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. 2017 Nov 15;7:15629. doi: 10.1038/s41598-017-15771-1

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Backscattered electron survey image of recovered sample S1234. The white regions around the margins are SS304. The dendritic region occupying the sample chamber is CuAl₅ alloy. Black regions are voids where material was lost during sample preparation. ROI 1, shown by the red box, is enlarged in Figs 3b and 4. ROI 2, shown by the green box, is enlarged in Figs 3a and 5. The area along the side-wall highlighted by the blue box is enlarged in Fig. 3c. The inset shows a schematic (to scale; 5 mm scale bar shown) of the entire recovery chamber and flyer plate.