Rotational arc based dual wire arc additive manufacturing of low alloy steel with Nichrome inclusions for improved mechanical properties

摘要

? 2022 Elsevier B.V.Rotational Arc based Dual Wire (RADW) technique has been used to additively fabricate a thin wall with fillers wire of ER70S6 and Nichrome. Mechanical, corrosion and microstructural studies of the built specimen have been carried out. The average strength of the build was 1060 MPa, which is much higher than the normal as-fabricated ER70S6 specimens. Detailed microstructural analysis revealed that the inoculated Nichrome was uniformly dispersed over the surface, and the grains were randomly oriented, with a majority of grains forming High Angle Grain Boundaries. The result of the corrosion study revealed that the rate of corrosion is 0.03 mm/year.