Carburizing and Nitriding Model

Carbide Forming/Decomposing during Carburizing

For alloy steels with carbide forming elements, carbides may form during the carburizing process.
- The carburizing process should be designed and optimized to avoid detrimental carbides.
During low pressure carburizing (LPC) of high allow steels, carbide forms during the boost step, which provides an extra carbon source during the diffuse step.
- The amount of carbide forming, coarsening rate, and decomposing rate during the boost/diffuse steps affect the final result: surface carbon, case depth, and carbide distribution.
DANTE carburizing material model can be used to model carbide forming and decomposing.

For high alloy steels with carbide forming elements, carbide forming is unavoidable during LPC.
- With the DANTE material models (carburizing models), the boost/diffuse process can be designed to minimize the depth and amount of unwanted carbides.

DANTE Nitriding Model

DANTE Nitriding models include:
- Diffusion of nitrogen
- Formation and dissolving of ε-nitride (white layer)
- Formation and dissolving of γ-nitride (alloy nitride)
- Material volume expansion caused by nitriding
  - Necessary for distortion and residual stress simulation.

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