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Vol.9 No.2previous AASP17(125-126-127-128-129-130-131-132-133-134-135-136-137-138-139-140-141-142) NT85

Academic Articles
Regular Paper Vol.9 No.2 (2017) p.33 - p.37

Training for a wider application of atom probe tomography in reactor ageing management

Dongyue CHEN 1,*, Kenta MURAKAMI2, Zhengcao LI3, *, Naoto SEKIMURA1

1 The University of Tokyo, Dept. of Nuclear Engineering and Management, Japan
2 The University of Tokyo, Nuclear Professional School, School of Engineering, Japan
3 Tsinghua University, School of Materials Science and Engineering, China

With the higher safety requirements and the rising public concern of reactor safety, ageing management of nuclear power plants are facing new challenges in recent years. Multiscale modeling is the tool for ageing prediction during and beyond reactor design lifetime. It is important to update the latest predictions to existing licensed reactors continuously, however, experimental data at microscopic scale is lacking for the validation and calibration of modeling results. Atom probe tomography (APT) is a new and powerful analyzing tool with near-atomic resolution. It is good at studying issues like second-phase precipitation and grain boundary cracking, and its 3D atom map is highly suitable for the comparison with modeling. APT is promising for future reactor ageing management and maintainology, but only a small fraction of researchers can utilize the new technique currently. In this work, training for potential APT users is proposed and designed, so that more researchers could benefit from APT technique in the future. The advantages and the basic mechanisms of APT are introduced. The possible errors that are most important to APT users and modeling researchers are explained. A practice section is also designed, which enables the participants to experience the visualization of atom maps and the tuning of precipitate definition. The concept, structure and experience of this training could be a good starting point for the design and organization of better APT training in the future.
Ageing management, atom probe tomography, training
Full Paper: PDF
Article Information
Article history:
Received 12 October 2016
Accepted 29 May 2017