Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Erscheinungsjahr
- 2023 (2)
Dokumenttyp
- Vortrag (2)
Sprache
- Englisch (2)
Referierte Publikation
- nein (2) (entfernen)
Schlagworte
- Microstructure characterization (2) (entfernen)
Organisationseinheit der BAM
Eingeladener Vortrag
- nein (2)
This presentation summarizes the latest research results of the influence of the post weld heat treatment (PWHT) rate and
the global mechanical stress conditions on the stress relief cracking (SRC) susceptibility of low-alloyed and creep-resistant CrMoV steel submerged arc weld joints. It was found that a certain effect of very low heating rates could be confirmed. In addition, the interlinking of SRC susceptibility increasing effects during the PWHT and the ex-post indentification in metallographic cross-section via microstructure characterization is very complex.
This presentation summarizes the latest results on the microalloying influence on the preciptitation behavior on the mechanical properties of welded high-strength steel with a design yield strength of 690 MPa and above. For that reason, Charpy tests were performed for the pure weld metal and different heat-affected zones. Thermodynamic phase field modeling showed the usefulness of calculations in Thermocalc to predict the preciptiation behavior and (finally) to conclude the mechanistic behavior of the welded joint.