通过对Ag-4Pd键合合金线冷加工和热处理过程中的微观组织与性能进行研究，分析了冷变形加工率和热处理温度对Ag-4Pd键合合金线力学性能、组织结构和熔断电流的影响。研究结果表明：Ag-4Pd键合合金线随冷加工率增长，强度增加，伸长率降低，滑移和孪生变形为主要形变类型;随着热处理温度的增加，?0.050 mm Ag-4Pd键合合金线拉断力下降，伸长率增加，525 ℃热处理时，Ag-4Pd键合合金线具有优秀的力学性能;进一步增加热处理温度，Ag-4Pd键合合金线出现孪晶组织，且孪生形核及亚晶吞并长大形核为主要形核方式;热处理过程中施加在线材上的拉紧力过大，导致Ag-4Pd键合合金线表面呈凹凸不平的微小竹节状;经试验数据拟合，Ag-4Pd键合合金线电阻值随热处理温度升高而降低，其熔断电流与熔断时间之间存在指数函数关系，Ag-4Pd键合合金线熔断电流与弧长之间存多项式函数关系。

：The micro-structure and properties of Ag-4Pd alloy bonding wire after drawing and heat treatment are investigated,and effects of drawing rate and heat treatment temperature on mechanical properties,structure and fusing current of Ag-4Pd alloy bonding are are analyzed. The results show that the strength of Ag-4Pd alloy bonding wire will increase,and the elongation will decrease when drawing rate increased,the main deformation type are flip and twin. For? 0.050 mmAg-Pd alloy bonding wire,the broken load decreases and elongation increases when heat treatment temperature increases,the mechanical properties are excellent after heat treatment at 525 ℃. When increase heat treatment temperature more,the twin crystal is found in Ag-4Pd alloy bonding wire,and twin nucleation and subgrain grows are the main nucleation. The micro bamboo defects on surface are found after heat treatment with excessive tensile load. The electrical resistance of Ag-4Pd alloy bonding wire decreases after heat treatment. After data fitting,Ag-4Pd alloy bonding wire fusing current and fusing time is exponential function,and fusing current and loop is cubic polynomial function.