#7. Dislocation Glide, Deformation Twinning, Phase Transition, Phonon Transport, and Their Interactions in Heterogeneous Materials


  • Liming Xiong, Iowa State University, USA (lmxiong@iastate.edu)
  • Youping Chen, University of Florida, USA
  • Irene Beyerlein, UCSB, USA
  • David McDowell, Georgia Tech, USA


Symposium Focus: the main goal of this symposium is (i) to present and discuss recent developments on multiscale modeling of dislocation-, twinning-, phase transformation-mediated plasticity, phonon-mediated thermal transport, as well as their interaction in heterogeneous materials containing a high density of interfaces; and (ii) to gain the knowledge that may be utilized for multiscale computational design of materials with desired strength, ductility, toughness, thermal-, corrosion-, irradiation-resistance, and even a combination of them.

Three primary focuses of this symposium are:

(1) Multiscale material modeling theories, methodologies, and algorithms, including (a) Linking discrete and continuum descriptions of the behavior of solid materials under mechanical, thermal, and coupled thermomechanical loadings; (b) Concurrently coupled multiscale approaches, such as concurrent atomistic-continuum methods and concurrent atomistic-coarse grained methods; and (c) Sequential multiscale schemes, such as ab initio or atomistic data-informed dislocation dynamics, phase field, crystal plasticity finite element, kinetic Monte Carlo methods, and among many others.

(2) Multiscale simulation of the dynamics of dislocations, twinning, phase transition, phonon transport, and their interactions with the material interfaces, such as grain boundaries and phase boundaries, in heterogeneous solids under deformation.

(3) Multiscale analysis of the mechanical and transport behavior in a variety of high-performance materials from the atomistic to the microstructure level. The material system of interest to this symposium includes, but is not limited to, polycrystalline metals, lightweight Mg-, Ti-alloys, nanostructured alloys, multilayered or polycrystalline metallic composites, superlattices of semiconductors, oxides, high-/medium-entropy alloys, biological/biomimetic materials, and so on. Theoretical, computational, and applied studies as well as their synergistic coupling with experiments are all welcome.

Confirmed Keynote Speakers

• Jeffrey Rickman (Lehigh University)
• Aidan Thompson (Sandia National Lab)
• Bob Svendsen (RWTH Aachen University)
• Valery Levitas (Iowa State University)