Decommissioning of TEXTOR: properties of the Inconel liner. (4th March 2020)

• Record Type: Journal Article
• Authors: Fortuna-Zalesna, E; Zielinski, W; Plocinski, T; Weckmann, A; Kreter, A; Brezinsek, S; Bazarnik, P; Rubel, M
• Is Part Of: Physica scripta. Volume T171(2020:Jan.)
• Publication Date: 2020-03-04
• Subjects: TEXTOR -- inconel -- erosion-deposition; Physics -- Periodicals; 530.05
• DOI: 10.1088/1402-4896/ab4b8d
• Languages: English
• ISSNs: 0031-8949

Abstract

Abstract: The final shut-down of Tokamak Experiment for Technology Oriented Research in year 2013 created unique opportunities for multi-directional studies of in-vessel components. A set of specimens from the Inconel liner parts was collected in order to assess material properties after 26 years of exploitation. The metal surfaces were covered with up to several μ m thick co-deposits rich in boron, carbon and silicon. Detailed examination of the co-deposits and near-surface structure of Inconel performed with Transmission Electron Microscopy (TEM) revealed: (i) stratified character of the deposits; (ii) a ∼200 nm thick layer identified as NiSi2 phase at the interface between the deposit and Inconel substrate; (iii) changed Inconel surface layer. TEM studies of the Inconel structure revealed its polycrystalline character with a mean grain size, low dislocation density and a significant number of heterogeneously distributed primary carbides.