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对多元磷青铜合金进行不同程度的冷变形,绘制出合金的加工硬化曲线。通过对不同温度退火后试样的抗拉强度、硬度、伸长率及导电率进行测试和组织观察,确定合金的再结晶温度。结果表明,经冷塑形变形后,Cu-Sn-P-Fe-Ni合金呈现出典型的加工硬化特性。随着加工率的增加,合金的抗拉强度呈先增大后趋于稳定的趋势,而断后伸长率和电导率呈相反变化规律。在相同的退火时间下,随着退火温度的增加,Cu-Sn-P-Fe-Ni合金的强度呈先缓慢减小,再剧减,最后趋于稳定的变化规律;为节约效能缩短时间,确定Cu-Sn-P-Fe-Ni合金经80%变形后的再结晶退火制度为440℃×5 h。
On the phosphorus phosphor bronze alloy to varying degrees of cold deformation, draw the alloy work hardening curve. After annealing at different temperatures, the tensile strength, hardness, elongation and electrical conductivity of the samples were tested and the microstructure was observed to determine the recrystallization temperature of the alloy. The results show that the Cu-Sn-P-Fe-Ni alloy exhibits typical work-hardening properties after cold-formed deformation. With the increase of the processing rate, the tensile strength of the alloy first increases and then tends to be stable, while the elongation and conductivity change in the opposite direction. At the same annealing time, the strength of Cu-Sn-P-Fe-Ni alloy decreases slowly and then drastically decreases with the increase of annealing temperature. Finally, the strength of Cu-Sn-P-Fe- The recrystallization annealing of Cu-Sn-P-Fe-Ni alloy after 80% deformation was confirmed as 440 ℃ × 5 h.