Herstellung,Verarbeitung und Eigenschaften höherfester Stähle für den Einsatz in Windenergieanlagen

Production, processing and properties of higher‐strength steel plates for application in wind energy plants. The mechanical and technological demands on steels for offshore wind energy plants are high. Advanced technologies in steel production make normalized or thermomechanically rolled plates with minimum yield strengths up to 460 MPa as well as quenched and tempered steels with minimum yield strengths from 520 up to 1100 MPa available for construction. Plates with up to 460 MPa are well established for building wind energy plants. Material properties and processing of these steel grades are well known. High‐strength steels offer further possibilities for construction. These steels are characterised by high yield strength and at the same time high toughness and excellent processing behaviour. By modern fracture mechanical safety concepts, it could be shown, that even under critical service conditions there can be guaranteed a high level of safety against brittle failure.