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采用电阻炉对爆炸焊接钛-铝复合板进行退火处理,利用万能材料试验机、SEM、EDS和XRD研究了退火工艺对爆炸焊接钛铝复合板组织与性能的影响。结果表明,在400℃退火时,保温时间3~10 h对钛-铝复合板界面的剪切强度的影响不大;当退火温度≥450℃时,随着保温时间的延长,复合板的剪切强度开始逐渐上升,到达一峰值后,随着保温时间的继续延长,界面剪切强度开始下降。爆炸焊接钛-铝复合板在450℃、保温时间≥10 h和490℃、保温时间≥3 h退火处理时,界面结合区有中间化合物Al3Ti生成。爆炸焊接钛-铝复合板合适的退火工艺选为450℃保温3 h。
The effects of annealing process on the microstructure and properties of the titanium-aluminum composite plate with explosive welding were studied by means of universal testing machine, SEM, EDS and XRD. The results show that when annealed at 400 ℃, the holding time of 3 ~ 10 h has little effect on the shear strength of the interface of the Ti-Al composite plate. When the annealing temperature is more than 450 ℃, with the prolongation of holding time, Tensile strength began to rise gradually, reaching a peak, with the holding time continues to extend, the interface shear strength began to decline. The explosive welding titanium-aluminum composite plate at 450 ℃, holding time ≥ 10 h and 490 ℃, holding time ≥ 3 h annealing treatment, the interface junction with the intermediate compound Al3Ti generation. Explosive welding titanium - aluminum composite board suitable annealing process selected as 450 ℃ insulation 3 h.