Peritectic point
The peritectic point is a specific temperature point in a phase diagram where a reaction between a solid and a liquid phase leads to the formation of a new solid phase. This affects the high-temperature stability of alloys.
Physikalisch-chemischer Wirkmechanismus
The peritectic point marks a specific temperature at which a new phase forms in a metal through a reaction between a solid and a liquid phase. This process can cause changes in the structure and the formation of new crystal phases.
Metallurgical Relevance & Welding Risks
When welding, metals near the peritectic point can be more susceptible to phase transformations and deformations. This can lead to quality issues such as uneven stresses, cracks, or altered mechanical properties. It is important to set the welding parameters so that the process avoids this critical temperature range.
Werkstattpraxis & Handlungsanweisungen
To minimize the risk of phase transformations, welding temperatures and times should be precisely controlled for metals with a low peritectic point. Use special welding processes such as gas-shielded welding or post-weld heat treatments for such materials to ensure the metal structure remains stable.