Improving welding stresses by filler metal and heat control selection in component-related butt joints of high-strength steel

  • The application of high-strength fine-grained structural steels with yield strengths greater than or equal to 690 MPa expands because of present light weight design trends. The requirements regarding the welded components safety increased due to high loading capacity. This determines a sustainable and economic application as well. However, high welding residual stresses could diminish the components safety, especially due to high restraint conditions in component or repair welds. Therefore, this work is concerned with global and local welding stresses, especially crack-critical welding stresses in the HAZ and while root welding due to the restraint conditions. Restraint intensities of real components were analysed and realised with two different weld tests, alongside two different plate dimensions and steel grades. A comparison of the test results showed several significant effects for heat control and restraint intensity regarding restraint forces and local welding stresses. AmongThe application of high-strength fine-grained structural steels with yield strengths greater than or equal to 690 MPa expands because of present light weight design trends. The requirements regarding the welded components safety increased due to high loading capacity. This determines a sustainable and economic application as well. However, high welding residual stresses could diminish the components safety, especially due to high restraint conditions in component or repair welds. Therefore, this work is concerned with global and local welding stresses, especially crack-critical welding stresses in the HAZ and while root welding due to the restraint conditions. Restraint intensities of real components were analysed and realised with two different weld tests, alongside two different plate dimensions and steel grades. A comparison of the test results showed several significant effects for heat control and restraint intensity regarding restraint forces and local welding stresses. Among these effects, substantial influences were found for the filler metal selection with partially altered results for root and filler beads. Local stresses of weld seam and HAZ were affected differently.zeige mehrzeige weniger

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Metadaten
Autor*innen:Dirk SchröpferORCiD, Arne KrommORCiD, Thomas KannengießerORCiD
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Welding in the world
Jahr der Erstveröffentlichung:2015
Herausgeber (Institution):International Institute of Welding
Verlag:Springer
Verlagsort:Oxford
Jahrgang/Band:59
Ausgabe/Heft:3
Erste Seite:455
Letzte Seite:464
Freie Schlagwörter:High-strength steels; MAG welding; Process parameters; Residual stresses; Restraint
DOI:10.1007/s40194-014-0219-7
ISSN:0043-2288
ISSN:1878-6669
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:12.02.2015
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