The formation of low surface energy hybrid organic-inorganic micro-nanostructured zinc stearate electrodeposit transformed the anodic aluminum oxide (AAO) surface to superhydrophobic, having a water contact angle of 160 ̋. The corrosion current densities of the anodized and aluminum alloy surfaces are found to be 200 and 400 nA/cm2, respectively. In comparison, superhydrophobic anodic aluminum o...

The paper presents several experimental results regarding the influence of various procedures applied to incorporate Ce species in hydrotalcite–type chemical conver­sion coatings on overall corrosion performance for AA 7075 aluminum alloy as a metallic substrate. Two routes were envisaged: (i) incorporation by immersion cerium nitrate solutions and (ii) electrochemical deposition hydro­phobic -...

The effect of ultrasonic shot peening on the environmental hydrogen embrittlement behavior 7075-T6 aluminum alloy is investigated. tensile specimens were treated by for 50 s. Surface residual stress and depth under surface evaluated using an X-ray diffractometer. Then, tested in humid air dry nitrogen gas slow strain rate technique. results showed that shot-peened specimen has a superior resist...

In this study, the plastic anisotropy distribution of an extruded 7075 aluminum alloy thick plate was evaluated through small-cube compression tests. The with a thickness 15 mm divided into five layers in order to verify difference along direction plate. Small-cube specimens side length 1 were extracted from each layer and subjected tests evaluate directional r-values material. applied Hill’s q...

Airframe structural components experience coupled load–environment spectra that are currently not captured in traditional damage-tolerant management approaches. The effect of incorporating fatigue crack growth kinetics relevant to high-altitude flight environments into LEFM-based predictions progression for aluminum alloy 7075-T651 was quantitatively assessed a variety using AFGROW. results thi...

The paper studies the effect of strain-loading sequence on fatigue lifetime and fracture surface topographies in 7075-T651 aluminum alloy specimens. Fatigue tests were performed two ways: (i) constant-amplitude loading (ii) series variable amplitude with non-zero mean strain values. topography fractures was measured over their entire surfaces help an optical confocal measurement system. results...