• Curado, T.
• Schell, N.
• Maawad, E.
• Oliveira, J. P.
• Lopes, João G.
• Kim, H. S.
• Dias, P.

Abstract

The research regarding high entropy alloys (HEAs) has proved them to be suitable for engineering applications.Nevertheless, assessing their processability is key for industrial deployment. Of special relevance in terms of processingtechniques arised welding. In this work, Gas Tungsten ArcWelding (GTAW) was chosen as a processing method to attestfor the suitability of the equiatomic CoCrFeMnNi HEA for one of the most common real-world mechanical solicitations,tensile loading. We delve into an in-situ synchrotron X-ray diffraction analysis of the mechanical behavior of a high-performingGTAW CoCrFeMnNi HEA joint. Local analysis of the microstructure evolution, considering the base material,heat affected zone and fusion zone, was performed by tracking changes in the diffracted intensity and lattice strain.Orientation-dependent evolution is highlighted by considering partial azimuthal integration detailing texture impact acrossthe joint. Evidence of strain concentration at specific locations is correlated with the microstructure and overall macroscopicmechanical behavior.

Topics

• impedance spectroscopy
• microstructure
• x-ray diffraction
• texture
• tungsten