Creep limit
The creep limit is the maximum stress value at which a material does not permanently deform under constant load and high temperature over a long period. It determines the load-bearing capacity of components in hot environments.
Physikalisch-chemischer Wirkmechanismus
Creep limit describes the behavior of a material under continuous mechanical load at high temperatures. The material deforms slowly but continuously without sudden cracking.
Metallurgical Relevance & Welding Risks
At stresses above the creep limit, the material can deform over time and impair its mechanical properties. This leads to unwanted deformation of components, which can be especially dangerous in power plant parts.
Werkstattpraxis & Handlungsanweisungen
To account for the creep limit, always consider the specific mechanical properties of the material when selecting and designing components for high-temperature service. If stresses exceed the creep limit, reduce the load or use a stronger material.