Surface metal matrix composites offer an excellent solution for applications where surface properties play a crucial role in components’ performance and durability, such as greater corrosion resistance, better wear high formability. Solid-state processing techniques, friction surfacing stir welding/processing, several advantages over conventional liquid-phase methods. This research investigated...

The work aims to study the change rule of surface properties aluminum (Al) alloy after shot peening (SP), and obtain corresponding relationship between material characteristics SP parameters. Firstly, Finite Element Model (FEM) multi-projectile impact Al specimen was established by ANSYS/LS-DYNA (Version: Ansys15.0). Box-Benhnken design method (BBD) used 3-level 3-factor experiment with pressur...

entropy as a measure of uncertainty was used to represent the results of the wavelet technique in electrochemical noise analysis. the experimental signals were obtained by recording the electrochemical potential and current noise of 7075 aluminum alloy in 3.5% nacl solution. the electrochemical potential and current noise were decomposed into 16 levels using daubechies wavelets. wavelet output ...

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...

Composite material is a combination of two or more materials having compositional variations and depicting properties distinctively different from those of the individual materials of the composite. A composite mixture having more than one fiber is known as hybrid composite During the past decade, considerable research effort has been directed towards the development of in situ Metal Matrices h...

The influence of a minor strontium (Sr) modifier on the microstructures and mechanical properties of 7075 Al alloys was investigated in this paper. The grain size of cast 7075 Al alloys was refined from 157 μm to 115 μm, 108 μm, and 105 μm after adding 0.05 wt. %, 0.1 wt. %, and 0.2 wt. % Sr, respectively. The extruded 7075 Al alloys was refined with different degrees of Sr modifier. The mechan...