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Study of Pieces of the Ensenada de Barragán Fort Historical Museum by Non-destructive Testing

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The Barragán Fort was built in 1731, at the time of the Spanish Viceroyalty of the Río de La Plata. The Ensenada de Barragán was a defense site against various invasion attempts by Portuguese, English and Anglo-French forces between 1730 and 1847. Cannonballs and bayonets found at the site have been analyzed by non-destructive metallography, X-ray fluorescence and Brinell hardness, to preserve the integrity of the historical pieces. The studies have revealed that the surface microstructure of cannonballs corresponds to a white cast iron, with Brinell hardness between 450 and 480 HB. The bayonets presented a ferritic structure, with recrystallized grains and oriented silicate-type inclusions. Hardness values were between 100 and 130 HB. It is presumed that the bayonets were made by the direct reduction method and later hot worked by hammering.

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Correspondence to R. W. Gregorutti.

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This invited article is part of a special topical issue of the journal Metallography, Microstructure, and Analysis on Archaeometallurgy. The issue was organized by Dr. Patricia Carrizo, National Technological University – Mendoza Regional, and Dr. Omid Oudbashi, Art University of Isfahan and The Metropolitan Museum of Art, on behalf of the ASM International Archaeometallurgy Committee.

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Ringuelet, T., Pérez Galetta, I., Rossi, M. et al. Study of Pieces of the Ensenada de Barragán Fort Historical Museum by Non-destructive Testing. Metallogr. Microstruct. Anal. 12, 306–311 (2023).

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