The 9th International Conference on Multiscale Materials Modeling

講演情報

Symposium

L. Structure, Statistics and Mechanics in Crystal Dislocation Plasticity

[SY-L2] Symposium L-2

2018年10月29日(月) 15:45 〜 17:45 Room8

Chairs: Charles Reichhardt(Los Alamos National Laboratory , United States of America), Peter Schall(University of Amsterdam, Netherlands)

[SY-L2] Designing Interfaces: a combinatorial approach to geometrical manipulation of interfaces

Hakan Yavas1, Alberto Fraile1, Tomas Polcar1,2, Ondrej Man3 (1.Czech Technical University, Czech Republic, 2.University of Southampton, UK, 3.CEITEC, Czech Republic)

The selection and design of modern high-performance engineering materials are driven by
controlling and optimizing varieties of mechanical and thermal properties such as strength,
ductility, plasticity, and toughness. Nanoscale metallic multilayers (NMMs) are the relatively
new class of materials with a high potential of changing their conventional counterparts that
are using in the high-end applications, i.e. nuclear, space and aerospace. The superior properties of
the NMMs are mostly correlated with the advanced design and fabrication of the interfaces at
a very confined space (2- 20 nm). In this presentation, we will represent a novel nanoscale
interface architecture of the Zr-Nb NMMs that are fabricated by following epitaxial and physical
vapor deposition based film-growth techniques. Then, we will discuss the effect of polycrystalline,
epitaxial and amorphous interfaces on the deformation kinetics. Additionally, we will also present
the dynamic response maps of the molecular dynamics simulations and correlate them to dislocation activity.