|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Multiscale Architectured Materials (MAM II): Tailoring Mechanical Incompatibility for Superior Properties
||Designing Optimal Bimodality in Harmonic Architectured Materials Using Statistical Synthetic Model
||Hyung Keun Park, Jaimyun Jung, Hyoung Seop Kim
|On-Site Speaker (Planned)
||Hyung Keun Park
In recent years, metallic materials with a bimodal distribution of grain size have received a lot of interest due to their ideal combination of high strength and reasonable ductility. As a new architecture, harmonic structure, which is composed of periodically arranged coarse-grained cores and ultrafine-grained shells, can be regarded as a kind of bimodal structures. In this presentation, we investigate the relationship among strength, ductility, and bimodality of grain sizes, and propose an optimal harmonic architectured structure. Virtual three-dimensional harmonic structures with various bimodalities are synthesized using a statistical model. The finite element method is employed to evaluate the mechanical properties of the synthesized harmonic structures. The remarkable winning combination of strength and ductility was achieved at certain bimodality, compared to their coarse-grained and ultrafine-grained structures.