|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||A-17: Microstructure Evolution of Metallic Parts Influenced by Rapid Solidification during Additive Manufacturing
||Matjaz Godec, Elena Chernyshova, Jaka Burja, Barbara Šetina Batič, Bojan Podgornik
|On-Site Speaker (Planned)
Additive manufacturing (AM) technologies make possible the production of metallic parts with geometrical and other properties that cannot be obtained with traditional production techniques by using the layer-wise consolidation of feedstock materials in the form of powders. Selective laser melting is one of most advanced and most promising AM technologies, which uses a laser to melt the powders. During the AM process the material is several times remelted and rapidly solidified. The microstructure depends on the temperature gradient and the solidification velocity and, therefore, the AM microstructure is very different to traditionally obtained microstructures based on solidification and deformation processes. Using several examples, microstructure formation, texture development and grain-boundary types are explained and commented on. The microstructures are also correlated with the mechanical properties, and some defects in the microstructures are explained and phenomena such as laser passes, shown as darker lines in etched microstructures, are explained using high-resolution TEM.
||Planned: Supplemental Proceedings volume