|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||Investigation on the Effect of Process Parameters on the Grain Structures Formed during Wire-arc Additive Manufacture (WAAM) of 2xxx Series Aluminium Alloys
||Joseph Fixter, Philip Prangnell, Eloise Eimer, Jialuo Ding, Stewart Williams
|On-Site Speaker (Planned)
Wire-Arc Additive Manufacturing (WAAM) is highly efficient, can achieve high deposition rates and does not rely on expensive equipment. WAAM thus has the potential to produce large scale, close to net-shape components, with greater design flexibility than conventional processing and at a lower cost than by other AM techniques. However, the deposition of material in layers, involving repeated moving melt pool solidification, can lead to a complex process history and non-ideal heterogeneous microstructures that exhibit microsegregation, columnar grain structures and banded heat affected zones, resulting from the overlapping thermal fields of individual melt tracks. In the work presented the grain structure of aluminium 2xxx series formed in the WAAM process is investigated and the effect of altering the process parameters, such as wire feed speed, energy input and wire travel speed is explored. This is achieved using a variety of techniques such as hardness testing, SEM imaging and EBSD.
||Planned: Supplemental Proceedings volume