2026-04-17T12:50:31Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1500102025-11-19T20:35:04Zcom_2072_1057col_2072_478796col_2072_478917

00925njm 22002777a 4500 dc Tahchieva, Alisiya Biserova author Cabrera, José-María author Llorca i Isern, Núria author 2020-02-12T15:38:03Z 2020-02-12T15:38:03Z 2020-01-01 2020-02-12T15:38:03Z In this study, the effect of a plasma ion carburizing process to duplex and superduplex stainless steels (DSS and SDSS), at 925 °C for a long time, as thermochemical process influencing the microstructural evolution is presented. The objective is to analyse the diffusion elements' influence on the precipitation of secondary phases after additional short thermal treatment. A comparison among the different treatments was performed after the resulting microstructures were analysed by Field Emission - Scanning Electron Microscope. Precipitation of secondary phases¿sigma (σ), chi (χ), nitrides and carbides¿seemed to occur during the treatments in a similar way for both steels (DSS and SDSS), although they showed a different morphology and precipitation mode. General corrosion behaviour of untreated and treated samples was investigated by potentiodynamic tests in order to prove their corrosion resistance. It was found that an improvement of the surface protection after the plasma carburizing process occurred. Corrosió i anticorrosius Acer inoxidable Transformacions de fase (Física estadística) Corrosion and anti-corrosives Stainless steel Phase transformations (Statistical physics) Study of the thermochemical surface treatment effect on the phase precipitation and degradation behavior of DSS and SDSS