Microstructural Signatures of Bronze Archaeological Artifacts from the Southwestern Iberian Peninsula

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Abstract

This study concerns the elemental and microstructural characterization of proto-historic bronze rings from the southwestern Iberian Peninsula. Micro-EDXRF analyses demonstrate that the artifacts are binary bronze alloys (8-13% Sn) with arsenic and lead as the major impurities. Optical microscopy and SEM-EDS allowed the identification of common inclusions (e.g. copper sulphides) and alteration processes (redeposited copper, intergranular and intragranular corrosion). Microstructures consisting of fine dendrites, coarse and/or equiaxial grains were also identified, as well as the presence of (+) eutectoid, deformed inclusions, twinned grains and/or slip bands. The combination of these characteristics allowed establishing the metallurgical procedures (casting, forging and annealing) used in the production of the bronze rings. The identification of different thermomechanical operational sequences indicates that the metallurgical knowledge was well established in the southwestern Iberian Peninsula during those ancient times.
Original languageUnknown
Title of host publicationMaterials Science Forum
Pages597-604
VolumeV 636-637
DOIs
Publication statusPublished - 1 Jan 2010
Event5th International Materials Symposium/14th Conference of the Sociedade Portuguesa de Materiais -
Duration: 1 Jan 2009 → …

Conference

Conference5th International Materials Symposium/14th Conference of the Sociedade Portuguesa de Materiais
Period1/01/09 → …

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