Sökning: "leif karlsson"
Visar resultat 21 - 25 av 27 avhandlingar innehållade orden leif karlsson.
21. Influence of multiple welding cycles on microstructure and corrosion resistance of a super duplex stainless steel
Sammanfattning : 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. LÄS MER
22. Super duplex stainless steels : Microstructure and propertiesof physically simulated base and weld metal
Sammanfattning : 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. LÄS MER
23. Experimental study on cold lap formation in tandem gas metal arc welding
Sammanfattning : .... LÄS MER
24. Effect of heat treatment on microstructure and mechanical properties of a 5 wt.% Cr cold work tool steel
Sammanfattning : This work presents investigations related to phase transformations occurring inthe 5 wt.% Cr cold work tool steel Caldie during hardening and tempering treatments. LÄS MER
25. Microstructure and mechanical properties of a 5 wt.% Cr cold work tool steel : Influence of heat treatment procedure
Sammanfattning : The demand for Advanced High Strength Steel (AHSS) in the automotive industry is increasing day by day. It is mainly motivated by the fact that AHSS can be used as thin sheets while having high strengths. LÄS MER