Sökning: "weld metal"

Visar resultat 1 - 5 av 49 avhandlingar innehållade orden weld metal.

  1. 1. Welds in the lean duplex stainless steel LDX 2101 : effect of microstructure and weld oxides on corrosion properties

    Författare :Elin M. Westin; John Ågren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Duplex stainless steel; welding; weld metal; HAZ; nitrogen; manganese; austenite formation; phase balance; precipitates; pitting resistance; heat input; solidification; element loss; evaporation; deposition; weld oxides; discoloration; mechanical properties; thermo-mechanical simulation; Geeble; GTA; laser; LOM; SEM; EDS; TEM; Leco; EPMA; ferroxyl test; XPS; post weld cleaning; pickling; Materials science; Teknisk materialvetenskap;

    Sammanfattning : Duplex stainless steels are a very attractive alternative to austenitic grades due to their higher strength and good corrosion performance. The austenitic grades can often be welded autogenously, while the duplex grades normally require addition of filler metal. LÄS MER

  3. 2. Microscopy and microanalysis of bainitic weld metal

    Författare :Bertil Josefsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; atom probe analysis; weld metal; phase transformation; dilatometry; microstructure; mechanical properties; bianite; electron microscopy; chromium-molybdenum steel;

    Sammanfattning : .... LÄS MER

  4. 3. Microstructure and mechanical properties of chromium steel weld metals

    Författare :Guang-Jun Cai; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CrMo steel; phase transformation; weld metal; toughness; microstructure; precipitate; strength;

    Sammanfattning : .... LÄS MER

  5. 4. Weld Metal Properties for Extra High Strength Steels

    Författare :Kenneth Håkansson; KTH; []
    Nyckelord :Welding parameters toughness 690 MPa steel preheat temperature;

    Sammanfattning : .... LÄS MER

  7. 5. Super duplex stainless steels : Microstructure and propertiesof physically simulated base and weld metal

    Författare :Vahid Hosseini; Leif Karlsson; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Super duplex stainless steel; weld metal; physical simulation; phase balance; precipitation; secondary phases; corrosion; nitrogen loss; arc heat treatment; production technology; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    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