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Meeting 2014 TMS Annual Meeting & Exhibition
Symposium Multiscale Perspectives on Plasticity in HCP Metals
Sponsorship TMS Structural Materials Division
TMS/ASM: Mechanical Behavior of Materials Committee
Organizer(s) Benjamin M. Morrow, Los Alamos National Laboratory
Suveen Nigel Mathaudhu, University of California, Riverside
Ellen K. Cerreta, Los Alamos National Laboratory
Juan P. Escobedo-Diaz, UNSW Australia
Dallas R Trinkle, University of Illinois, Urbana-Champaign
Scope Hexagonal close-packed (HCP) materials, which often serve as structural materials, are complex because they have relatively low crystal symmetry (compared with cubic materials), and depend on both twinning and slip for ductility. Twinning, in particular, is an important aspect of plasticity in hexagonal materials, but the underlying mechanisms for twin nucleation, growth, and interaction with dislocations are still not completely understood. For this reason, the thorough understanding, and subsequent modeling, of mechanical behavior in hexagonal systems is often challenging. This symposium will focus on the structure-property relationships unique to HCP materials. The necessary interplay between experiments and modeling/simulation to understand the plasticity mechanisms and to develop accurate predictive models will be explored. Special emphasis will be placed on works that connect experimental observations with modeling of mechanical behavior across various length scales.
Session topics include, but are not limited to:
- Microstructural observations (including dislocations, twins, grain and twin boundaries) used to validate or direct modeling efforts
- Mechanical behavior of HCP materials, especially twinning mechanisms and phase transformations, and their contributions to plasticity
- Multiscale modeling and simulation of plastic deformation in HCP materials, including micromechanical and continuum plasticity laws based on nanoscale mechanisms
Abstracts Due 07/15/2013
Proceedings Plan Planned: Metallurgical and Materials Transactions

A Multiscale Approach towards Internal Strain Predictions in Hexagonal Materials
Ab Initio Modelling of Secondary Slip in Zirconium
Atomic-scale Comparison between {-1101} and {-1102} Twin Growth Mechanisms in Magnesium
B42: Measuring the Critical Resolved Shear Stresses in Mg Alloys by Instrumented Nanoindentation
B43: New Interpretation of Monotonic Swift Effects in Anisotropic Materials
Characterization and Modeling of High Strain-rate Tensile Deformation in Zirconium
Connection between the I1 Fault and c+a Slip
Cyclic Loading Experiments and Crystal Plasticity Modeling of Mg AZ31
Deformation Twinning and Associated Stresses in HCP Materials
Effect of Alloying Elements on Twin Activity in Ti and Zr
Experimental and Theoretical Investigation of Deformation and Damage in a-Titanium
Formation of Long Periodic Stacking Orders in Mg Alloys
In Situ Characterization on Oxygen Impurity Effects in α-Titanium
Large Scale Molecular Dynamics Simulations of the Effect of Dislocation Density on Twinning in c-Axis Compression of Magnesium Single Crystals
Micro-cantilever Testing of Hexagonal Close Packed Metals and Alloys
Micromechanics of Pure Magnesium from Atomistic and Continuum Crystal Plasticity Simulations
Microstructural Investigation of Twin Boundaries in HCP Metals and Implications Towards Mechanical Behavior
Modelling Twin Clustering and Its Effect on Formability
Multiscale Effects of Twin-induced Strain Localizations in Mg Alloys
Prismatic Glide in Titanium and Zirconium from Ab Initio Calculations
Role of Deformation Twinning on Swift Effects in AZ31 Mg
Simulating the Evolution of Microtextured Regions during Hot Working of a Near-alpha Titanium Alloy
Stability and Dynamics of Self-interstitial Atom Clusters in hcp Materials
Tensile Twinning Nucleation in Zr Coupled to Neighboring Slip Observed in 3D
The Effect of Temperature on the Deformation Mechanisms of a Zr Alloy
The Nucleation, Core Structure, and Slip of Pyramidal Dislocations in HCP Magnesium: A Molecular Dynamics Study
The {10-12} Extension Twinning in Mg: Variant Selection, Morphology, and Interaction with Slip Systems
Towards Understanding Shear and Shuffles during Compound Twinning in Hexagonal Close-packed Structures
Twinning in Mg from First Principles

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