ZL107合金热力学显微组织分析

应用热力学计算对平衡条件下ZL107合金组织进行了定量分析,研究了化学成分和温度对ZL107合金组织的影响规律,并对该合金的显微组织进行了观察。结果表明,ZL107合金中Al2Cu强化析出相开始析出温度及数量主要取决于Cu含量,增加Cu含量可以提高Al2Cu相数量及析出温度。在210℃以上时效会导致Al2Cu相数量下降。热力学计算确定的最佳固溶温度和时效温度分别在510～520℃和150～200℃之间,热力学计算结果和试验结果相符。

Analysis of Microstructures of ZL107 Alloy by Thermodynamics Calculation

Quantitative analysis of the microstructures of the ZL107 alloy under equilibrium conditions was performed using thermodynamic calculations. The effects of chemical composition and temperature on the microstructures of the alloy were investigated, and the microstructures of the alloy were also observed. The results show that the precipitating temperature and amounts of Al2Cu are controlled by Cu content, where the Al2Cu phase and precipitated temperature are increased with increasing in Cu content. However, the amounts of Al2Cu are decreased with the aging temperature higher than 210 ℃, and the optimized solid solution temperature and aging temperature are in range of 510~520 ℃ and of 150~200 ℃, respectively, through the thermodynamic calculation, which are well in agreement with experimental ones.