Materials and welding metallurgy
IRA / ARA / CCT
IRA / ARA / CCT – interactive engineering module focused on CCT diagram steel. Learning format: Simulator · Interactive visualisation. Explains the principle, technical relationships and practical use.
SimulatorInteractive visualisation
Open interactive module →Topic overview
Isothermal transformation of austenite at constant temperature. The original interactive module remains available.
Continuous-cooling transformation. The original interactive module remains available.
Relationship between cooling rate, the welding thermal cycle and microstructures in the HAZ.
What the module covers
- IRA diagram
- ARA / CCT diagram
- Welding CCT / HAZ
Educational content does not replace current standards, approved WPS/WPQR documentation or decisions by competent welding coordination personnel.
Related engineering terms
The module connects these terms with practical engineering explanations:
CCT diagram steelTTTCCTmartensitebainite
Continue with the practical module.
Open this topic directly in the interactive WeldScope portal.