The family of additive manufacturing techniques has been attracting significant attention of manufacturers and researchers. However, material shaping is not a sufficient requirement to attain specific mechanical performance in terms of structural integrity. For this reason is of utmost importance to improve understanding of failure mechanisms and thus define future directions of development for manufacture optimisation. In this study, a wide range of micro-scale experimental techniques is exploited to shed light on fatigue failure mechanisms of Laser Metal Deposition IN718 Ni-base superalloy, and to study the effect of shot peening treatment.
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