In this paper, we studied the oxidation behavior in AA7075 containing TiB2 nanoparticles. The results indicate that nanoparticles play distinctive roles during coupled processes. At a lower temperature, ruptures Al2O3 film and refine microstructure morphology. Above solutionizing point, Zn proceeds deeply into matrix, partially block diffusion path to increase gradient. TiB2-regulated is respon...

In this paper the capability of Gurson-Tvergaard-Needleman (GTN) model in the prediction of ductile damage in 7075-T651 aluminum alloy is investigated. For this purpose, three types of specimens were tested: Standard tensile bars, Round notched bar (RNB) specimens and compact tension (C(T)) specimens. Standard tensile bar tests were used to obtain the mechanical properties of the material and t...

This paper presents a stochastic model of fatigue-induced crack propagation in metallic materials. The crack growth rate predicted by the model is guaranteed to be non-negative. The model structure is built upon the underlying principle of Karhunen±Lo eve expansion and does not require solutions of stochastic di€erential equations in either Wiener integral or Itô integral setting. As such this ...