Search for dissertations about: "Thesis Duplex Stainless Steel corrosion sigma phase"
Found 3 swedish dissertations containing the words Thesis Duplex Stainless Steel corrosion sigma phase.
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1. Transformation phenomena in a super duplex stainless steel
Abstract : Duplex stainless steels consist of about equal fractions offerrite and austenite and are attractive due to their highcorrosion resistance against pitting corrosion and stresscorrosion cracking. The pitting corrosion resistance can bedescribed by the PREN value which is defined asPREN=%Cr+3.3*%Mo+16*%N. READ MORE
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2. Influence of multiple welding cycles on microstructure and corrosion resistance of a super duplex stainless steel
Abstract : Super duplex stainless steel (SDSS) has found a wide use in demanding applications such as offshore, chemical and petrochemical industries thanks to its excellent combination of mechanical properties and corrosion resistance. Welding of SDSS, however, is associated with the risk of precipitation of secondary phases and formation of excessive amounts of ferrite in the weld metal and heat affected zone. READ MORE
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3. Super duplex stainless steels : Microstructure and propertiesof physically simulated base and weld metal
Abstract : High-temperature processing and application of super duplex stainless steel(SDSS) are associated with the risk of changes in the ferrite/austenite balance and precipitation of secondary phases. This study was therefore aimed at improving knowledge about effects of thermal cycles on the microstructure and properties of SDSS base and weld metal. READ MORE