EFFECT OF LOCAL STRAIN AND GND DENSITY ON CRACK INITIATION IN ALLOY 600.

Naganand Saravanan, Phani S. Karamched, Morgane Le Faucheur, Emilien Burger, Fabio Scenini, Sergio Lozano-Perez

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

In this work, strain and geometric necessary dislocation (GNDs) have been measured around various grain boundaries after subjected to a 4-point bend test in simulated PWR primary water conditions, with the aim of clarifying which local conditions trigger SCC initiation. Three different regions are compared: in a cracked grain boundary, the cracked and the uncracked portions are compared to a similar grain boundary in the as-received material. l. To study this, “on-axis” Transmission Kikuchi Diffraction (TKD) with a step size of 1 nm followed by GND analysis and cross-correlation based strain mapping, was performed. Results together with a discussion on the limitations of the approach will be presented.
Original languageEnglish
Title of host publication19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems- Water Reactor conference
Publication statusAccepted/In press - 1 Jul 2019
Event19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors - Boston, United States
Duration: 18 Aug 201922 Aug 2019
http://envdeg.ans.org/

Conference

Conference19th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors
Country/TerritoryUnited States
CityBoston
Period18/08/1922/08/19
Internet address

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