Search for dissertations about: "Equiaxed zone"

Found 4 swedish dissertations containing the words Equiaxed zone.

  2. 1. Factors Influencing the Formation of Shrinkage Porosity in Grey Cast Iron

    Author : Lennart Elmquist; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CET; Oxygen; Columnar zone; Grey iron; Shrinkage porosity; Equiaxed zone; Solidification; DAAS; Hydrogen; Primary austenite;

    Abstract : The presence of shrinkage defects is of major concern in the production of grey iron castings. This type of defect can penetrate through the casting as a three-dimensional network. READ MORE

  4. 2. Factors Influencing the Formation of Shrinkage Porosity in Grey Cast Iron

    Author : Lennart Elmquist; Ingvar Svensson; Attila Diószegi; Jarmo Tamminen; Jönköping University; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Shrinkage porosity; Grey iron; Solidification; Primary austenite; Equiaxed zone; Columnar zone; CET; DAAS; Oxygen; Hydrogen; Materials science; Teknisk materialvetenskap;

    Abstract : .... READ MORE

  5. 3. Influence of multiple welding cycles on microstructure and corrosion resistance of a super duplex stainless steel

    Author : Vahid Hosseini; Leif Karlsson; Högskolan Väst; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Super duplex stainless steel; autogenous TIG welding; multiple welding thermal cycles; sensitization; nitrogen loss; sigma phase; ferrite content; production technology; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    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

  6. 4. Investigation and modelling of friction stir welded copper canisters

    Author : Therese Källgren; Rolf Sandström; Hannu Hänninen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Friction Stir Welding FSW ; Copper; Welding; Finite Element Method FEM ; SKB; Material flow; Materials science; Teknisk materialvetenskap;

    Abstract : This work has been focused on characterisation of FSW joints, and modelling of the process, both analytically and numerically. The Swedish model for final deposit of nuclear fuel waste is based on copper canisters as a corrosion barrier with an inner pressure holding insert of cast iron. READ MORE