Microstructure and Hardness of Cu-22Sn-xC Alloys Fabricated by Powder Metallurgy

Microstructure and Hardness of cu-22sn-xc alloys fabricated by Powder MetallurgyCu-Sn alloys have been known as bronze since ancient times and widely used as electrode materials, ornaments, tableware and musical instruments.Cu-22Sn alloy fabrication by hot forging process is a Korean traditional forged high-tin bronze.The tin content is 22 percent, which is more than twice that of bronze ware traditionally used in China and the west.Copper and tin have a carbon solubility of several ppm at room temperature, making Cu-Sn-C alloys difficult to manufacture by conventional casting methods.research on the production of carbon-added copper alloys has used a manufacturing method that is different from the conventional casting method.in this study, Cu-22Sn-xC alloy was fabricated by mechanical alloying and spark plasma sintering.The carbon solubility was confirmed in Cu-Sn alloy through mechanical alloying.The lattice parameter increased from a0 to C2, and then decreased from C4.The microstructural characteristics of sintered alloys were determined using X-ray diffraction and microscopic analysis.as a result of comparing the hardness of Cu-22Sn alloys manufactured by conventional rolling, casting, and forging and Cu-22Sn-xC alloy by sintered powder metallugy, b0 sintered alloy was the highest at about 110.9 hrb.