|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Additive Manufacturing: Nano/Micro-mechanics and Length-scale Phenomena
|What Can We Learn from Micromechanical Testing: A Case Study for EBM-produced Ti-6Al-4V
|On-Site Speaker (Planned)
Micromechanical testing, an approach that has been mostly limited to nanoindentation in the 1990s, now consists of numerous powerful tools applicable to a wide range of materials and structures. Micropillar compression and cantilever bending experiments are just two examples among many recently developed techniques, which have enabled direct measurements of fundamental mechanical properties such as yield strength and fracture toughness at the nanoscale. The implications of nanomechanical testing for additive manufacturing (AM) are twofold. Firstly, mapping-based approaches can probe the changes in local mechanical properties due to variations in processing conditions and thermal history, especially in the build direction. Secondly, AM-produced alloys' microstructure is often different from the conventionally manufactured counterparts, and small-scale testing provides insight into the associated structure-property relationships. This presentation provides an overview of some recent findings on these matters, with an emphasis on our recent work on Ti-6Al-4V parts produced by electron beam melting.
|Additive Manufacturing, Mechanical Properties, Characterization