Sökning: "cast steel"

Visar resultat 1 - 5 av 66 avhandlingar innehållade orden cast steel.

  1. 1. High Temperature Corrosion of Cast Irons and Steels

    Författare :Frédéric Tholence; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high temperature corrosion; cast steel; austenitic stainless steel; SiMo; cast iron; oxidation; exhaust gases; Ni-resist; LCF; ferritic stainless steel;

    Sammanfattning : During the last decades, tougher competition and stiffer government policies have forced the automotive industry into a race for safer, cleaner and more fuel-efficient vehicles at low cost. As a consequence, exhaust systems should resist to increased working temperatures. LÄS MER

  3. 2. Fatigue Assessment of Cast Components : Influence of Cast Defects

    Författare :Anders Björkblad; Jack Samuelsson; Gary Marquis; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cast nodular iron; fatigue; design rules; fracture mechanics; Vehicle engineering; Farkostteknik;

    Sammanfattning :  This thesis is on the fatigue assessment of cast components with special attention to defects. The primary material in view is nodular cast iron, but also cast steel is considered. However, the fatigue behaviour is in principle valid for general use on other cast metals. LÄS MER

  4. 3. Microstructural Evolution In As-cast Alloys during Plastic Deformation

    Författare :Mitra Basirat; Pär Jönsson; Hasse Fredriksson; Jacques Lacaze; KTH; []
    Nyckelord :plastic deformation; compression test; recrystallization; deformation band; As-cast; microsegregation; carbide dissolution; disordered structure; order disorder transformation; twining; steel; β brass; copper; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ;

    Sammanfattning : The effect of deformation on microstructural changes in metals and alloys is the subject of considerable practical interest. The ultimate goal is to control, improve and optimize the microstructure and texture of the finished products produced by metal forming operations. LÄS MER

  5. 4. Oxidation and corrosion fatigue aspects of cast exhaust manifolds

    Författare :Madeleine Ekström; Stefan Jonsson; Ulf Olofsson; Babette Tonn; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cast exhaust manifolds; high-temperature corrosion; high-temperature low-cycle fatigue; high-temperature corrosion fatigue; ductile cast irons; cast stainless steel; Materials Science and Engineering; Teknisk materialvetenskap;

    Sammanfattning : Emission regulations for heavy-duty diesel engines are becoming increasingly restrictive to limit the environmental impacts of exhaust gases and particles. Increasing the specific power output of diesel engines would improve fuel efficiency and greatly reduce emissions, but these changes could lead to increased exhaust gas temperature, increasing demands on the exhaust manifold material. LÄS MER

  7. 5. Corrosion of steel in concrete at various moisture and chloride levels

    Författare :Johan Ahlström; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steel; rebar; concrete; corrosion; chloride threshold level; moisture;

    Sammanfattning : About 7000 concrete bridges in Sweden were built before 1965. The annual cost for maintenance of these bridges is about 0.6% of their total value. The cooling water tunnels at Swedish nuclear power plants have been exposed to seawater for about 30-40 years. LÄS MER