Vickers Hardness Variation on the Part and Welding Cord Subjected to Plastic Deformation

Abstract

By performing Vickers identifications in the area of the weld bead and the areas adjacent to it, the degree of plastic deformation can be assessed, highlighting the different hardness in the case of welding and the base material. During this work, welded specimens were made in the central area with a double V-shaped cord. One of the specimens was loading until breaking, noting that the rupture occurred in an area further away from the welding area. Another 13 specimens were required at varying degrees of deformation. Stresses above the elastic limit create differences in the plastic deformation of the areas of the weld bead and those in its vicinity. Due to the fact that the base material and the material of the weld bead have different elastic characteristics, much more pronounced plastic deformations occur in the base material compared to the weld bead. It was found that the base material suffered significantly greater plastic deformation than the weld bead. Significant differences in hardness occur in the area of the weld bead relative to the area of the base material.