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Non-Linear Ultrasonic Testing and Microstructural-based Modeling towards the Development of Prognostic Damage Maps for Reactor Structural Materials


EMSL Project ID
49696

Abstract

We suggest using atom-probe tomography (APT) to study the cluster size and density distribution of Cu clusters in Fe-1Cu alloys after thermal ageing. Transmission Electron Microscopy (TEM) will be used to investigate the dislocation density in compressed and non-compressed specimens. The data from APT and TEM characterizations will be compared to non-linear ultrasound (NLU) to test its capability for non-destructive microstructural evaluation. Nano-clusters and precipitates of only a few nanometers diameter can significantly alter macroscopic mechanical properties. APT is the only technique that can reliably make such small clusters visible.

Project Details

Start Date
2016-12-16
End Date
2017-09-30
Status
Closed

Team

Principal Investigator

Karen Kruska
Institution
Pacific Northwest National Laboratory

Co-Investigator(s)

Charles Henager
Institution
Pacific Northwest National Laboratory

Team Members

Shenyang Hu
Institution
Pacific Northwest National Laboratory