PUBLICATION: Effects of Adiabatic Heating and Strain Rate on the Dynamic Response of a CoCrFeMnNi High-Entropy Alloy

Our latest article brings new insight into the dynamic response and microstructural development in High Entropy Alloys.

https://link.springer.com/article/10.1007%2Fs40870-019-00215-w

This article presents the mechanical behavior of a Cantor alloy at wide range of strain rates. The tests were analyzed also with high speed infrared camera. This allows calculations of the Taylor-Quinney factor of the material as a function of plastic strain at different strain rates. It is quite obvious that the Taylor-Quinney factor is a strong function of both strain rate and the amount of plastic strain, and therefore, accurate modeling of the material behavior requires more careful analysis of the adiabatic heating than a conventionally used constant value of 0.9. In this article we also present EBSD results focusing on the texture and microstructure development of the alloy at different strain rates. The work is part of the PhD thesis of M.Sc. Guilherme Soares.