Sökning: "Plastic deformation"

Visar resultat 1 - 5 av 179 avhandlingar innehållade orden Plastic deformation.

  1. 1. Microstructural Evolution In As-cast Alloys during Plastic Deformation

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Mitra Basirat; KTH.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 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

  2. 2. Torque and Angle Controlled Tightening of Bolted Joints

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Göran Toth; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; torque controlled tightening; deformation parameters; momentary elongation; deformation factor; torque; Bolted screwed joints; spring characteristic; Torx; torque and angle controlled tightening; hexalobular; final torque; snug torque; Taylor’s series expansions; preload; plastic deformation; permanent elongation; yield; friction diameter; plastic spring constant; clevis; turn-of-nut method; bearing surface pressure; twisting; Monte-Carlo simulations;

    Sammanfattning : Reduced weight and fuel consumption, improved reliability and engine performance are the main requirements in the automotive industry of today. These requirements demand robust and optimized bolted joints, where a high amount of preload obtained by effective utilisation of the bolt is essential. LÄS MER

  3. 3. Influences of the Graphite Phase on Elastic and Plastic Deformation Behaviour of Cast Irons

    Detta är en avhandling från Institutionen för ekonomisk och industriell utveckling

    Författare :Torsten Sjögren; Högskolan i Jönköping.; Linköpings universitet.; Linköpings universitet.; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Materials science Construction materials; TEKNIKVETENSKAP Teknisk materialvetenskap Konstruktionsmaterial; Cast iron; Flake graphite; Compacted graphite; Spheroidal graphite; Elastic deformation; Plastic deformation; Modulus of elasticity; Graphite modulus of elasticity; Strength coefficient; Strain hardening exponent; Acoustic emission;

    Sammanfattning : The amount and morphology of the graphite phase largely controls the resulting properties of cast iron. For instance, in flake graphite cast irons the mechanical properties are low while the thermal conductivity is high. LÄS MER

  4. 4. Monotonic and Cyclic Plastic Deformation of High-Strength Aluminium Alloys

    Detta är en avhandling från Institutionen för ekonomisk och industriell utveckling

    Författare :Magnus Hörnqvist; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EN AW-7030; Heat treatment; Temperature effects; Dynamic precipitation.; Strain hardening; Precipitation hardening; Low cycle fatigue; Strain rate effects; AA7030; Al-Zn-Mg; Plastic deformation; Dynamic strain ageing; Mechanical properties;

    Sammanfattning : Dynamic strain ageing (DSA) and dynamic precipitation (DP) are two, closely interrelated, phenomena arising from the dynamic interaction between mobile solute atoms and dislocations. The occurrence of DSA and DP is confined to specific ranges of strain rate and temperature, and aluminium alloys are generally prone to experience DSA and DP already at ambient temperatures and conventional strainrates. LÄS MER

  5. 5. Modeling the behavior of inclusions in plastic deformation of steels

    Detta är en avhandling från Stockholm : Industriell produktion

    Författare :Chunhui Luo; KTH.; [2001]
    Nyckelord :Inclusion; Steel; Plastic deformation; Void; Rolling; Forging; Finite element; Mesomechanical approach;

    Sammanfattning : This doctoral thesis presents a modeling method fordemonstrating the behavior of inclusions and their surroundingmatrix during plastic deformation of steels.Inclusions are inescapable components of all steels. LÄS MER