|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||J-101: Influence of Compositional Complexity on Helium Accumulation and Bubble Formation in Concentrated Solid Solution Alloys
||Shaofei Liu, Da Chen, Ji-jung Kai
|On-Site Speaker (Planned)
High entropy alloys (HEAs) exhibit promising radiation damage tolerance due to their high-level lattice distortion and compositional complexity. The present work experimentally studied the helium accumulation and bubble formation in a group of HEAs with different principle components at different implantation temperatures. The size and population density of helium bubbles in the studied alloys were quantitatively analyzed through transmission electron microscopy, and the helium content existing in bubbles were estimated from a high-pressure Equation of State. It was found that the size and population density of helium bubbles differ with different compositional complexity. The helium diffusion in such condition was dominated by the different mechanism at different temperatures. Besides, the helium bubble formation mechanism and the activation energy of helium diffusion were analyzed based on Trinkaus’s model.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume