The influence of test temperature on the anisotropy of mechanical properties of metallic materials synthesized by the WAAM method

WAAM technology helps manufacture metal parts using continuous wire feed and argon arc welding, enabling high-speed printing and the production of components with unique properties. However, as with any other additive manufacturing process, the behavior of these materials under temperature remains poorly understood. Experimental studies of the mechanical properties of synthesized materials: ER70S-6 low-carbon alloy steel, ER-308LSi stainless steel and ER5356 aluminum alloy at different heating temperatures were carried out. Mechanical properties were studied using samples cut in various directions from synthesized blanks, allowing for the anisotropy of the resulting materials to be examined. Synthesis conditions, that allowed for the manufacture of samples with tensile strengths similar to those of the rolled products in their original state, were developed. A significant influence of properties on the anisotropy was observed not only from the sample placement in the synthesized prism but from the heating temperature during tensile testing as well. It was found that for ER70S-6 low-carbon steel and ER5356 aluminum alloy, the orientation of the cut specimens had a more significant effect on the change in tensile strength and elongation than the testing temperature. For ER-308LSi stainless steel the sample cutting direction and testing temperature had an equal impact on their strength properties.