Microstructural Characterization and Mechanical Properties of Iron Reinforcements in Buildings from the Medieval and Modern Periods in France
Maxime L’Héritier|Ivan Guillot|Philippe Dillmann
This article presents an overview of the metallographic structures observed on iron reinforcements more than 20 buildings from medieval and modern period in France, which are representative evolution ironmaking techniques at that time (330 samples). Metallographic examinations show a great diversity structures, even same sample: pure ferritic to low pearlitic steel, presence phosphorus solid solution (locally up 0.5%wt), numerous slag inclusions various sizes, porosities.Tensile tests were performed set samples 4 (46 The results accordance with observations: mechanical behaviors very heterogeneous, taken artefact. Failure happened values as yield stress 25% plastic strain. These probably worked elastic domain (<150 Mpa). properties significantly beyond those carbon steels question exact role stability monuments.
International Journal of Architectural Heritage