|About this Abstract
||3rd World Congress on High Entropy Alloys (HEA 2023)
||Solid Solution Strengthening on CrCoNi-(Pd,V) Alloys
||Pedro Fernandes Oliveira, Francisco Gil Coury, Claudemiro Bolfarini
|On-Site Speaker (Planned)
||Pedro Fernandes Oliveira
This study examined the impact of adding vanadium (V) and palladium (Pd) on the mechanical properties and deformation mechanisms of CrCoNi alloys. Pd and V (10% at) were added to the CrCoNi system, resulting in a face-centered cubic (FCC) solid solution. The addition of Pd led to a significant change in atomic mismatch, while the electronegativity of the system remained relatively unchanged. On the other hand, the addition of V aimed to create a notable difference in electronegativity without greatly affecting the atomic mismatch. Mechanical properties were assessed through hardness and tensile tests at room temperature. X-ray diffraction analysis using synchrotron radiation was performed during the tensile test to examine microstructural changes and understand deformation mechanisms. Fractured samples were analyzed using scanning electron microscopy and transmission electron microscopy. Results showed that V and Pd additions enhanced the hardness and mechanical properties compared to the equiatomic Cr33Co33Ni33 alloy.
||Planned: Metallurgical and Materials Transactions