7075-T6鋁合金以17000~23000A/cm2電流密度通直流電，並以4N純鋁作為無析出物的對照組，通17000~30000A/cm2電流密度的直流電，通電之後以拉伸試驗以及微硬度試驗觀察電流對上述兩種鋁合金的機械性質影響。
7075-T6鋁合金在經過1循環、通電1-30 min的通電實驗後，機械強度以及韌性普遍隨通電時間和電流密度增加而微幅下降；而微硬度卻在通電後有所提升，23000A/cm2電流密度通電後試片的微硬度最高有5-7%的強化；微拉伸機械性質的下降源自於通電後晶粒隨通電時間增加而成長，通電對於7075-T6的析出強化相無顯著影響，進行多循環的通電也無法強化它。
4N純鋁經過各電流密度通電，降伏強度與楊氏係數皆有60%上的強化，在某些條件下，分別可以達到接近120%與130%的強化。伸長率也有所提升，進而提升韌性；但極限抗拉強度則微幅下降。純鋁的多循環通電雖增加總通電時間，但並不能再進一步強化其機械性質。純鋁在通電之後機械性質獲得強化，但其為組織變化，例如晶粒細化，不能完全解釋降伏強度和楊氏係數的強化；理論計算所得結果也於實驗結果不同，故目前對於降伏應力和楊氏係數顯著提升的現象沒有明確的解釋。

7075-T6 Aluminum alloys were subjected to direct electric current stressing at current densities of 17000~23000A/cm2 for duration times(td) ranging from 1 to 30 min while being fan-cooled. Micro Tensile Test (MTT) was used as the primary method to obtain the mechanical properties of the specimens after being stressed with current. All mechanical properties, except for micro hardness obtained from the Vickers microhardness test, showed a slight decrease after being stressed with current. However, the micro hardness increased up to 7.25% after 5 minutes of current stressing at 23000A/cm2. As current densities and td were raised, the degree of grain growth was also increased. The High Angle Annular Dark-Field (HAADF) analysis revealed that the nano precipitates, which are considered to be the primary strengthening factor in 7075-T6 alloys, were not affected by current stressing. Cyclic current stressing at 17000, 20000, and 23000A/cm2 for 1 min showed similar results. Non-precipitated 4N aluminum was used as a control group in experiments which were similar to those conducted on 7075-T6, but with the addition of an extra current density, 30000A/cm2. After current stressing, pure aluminum exhibited a markedly different response. The yield stress (YS) and Young's modulus (E) of the specimens increased by up to about 120%, while a minor strengthening observed in elongation (EL) and microhardness. The toughness of the current-stressed specimens also increased, although slight decrease was noted in the ultimate tensile strength (UTS) of the samples. Despite a certain degree of grain refinement, there was still insufficient evidence of such significant increases in YS and E. Cyclic current stressing pure aluminum at 17000, 20000, 23000 and 30000A/cm2 for 1 min resulted in similar behavior as 1 cycle current stressing.

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