Influences of low In alloying and aging on microstructure and plastic deformation behavior of Sn-58Bi solder

The SnBi eutectic solder shows high ductility at low strain rate, while plastic deformation of the Sn-rich phase in it is restrained due to the high content of the brittle Bi-rich phase and the fine interlocked lamellar structure, thus the impact toughness of the SnBi solder is poor. In this study, 1.5 wt