To weaken the harm of Al–Si coating and increase strength welded joints, variable thicknesses Ni foil (Ni, an austenitic formation element) were added to lap laser welding Al–Si-coated 22MnB5 hot stamping steel/galvanized steel joints. The joints’ weld appearance, microstructure, mechanical properties explored. altered from X shape a Y with increased thickness foil. During welding, was melted d...

A method for finding the microstructural parameters of low-carbon steel using its metallographic images is proposed. It allows to determine the following parameters: the ratio of perlite to ferrite phases, the parameters of grains of crystallites and their mutual arrangement; the degree of granularity of the pearlite phases. The method is aimed at predicting the strength characteristics of stee...

The phase structure and the pitting susceptibility of two carbon steels, Q235 and HRB335, used for reinforced concrete, are investigated by phase observation, polarization curve measurements, electrochemical impedance spectroscopy, and Mott-Schottky analysis. It is found that Q235 is ferrite and HRB335 is pearlite. Q235 is more susceptible to chloride ions leading to pitting than HRB335. The po...

This paper describes an automatic system for segmentation and quantification of the microstructures of white cast iron. Mathematical morphology algorithms are used to segment the microstructures in the input images, which are later identified and quantified by an artificial neuronal network. A new computational system was developed because ordinary software could not segment the microstructures...

A mechanistic model for the micro-endmilling process is developed that explicitly accounts for the different phases while machining heterogeneous materials. It is shown that frequencies in the cutting force signal higher than those that can be explained by the kinematics of the process can be explained by considering the multiple phases in the material. Experiments are performed on two composit...

Abstract The production of thin-wall ductile iron (TWDI) by high-pressure die-casting (HPDC) is complex because several metallurgical and microstructural challenges. present work aims to evaluate the austemperability components (4 mm thickness) produced HPDC process. graphitization kinetics, pearlite formation during continuous cooling, effect austempering on evolution ausferritic microstructur...