Experimental Dataset, Optical Micrographs, and Radiographic Inspection Results for WAAM-Fabricated ER70S-6 Steel
Description
This repository contains an experimental dataset, optical micrographs, and gamma-ray radiographic inspection results obtained from nine WAAM processing conditions of ER70S-6 steel. For each deposited wall, microstructural characterization and hardness measurements were conducted at three sampling locations (top, middle, and bottom) to evaluate the influence of build location on material properties. The dataset includes ferrite fraction, grain diameter, defect severity, and Vickers hardness measurements obtained from two experimental replications of each processing condition, yielding a total of 54 observations. The repository also provides supporting microstructural and radiographic images used for ferrite quantification, grain size measurement, and defect characterization.
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Steps to reproduce
The dataset was generated from Wire Arc Additive Manufacturing (WAAM) experiments using ER70S-6 steel wire. Nine processing conditions were established by combining three welding current levels (110, 130, and 150 A) with three travel speeds (100, 140, and 180 mm/min). Arc voltage was maintained at 19 V and heat input was calculated from the welding parameters. For each processing condition, two experimental replications were produced. The deposited walls were sectioned into three sampling locations (top, middle, and bottom) for characterization. Microstructural analysis was conducted using optical microscopy after standard metallographic preparation and etching. Ferrite fraction was quantified using image analysis, while grain diameter was measured according to ASTM E112. Defect characterization was performed using gamma-ray radiographic inspection. Defect severity was determined from the ratio of the defect-affected transition region area to the total projected wall area. Vickers hardness measurements were conducted according to ASTM E92 using a 10 kgf load at the top, middle, and bottom regions. The resulting dataset contains ferrite fraction, grain diameter, defect severity, heat input, build location, and hardness measurements from a total of 54 observations.