Ductile cast irons (DCIs) are characterized by a wide range of mechanical properties, mainly depending on microstructural factors, as matrix microstructure (characterized by phases volume fraction, grains size and grain distribution), graphite nodules (characterized by size, shape, density and distribution) and defects presence (e.g., porosity, inclusions, etc.). Versatility and higher performa...

To gain a deeper understanding of the dynamic accommodation mechanism internal stress in pearlite originating from lattice misfit between ferrite and cementite phases, parameter ratios cementite, bθ/aθ cθ/aθ, were locally analyzed detail using electron backscatter diffraction (EBSD) technique. The EBSD analysis revealed that lamellae clearly differed those spheroidized particles, indicating has...

Plane-strain machining can be used to impart large plastic strains in alloys that are difficult to deform by other severe plastic deformation (SPD) processes. By cutting at low speeds, the heating caused by friction with the tool can be reduced to insignificant levels. The utility of this approach for characterizing microstructure development in SPD is demonstrated using a variety of commercial...

This paper investigates the manipulation of chemical composition a laser weld by dissimilar filler material and its effect on residual stress. The aim is to minimize stresses in seam. In order negate stresses, combinations low-carbon manganese steel (S235JR) base with high-alloyed solid wires (G19 9 G25 20), as well similar low-alloyed wire G3Si1 are analyzed. goal show that so-called low-trans...

Heat treatments are frequently used to modify the microstructure and mechanical properties of materials according requirements their applications. Laser surface treatment (LST) has become a relevant technique due high control parameters localization involved in modification. It allows for rapid transformation near surface, resulting minimal distortion workpiece bulk. LST encompasses, turn, lase...

Abstract This paper presents the microstructural changes and mechanical properties of carbide-free bainitic steel subjected to various heat treatment processes compares these results with similarly treated ferritic–pearlitic steel. A key feature investigated steel, which is common among others described in literature, that Si content developed was >1 wt.% avoid carbide precipitation retained...