Paper Title:
Microstructural Signatures of Bronze Archaeological Artifacts from the Southwestern Iberian Peninsula
  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.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
597-604
DOI
10.4028/www.scientific.net/MSF.636-637.597
Citation
P. Valério, R. J. C. Silva, M.F. Araújo, A.M.M. Soares, F. M. Braz Fernandes, "Microstructural Signatures of Bronze Archaeological Artifacts from the Southwestern Iberian Peninsula", Materials Science Forum, Vols. 636-637, pp. 597-604, 2010
Online since
January 2010
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