Search for dissertations about: "cold work hardening process"

Found 4 swedish dissertations containing the words cold work hardening process.

  1. 1. Experimental and numerical evaluation of heat transfer in the press hardening process

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Per Salomonsson; Luleå tekniska universitet.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Abstract : In recent decades, the use of high- and ultra high strength steels in modern car bodies has increased drastically. This is due to both severe legislation of passenger passive safety and the recent year's effort to reduce fuel consumption to decrease environmental harmful emissions. READ MORE

  2. 2. Structure and mechanical properties of dual phase steels An experimental and theoretical analysis

    University dissertation from Stockholm : KTH

    Author : Ylva Granbom; KTH.; Högskolan Dalarna.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering Metallurgical process and manufacturing engineering; TEKNIKVETENSKAP Kemiteknik Metallurgisk process- och produktionsteknik; Dual phase steels; continuous annealing; dilatometry; microstructure; mechanical properties; process parameters; dislocation model; plastic deformation; Mikrostrukturutveckling i avancerade höghållfasta stål; dual phase steels;

    Abstract : The key to the understanding of the mechanical behavior of dual phase (DP) steels is to a large extent to be found in the microstructure. The microstructure is in its turn a result of the chemical composition and the process parameters during its production. READ MORE

  3. 3. Determination of Flow Stress and Coefficient of Friction for Extruded Anisotropic Materials under Cold Forming Conditions

    University dissertation from Stockholm : Industriell produktion

    Author : Han Han; KTH.; [2002]
    Keywords : Anisotropy; Friction coefficient; Flow stress; Modified Two-specimen Method and FE-analysis;

    Abstract : The work material in metal working operations always showssome kind of anisotropy. In order to simplify the theoreticalanalysis, especially considering bulk deformation processes,anisotropy is usually neglected and the material is assumed tobe isotropic. READ MORE

  4. 4. On the low primary water stress corrosion cracking susceptibility of weld deformed Alloy 690

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Rickard Shen; KTH.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solid Mechanics; Hållfasthetslära; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : It has been shown in recent years that the nickel-base Alloy 690 can become susceptible to stress corrosion cracking (SCC) in the primary water of nuclear power plants with pressurized water reactors if it has been sufficiently deformed at room temperature. Although the material is not intentionally used in a deformed state, it can become deformed by various manufacturing processes. READ MORE