Material property control of CuSn alloy using wire and arc additive manufacturing (Translated)

Abstract

In the wire and arc additive manufacturing technology, which involves melting and depositing metal wire materials by arc discharge, it is possible to use a wide variety of wire materials and change the composition locally. However, CuSn alloys with a high Sn content have poor ductility and are difficult to process into wires. In this study, we propose an accumulation method in which Sn wire is fed from the outside to the molten pool during the deposition process using a CuSn alloy wire with a low Sn content. This study investigated the relationship between wire feed rate and actual Sn content rate. Tensile and acoustic tests were conducted. Sn content of the additively manufactured materials was changed by varying the Sn wire feed rate. It was verified that Sn content influences the mechanical and acoustic characteristics of CuSn alloys.