According to the type of alloy strengthening, it can be divided into solid solution type, precipitation type, and precipitation type. From the perspective of material design principles, lead frame materials are almost all precipitation-strengthened alloys. They are designed using a variety of strengthening methods, mainly including deformation strengthening and solid solution strengthening. (Alloying strengthening), grain refinement strengthening, precipitation strengthening, adding an appropriate amount of rare earth elements can increase the conductivity of the material by 1.5-3% IACS, effectively refine the grains, increase the strength of the material, and improve the toughness. Little effect on conductivity. Conduct research on the combination of work hardening and solid solution hardening, solid solution-age hardening and composite strengthening to improve material properties.
