|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||Effect of Pre-strain on the Aging Response of Non-equimolar AlCoCrFeNiTi High Entropy Alloy
||Vickey Nandal, R Sarvesha, Sudhanshu Shekhar Singh, Jayant Jain, Suresh Neelakantan
|On-Site Speaker (Planned)
High entropy alloys (HEAs), have attracted considerable attention of materials scientists in the past decade due to their excellent properties such as wear resistance, high temperature strength, thermal stability and potential applications in aerospace industries. In the present work, the aging response of the Al0.2Co1.5CrFeNi1.5Ti0.3 HEA with and without pre-strain has been studied. Microstructural examination reveals two distinct morphologies (cellular and spherical) of γ′ precipitate in both the cases. It has been observed that the amount of pre-strain has a strong influence on the fraction of these precipitate morphologies. In addition, the pre-strained HEA attains the peak aged condition at a much shorter aging time, as well an increase in the hardness values have been observed. The observed differences in the microstructural and hardness values, due to pre-strain, can be attributed to the differences in the kinetics of precipitation and their characteristics.