Abstract Scope |
There are still challenges associated with additive manufacturing (AM) decelerating its adoption to various industrial sectors for fabricating parts being deployed in fatigue critical applications. This is attributed to the process-induced defects, i.e., residual stress, surface roughness, and volumetric defects, which deteriorate the fatigue and fracture of AM materials. There are also challenges to regulate the source of variabilities in AM; the above-mentioned defects can vary from AM technique-to-AM technique, machine-to-machine, and even build-to-build for a single material system. Accordingly, it is essential to understand the process-structure-property (PSP) relationships of additively manufactured materials. There have been efforts conducted by research organizations and industrial corporations to enhance the fatigue performance of materials via feedstock optimization, process parameter modification, and post-process treatments (i.e., thermal heat treatment, surface treatment). This talk aims to review the PSP relationships for various AM materials, challenges, and possible opportunities to enhance fatigue performance of AM materials. |