Abstract
This work investigates the anisotropy with the fatigue crack propagation behaviour of wire arc additive manufactured 316L stainless steel. Tension and fatigue crack growth tests were conducted on specimens prepared along the traverse, build and diagonal directions from single bead wall deposits. Anisotropy was observed with the fatigue crack propagation behaviour and tensile properties. The fatigue crack growth rates were comparable along the build and traverse directions. However, the slowest crack growth rate was observed along the diagonal direction. The high ductility observed along the diagonal direction limits the crack growth rate.
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