Preparation and Microstructure Analysis of Continuous Unidirectional Solidification Cu–P–Sn Alloy

Cu–10% P–6% Sn alloy rods with columnar crystal structure were synthesized in this study utilizing Cu–10% P–6% Sn alloy as the starting material. Continuous directional solidification was used to produce Cu–10% P–6% Sn (mass percentage) alloy rods with a diameter of 8 mm, and the heat treatment procedure was arried out under the condition of cast alloy. Optical microscopy and field emission scanning microscopy were then used to investigate the microstructure of the cast alloy. The impact of heat treatment on microstructure evolution was also investigated. The microstructure of a Cu–10% P–6% Sn alloy produced by continuous directed solidification had a Cu-rich dendritic structure, and the second phase structure was linear or spherical, according to the findings.