|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||Uncovering Micro Mechanisms during Tensile Deformation for an Outstanding High Entropy Alloy via In Situ Neutron Diffraction
||Biao Cai, Bin Liu, Yiqiang Wang, Kun Yan, Saurabh Kabra, Peter Lee, Yong Liu
|On-Site Speaker (Planned)
Recently, high entropy alloy (HEA) concept has been studied as a means of achieving excellent properties of metallic alloys. We have developed an FeCoCrNiMo0.2 HEA alloy through powder metallurgy, which possesses a good combination of high strength and ductility. However, currently the knowledge at the microstructural scale concerning the underpinning micro mechanisms during deformation are limited, especially with respect to the interaction between local strain hardening and grain defects (e.g. dislocation substructures and twins). In order to determine these, we used neutron diffraction to quantify the evolution of the lattice strain in situ during tensile deformation at both ambient and reduced temperatures. The results in concert with ex situ electron microscopic characterizations provided a pathway for designing HEAs with enhanced strength and superior ductility.
||Planned: Supplemental Proceedings volume