A New Approach to Simulate HSLA Steel Multipass Welding through Distributed Point Heat Sources Model

• Published in: Metals (Basel ) Vol. 8; no. 11; p. 951
• Main Authors: Ferreira, Dario, Alves, Antonio, Cruz Neto, Rubelmar, Martins, Thiago, Brandi, Sérgio
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.11.2018
• Subjects: API 5L X80 steel; Boundary conditions; distributed point heat sources model; Filler metals; Flux core wire welding; Gas metal arc welding; Heat affected zone; Heat sources; Heat transfer; Heat transmission; Heating; High strength low alloy steels; local brittle zone; Local brittle zones; Mechanical properties; medium thick plate model; Microstructure; Photomacrographs; Physical properties; Radiation; Short circuits; Simulation; Software packages; Temperature; Temperature dependence; Thick plates; Welded joints; Welding fluxes; welding thermal cycles

Mechanical properties of welded joints depend on the way heat flows through the welding passes. In multipass welding the reheating of the heat affected zone (HAZ) can form local brittle zones that need to be delimited for evaluation. The difficulty lies in the choice of a model that can simulate mul...