel-chromium alloys has been studied by means of potentiostatic attacks and observations in scanning electron microscopy. The alloys with high contents in chromium and nickel present stronger intergranular corrosion. The thermal etching of the same alloys and the analysis of bibliographic data allow to conclude that an increase of chromium and nickel contents
Influence of C, N and Ti concentration on the intergranular corrosion is the corrosion rate, eed in mm/month. The considered limit of sensitisation was a corrosion rate of 0.11 mm/month for test B and 0.08 mm/month for test C. The morphology of corrosion attack such as products and grain boundary precipitates was analysed by SEM and X-ray mapping. EXPERIMENTAL RESULTS AND DISCUSSION
Influence of Cooling Rate on Intergranular Corrosion in conditions, silumin casts may show occurrence of intergranular corrosion that reduces mechanical properties of the parts produced. The paper presents the influence of cooling rate R of a plate cast of aluminium alloy EN AC-AlSi7Mg0,3 on the depth of appearance of intergranular corrosion.
This paper discusses the influence of silicon additions and residual -ferrite on the resistance of 18Cr-8Ni-base alloys to IGC in the sensitized condition. Addition of silicon to an 18Cr-8Ni matrix over the range of 1 to 4.45% produced a residual -ferrite content ranging from 0 to 17%.