|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||High Entropy Alloys IV
||Alloying Effects on the Microstructures and Mechanical Properties of Compositionally Complex Alloys
||Zhenggang Wu, Hongbin Bei
|On-Site Speaker (Planned)
To seek further improvement of its mechanical or other properties of the equiatomic compositionally complex alloy, we use the FeNiCoCrMn alloy as a base alloy to modify it compositions by changing the amounts of these elements or adding new elements. The alloying effects on phase constituents were investigated by X-ray diffraction and metallography. The microstructures of selected single-phase alloys with a FCC structure was controlled by thermal mechanical processing. Tensile tests showed the mechanical properties can be further improved with compared to the equiatomic FeNiCoMnCr high entropy alloy. For example, with addition of 0.5 at.% C, both strain hardening rate and strength are enhanced while high uniform elongations to fracture (∼ 70% at 77 K and ∼40% at 293 K) are still maintained. The increased strain hardening and strength could be caused by the promptness of deformation twinning in C-containing high entropy alloys.
||Planned: A print-only volume