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AiF-Project: Prozesssimulation des Carbonitrierens pulvermetallurgischer Stähle

M.Sc. James Damon

Motivation

  • Economical optimization of process times for carbonitriding by means of thermo-chemical diffusion simulation in dependency of alloying elements
  • Increase of wear resistance and fatigue limits by means of optimized carbon- and nitrogen-profiles

Aim

  • Development, verification und validation of a two-step simulation model
    • Carbonitriding-process-simulation in dependency of process parameters with output data for the second simulation
    • Thermomechanical Finite-Element-Simulation to predict residual stress and microstructural evolution

Investigations

  • Processsimulation of carbonitriding in dependency of porosity, temperature and alloying elements
  • Time-Temperature-Transformation diagrams in dependency of nitrogen and carbon content
  • Thermomechanical charakterization of phase specific strength values
  • Finite-Element-Varianten-Calculation for numerical optimization of the residual stress profile
  • Durability tests on optimized samples