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双级时效对AA7075合金的积极意义是,一方面可以获得更大的塑性,另一方面屈服强度及抗拉强度的下降又不会大于6%。采用双级时效处理AA7075合金,达到峰值硬度的时间大大缩短,从而可节省能源、提高生产率、减少污染排放物。
The positive effect of the two-stage aging on the AA7075 alloy is that on the one hand greater plasticity can be achieved and on the other hand the yield strength and tensile strength will not decrease by more than 6%. AA7075 alloy with two-stage aging treatment greatly shortens peak hardness, saving energy, increasing productivity and reducing pollutant emissions.