Sökning: "Strain hardening"

Visar resultat 1 - 5 av 130 avhandlingar innehållade orden Strain hardening.

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

    Författare :Magnus Hörnqvist; Chalmers University of Technology; []
    Nyckelord :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

  2. 2. Indentation effects in plastic zones

    Författare :Cecilia Eriksson; KTH; []
    Nyckelord :Hardness testing; Mechanical properties; Residual stress; Residual strain; Microindentation; Nanoindentation; Secondary indentation; Micro cracking; Strain Hardening; Pressure hardening; Pressure Sensitivity; AMF; FEM; Brittle materials;

    Sammanfattning : .... LÄS MER

  3. 3. On constitutive modelling in metal plasticity

    Författare :Kenneth Axelsson; Chalmers University of Technology; []
    Nyckelord :viscoplasticity; finite element; plasticity; Anisotropy; anisotropic strain hardening; Bauschinger effect; distortonal hardening; nonlinear hardening;

    Sammanfattning : .... LÄS MER

  4. 4. Improved Material Models for High Strength Steel

    Författare :Rikard Larsson; Larsgunnar Nilsson; Linköpings universitet; []
    Nyckelord :Plastic anisotropy; non-linear strain paths; mixed isotropic-kinematic hardening; isotropic-distortional hardening; dynamic strain ageing; static strain ageing; marten- sitic transformation;

    Sammanfattning : The mechanical behaviour of the three advanced high strength steel grades, Docol 600DP, Docol 1200M and HyTens 1000, has been experimentally investigated under various types of deformation, and material models have been developed, which account for the experimentally observed behaviour.Two extensive experimental programmes have been conducted in this work. LÄS MER

  5. 5. Modelling mechanical properties by analysing datasets of commercial alloys

    Författare :Johan Zander; Rolf Sandström; Stanislaw Zajac; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Aluminium alloys; modelling; material optimisation; mechanical properties; solid solution hardening; precipitation hardening; work-hardening; multiple regression; stainless steel; Materials science; Teknisk materialvetenskap;

    Sammanfattning : Commercial alloys are continuously developed to improve their performance. Therefore it is important to develop new optimisation software, which could be used in development of new materials or in materials selection. In this study the mechanical properties which are important in materials selection in mechanical design are investigated. LÄS MER