2016 Annual Meeting

Presentation information

Oral Presentation

IV. Nuclear Fuel Cycle and Nuclear Materials » 402-1. Nuclear Materials and the Irradiation Behavior

[2H08-10] Stainless Steels

Sun. Mar 27, 2016 11:15 AM - 12:00 PM Room H (Lecture Rooms B B204)

Chair: Hiroaki Abe (Univ. of Tokyo)

11:45 AM - 12:00 PM

[2H10] A first principle study on the composition deviation of Ni-Si precipitates formed in irradiated stainless steel

*Dongyue CHEN1, Kenta MURAKAMI2, Naoto SEKIMURA1 (1.The University of Tokyo, Department of Nuclear Engineering and Management, School of Engineering, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8656, Japan, 2.The University of Tokyo, Nuclear Professional School, School of Engineering, 2-22 Shirakata-Shirane, Tokai-mura, Ibaraki 319-1188, Japan)

Keywords:Stainless steel, Ni-Si precipitates, First principle calculation

The composition of Ni-Si precipitates formed in irradiated stainless steel was previously found to be deviated from the standard γ’ phase stoichiometry by atom probe. Here a first principle calculation is attempted to explain this composition deviation by considering the possible defects in the γ’ phase.