✍ Scribed by Nguyen Q. Chinh; Tamás Csanádi; Jenő Gubicza; Terence G. Langdon
No coin nor oath required. For personal study only.
The plastic behavior of four pure face-centered-cubic (fcc) metals (Al, Au, Cu and Ni) was studied at room temperature up to a strain value of $8 achieved by severe plastic deformation. It is shown that at high strains the saturation flow stress and the total dislocation density can be scaled with the melting point, and the deformation process can be regarded as steady-state flow leading to a uniform description of the plastic behavior of these fcc metals at all temperatures. The results suggest that the plastic flow at room temperature of fcc metals processed by severe deformation is primarily attributable to diffusion-controlled and thermally activated processes due to the high concentration of deformation-induced vacancies.
📜 SIMILAR VOLUMES
The room temperature macroscopic and microscopic plastic behavior of four face-centered cubic metals (Al, Au, Cu and Ni) is investigated experimentally over a wide strain range, and theoretical modeling is used to simulate the established major micromechanisms describing the evolution of mobile and
## It is shown that the available data on the diffusion coefficients of substitutional solutes B in dilute face-centered cubic solutions in A can be described approximately by the equation: &A UA -UB -GAB AP'B -APA = 4 VA -' AF'B and AF'A are the free energies of activation for solute and solvent