The extremely altered topmost surface layer, known as the white formed in a medium-carbon low-alloy steel result of impacts by angular 10–12 mm granite particles during slurry erosion process is comprehensively investigated. For this purpose, characteristics, morphology, and formation mechanism layer are described based on microstructural observations using optical, scanning transmission electr...

Wire arc additive manufacturing achieves high efficiency and low costs by using a melting wire for directional depositions. Thermal analyses the finite element method have been applied to predict residual stress deformation of fabricated parts. For Ni-based alloy production, predicting solidification microstructure evolution with segregation is needed in order design precise heat treatment proc...

the most costly operation in the oil exploration is the well network drilling. one of the most effectiveways to reduce the cost of drilling networks is decreasing the number of the required wells byselecting the optimum situation of the rig placement. in this paper, balas algorithm is used as a modelfor optimizing the cost function in oil well network, where the vertical and directional drillin...

This work shows the atomic scale deformation behavior of crystalline multilayer coating comprising up to five Cr and Ni layers. A molecular dynamics simulation was conducted visualize during indentation/unloading scratch. Normal shear directional forces were recorded compare repulsion friction between models scratch simulations. Dislocation lines within layers quantified understand each model. ...

Abstract Sheet metal formed parts are often produced in multistage processes. The multi-directional deformations that occur this process pose a challenge for sufficiently accurate modeling of the material behavior. In paper, we present an experimental methodology and its potential serves as basis comprehensive validation models with respect to deformation. Therefore, results pre-strained DP600 ...

The stresses and deformations of an eccentric cylindrical cam during the process hydro-joining have been calculated in orthogonal curvilinear coordinates according to mechanical model governing equations terms appropriate complex potentials with suitable boundary conditions. radial shearing stress coefficients determined for example are far less than that tangential hydro-joining. coefficient o...