A Study on the Manufacturing Techniques of Bronze Objects from Tepee Foroodgah and Sangtarashan Ancient sites of Khorramabad, Luristan

In recent years, two significant historical sites, Tepe Forodgah and Sangtarashan have been excavated in Khorramabad. Bronze objects explored from both sites exhibit an interesting feature of metal production in terms of shapes and techniques used. Tepe Forodgah was excavated in 2014 and Sangtarashan was excavated during six seasons since 2003. Tepe Forodgah yielded few bronze objects but a large number of bronze objects were obtained from Sangtarashan. In this research, two bronze objects were selected from each historical site and results of the analysis were analyzed and compared concerning their chronological orders. In this research, type of alloy, manufacturing technique, elements and chemical compounds of samples were studied by Scanning Electron Microscopy equipped with Elemental Analysis, Metallography, Computed Tomography and X-Ray Radiography. According to the results, the alloy used in all the objects was known to be bronze and based on the microstructure of the objects, hammering and annealing used in manufacturing technique.