高强耐磨变形铝青铜的热处理工艺

Heat Treatment Technology of a High-Strength Wear-Resisting Wrought Aluminium Bronze

采用正交试验方法优化了一种新型高强耐磨变形铝青铜合金的热处理工艺 ,并研究了时效温度和淬火介质对合金力学性能的影响 .试验结果表明 ,合金的最佳热处理工艺参数为 85 0℃保温 1h ,水淬 ,35 0℃时效 1h ,空冷 .时效温度对合金性能有显著影响 ,在 4 0 0℃以下 ,随时效温度的升高 ,合金的强度增大 ,而塑性无明显变化 ;在 4 0 0℃以上 ,随时效温度的升高 ,合金的强度降低 ,而塑性显著增加 .淬火介质的类型和温度影响合金的力学性能 。

The orthogonal design was adopted to optimize the heat treatment of a novel high_strength wear_resisting wrought aluminium bronze. The effects of the aging temperature and quenching mediums on the mechanical properties of the alloy were also investigated. The results show that the optimal parameters of the heat_treatment is solution treatment at 850 ℃ for 1 h and quenching to water, aging at 350 ℃ for 1 h and cooling in air. The aging temperature remarkably affects the property of the alloy. Under the temperature of 400 ℃, the strength increases and elongation has no obvious change with the raising of the aging temperature. However, the strength decreases and elongation increases obviously above 400 ℃. The category and temperature of the quenching mediums have some influence on the mechanical property of the alloy. Water with normal temperature is the available quenching medium.