ProgramMaster Logo
Conference Tools for 2018 TMS Annual Meeting & Exhibition
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Surface Interactions in Materials
Presentation Title Surface Mediated Diffusive Deformation in Nanometer-sized Metallic Crystals
Author(s) Scott Mao, Li Zhong, Frederic Sansoz, Yang He, Chongmin Wang, Ze Zhang
On-Site Speaker (Planned) Scott Mao
Abstract Scope In nanocrystalline (NC) materials, dislocation plasticity and grain-boundary-mediated diffusive plasticity are generally viewed as two major competing mechanisms of plastic deformation. Given the similar roles that surfaces and interfaces play for both dislocation nucleation and diffusive plasticity, such competition could also govern the plastic deformation of nano-sized metals. Thus, similar to the case in NC materials, the strength of small-volume materials are expected to depend closely on specimen size, where the Hall-Petch-type relationship between crystal size and strength in the dislocation-plasticity-dominated regime converts to an inverse Hall-Petch-type relationship when diffusive processes dominate plastic deformation in the lower nanoscale. Here, by performing in situ atomic-scale transmission electron microscopy, we report unusual room-temperature super-elongation without softening in face-centered-cubic silver nanocrystals, where crystal slip serves as a stimulus to surface diffusional creep. This work provides insight into the atomic-scale coupled diffusive–displacive deformation mechanisms, maximizing ductility and strength simultaneously in nanoscale materials.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Analysis of the Interaction of Serum Albumin with Titanium Dioxide Films Using the Extended Derjaguin-Landau-Verwey-Overbeek (X-DLVO) Theory
Deformation of Erythrocytes Adhered to a Solid Surface by a Laminar Flow
Effect of Trace Addition of Graphene in Tribological Properties of Ultrasonic Vibration-assisted Laser Surface Textured Stainless Steel
Effect of Ultrasonic Vibration Assisted Laser Surface Texturing and Melting of Ti-6Al-4V ELI (Biomedical) Alloys on their Microstructural Evolution and Tribological Properties
Effects of Surface Layer Oxides on Spark Plasma Sintering of an Al-Mg Alloy Powder
Effects of Various Surface Treatment Methods on the Flexural Properties of Fiber Metal Laminates
Formation Behavior of Fe2Al5 Phase in Fe/Molten Al Diffusion Couples
Influence of the Electrolyte on the Surface Free Energy of Anodic TiO2 Coatings
Investigating the Surface Interactions of Engineered Inorganic Nanoparticles with Dissolved Organic Materials in Surface Waters
Measurement of Interfacial Strength between a Thin Film and Substrate by Using Nano Mechanical Raman Spectroscopy (NMRS)
Melt Expulsion during Ultrasonic Vibration-assisted Continuous Wave Laser Surface Melting
Multiscale Evaluation of Surface Behavior of Hydroformed AISI 304 Stainless Steel Using ANSYS Multiphysics
Pt Decorating Effect on CNT Surface towards Adsorption of SF6 Decomposed Components
Role of Amorphous Alumina Interlayer over Deposition of ZrN Thin Film on U-Mo Fuel for Nuclear Application
Silane Compound Modification on SiO2 for the Efficient Copper Diffusion Barrier Layer and Adhesion Enhancer of Electroless Copper Plating
Support Structure-dependent Reduction of Cobalt Oxide on Ceria
Surface Energies, Work Functions and Wulff Shapes of Elemental Crystals from High-throughput Density Functional Theory
Surface Mediated Diffusive Deformation in Nanometer-sized Metallic Crystals
Surface Roughening by Plastic Deformation in Amorphous and Crystalline Solids
Ultra-fast Boronizing of Low Carbon Steel Compared with Aluminum, and Zinc Coating
Understanding the Effects of Lubricants/Coatings on Friction and Wear during Reciprocatory Sliding Motion at High Contact Pressures
Wear Mechanism for H13 Steel Tool during Friction Stir Welding of CuCrZr Alloy

Questions about ProgramMaster? Contact programming@programmaster.org