On the fabrication of finer grain structure through using finer wire diameter for wire arc additive manufacturing of AZ31B magnesium alloy

• DOI: 10.1016/j.jmrt.2024.04.113
• Publication Date: 2024-04-17T00:24:51Z
• Authors: Jae-Deuk Kim; Jooyong Cheon; Yeong-Do Park; Yang-Do Kim; Changwook Ji
• Keywords: Equiaxed crystals

Magnesium (Mg) alloys are the lightest structural metallic material, but it is hard to be applied various industrial fields due crystallographic nature that composed with hexagonal closed packed (HCP). Wire arc additive manufacturing (WAAM) could a key fabricating Mg parts large sizes and complex designs. It has numerous advantages such as high material efficiency, short-delivery time by faster speed, easy modify, etc. Yet, most of research mentioned grain coarsening degradation in mechanical properties when WAAM products using alloy wires. To solve problems, solution was suggested supposition lessen deposit metal size little changing finer wire diameter can reduce actual heat input accumulation during process. In this research, AZ31B been conducted 1.0 mm rather 1.2 used common. found (about 90 %) equiaxed microstructure composing product made mm, results about two times higher strength.