Materials and welding metallurgy

Fe–Fe₃C

The iron–carbon diagram explains phases, transformation temperatures and microstructures in steels and cast irons. The module connects composition and thermal history with ferrite, austenite, cementite and pearlite.

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Topic overview

Note: The solid white line represents the teaching-model shift caused by alloying elements; the dashed line represents the basic Fe–Fe₃C system. Actual boundaries require suitable databases and the specific chemical analysis.

What the module covers

  • Interactive metastable Fe–Fe₃C diagram
  • Fe–Fe₃C diagram legend
  • Alloying elements
Educational content does not replace current standards, approved WPS/WPQR documentation or decisions by competent welding coordination personnel.