Effect of Ti/Al Ratio on the Elemental Partitioning in the Face-Centered Cubic-Based γ-γ′ Dual-Phase High Entropy Alloy Studied by Atom Probe Tomography

作者：Han, Bin^*; He, Feng; Xia, Linfei; Wang, Zhijun; Kai, Ji Jung

来源：Frontiers in Materials, 2022, 9: 806237.

DOI：10.3389/fmats.2022.806237

• high entropy alloy
• gamma ' nanoparticles
• elemental partitioning
• atom probe tomography
• Ti/Al ratio

The effect of Ti/Al ratio on the elemental partitioning in the Ni2CoFeCrTixAly high entropy alloy was studied by atom probe tomography (APT). The APT results indicate that the gamma ' nanoparticles have a composition of (NiCoFeCr)(3)TiAl which is independent of Ti/Al ratio. The effect of Ti/Al ratio on the partitioning behaviors of Fe and Cr are significantly different from that of Co. The decreasing of Ti/Al ratio significantly enhanced the incorporation of Fe and Cr into the gamma' nanoparticles. However, the concentration of Co in the gamma' nanoparticles declined with the decrease of Ti/Al ratio.

• 单位
  陕西科技大学; 西北工业大学