In situ investigation of phase distribution and weld solidification in duplex stainless steels using laser-induced breakdown spectroscopy (LIBS)
- Welding processes of duplex stainless steels cause an unbalanced austenite (γ)/ferrite (δ) ratio due to high cooling rates and changes in chemical composition. That causes a degradation of mechanical properties and corrosion resistance. In situ monitoring of the weld pool is to be realized with the help of laser-induced breakdown spectroscopy (LIBS). A major advantage of this technique is the highly accurate time and spatially resolved measurement of the chemical composition during welding. Previous research has established that the LIBS method is suitable to detect chemical elements during welding and to show a distribution of selected elements. Chemical composition in the WM and HAZ can now be quantified using calibration curves generated by certified reference materials (CRM). Furthermore, a cooling rate can be plotted against the measured electron temperature.
Autor*innen: | Lukas QuackatzORCiD |
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Koautor*innen: | Axel GriescheORCiD, Thomas KannengießerORCiD |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2021 |
Organisationseinheit der BAM: | 9 Komponentensicherheit |
9 Komponentensicherheit / 9.4 Integrität von Schweißverbindungen | |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | In situ measurement; LIBS; TIG welding; WRC 1992 diagram; duplex stainless steel |
Themenfelder/Aktivitätsfelder der BAM: | Material |
Material / Degradation von Werkstoffen | |
Veranstaltung: | 2nd International Conference on Advanced Joining Processes |
Veranstaltungsort: | Sintra, Portugal |
Beginndatum der Veranstaltung: | 21.10.2021 |
Enddatum der Veranstaltung: | 22.10.2021 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 27.10.2021 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |