[3D03-08] Irradiation Effect

[3D04] Atom probe tomography analysis of anisotropic distribution of solute elements (Mn, Ni)on irradiated Fe - based model alloy

*Ba Vu Chinh Nguyen¹, Kenta Murakami^2,1, Liang Chen³, Phongsakorn Prak Tom¹ (1. Nagaoka University of Technology, 2. The University of Tokyo, 3. Shianghai Jiao Tong University)

Keywords:ion irradiation, atom probe tomography, orientation calculation, solute elements, dislocation loop decoration

In this study, the atom probe tomography (ATP) has been performed on Fe-1.4Mn0.6Ni (at%) model alloy after irradiated by 2.8 MeV Fe ions at 400 ⁰C. Geometrical calculations were applied to the three-dimensional structure of the specimen to study the anisotropic distribution of solute elements (Mn, Ni). Results show that Mn and Ni solute atoms are distributed close to some certain planes, namely <111> and <100> families. This arrangement of solute atoms on the habit planes of interstitial loop may be considered as proof that the interstitial loops can trap solute elements during irradiation process.