中间退火工艺对双零铝箔坯料组织与性能的影响

Effect of the intermediate annealing process on microstructure and mechanical properties of the double-zero aluminum foil blank

试验研究不同中间退火工艺条件下铸轧铝箔坯料组织、性能的变化,并对断口形貌进行分析。结果表明,随退火温度升高、时间延长其坯料晶粒逐渐长大,在370℃保温6 h的退火工艺制度最佳,有利于后续轧制工艺进行;断口分析表明在370℃6 h退火条件下纵向断裂为正拉伸与剪切的复合断裂。

Microstructure,performance and fracture morphology were studied for cast-roll- ing aluminum foil blanks under different intermediate annealing processes. The results show that with the increase of annealing temperature and time, the blank grains grow bigger. The optimal annealing process system is 370℃ 6 h, conducive to subsequent rolling processes. The analysis of fracture morphology shows that longitudinal fracture combines tensile and shear fractures when the blank is annealed at 370℃ for 6 h.