Influence of Heat Input and Filler Metal on Mechanical Properties and Microstructure of Microalloyed High Strength Steel Welded by FCAW

AbstractCurrently, microalloyed high strength steels are being widely used to replace C and C-Mn steels for their advantages in terms of mechanical properties, corrosion resistance and weldability, allowing weight reduction of vehicles and structures without impairing their strength. When these steels are welded, the welding heat cycle causes microstructural changes that alter their original properties. The heat input (HI: heat input) is one of the main variables to consider when these modifications are evaluated. The final properties of the welded joint are also defined by the type of consuma...

• Assuntos:

  • Key-words: Microalloyed steels
  • Mechanical properties
  • Microstructure
  • Welded joint
  • Cored wire