|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||P34: Toughness Enhancing Deformation Mechanisms in the CoCrNi Family of MPEAs
||John A. Copley, Francisco Coury, Jonah Klemm-Toole, Jinling Gao, Yaofeng Guo, Kester Clarke, Benjamin Ellyson, Chandler Gus Becker, Brian Milligan, Christopher Frinfrock, Chloe Johnson, Niranjan Parab, Kamel Fezzaa, Tao Sun, Wayne Chen, Amy Clarke
|On-Site Speaker (Planned)
||John A. Copley
Multi-Principal Element Alloys (MPEAs), which have evolved from studies of High Entropy Alloys (HEAs), are a new and promising class of materials that have potential in structural applications. Some MPEAs, especially those from the CoCrNi family, have shown promise as high toughness materials, even at cryogenic temperatures. These MPEAs gain their high toughness from deformation mechanisms such as transformation and twinning induced plasticity (TRIP and TWIP respectively), which increase work hardening and consequently, toughness. Studies of the deformation behavior of CoCrNi MPEAs may enable the design of high toughness structural alloys. As the compositional landscape for MPEAs is vast, high-throughput methods for determining the TRIP/TWIP viability of alloys are required. This requires a better understanding of the alloying, strain rate and thermal effects on TRIP/TWIP behavior. To this end, a series of CoCrNi alloys were prepared and tested under various conditions to examine these effects on the deformation mechanisms exhibited.