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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Thermo-mechanical Response of Materials with Special Emphasis on In-situ Techniques
Presentation Title Experimental Techniques to Asses Long Range Internal Stresses in Plastically Deformed Crystalline Solids
Author(s) Michael E Kassner, Lyle E. Levine
On-Site Speaker (Planned) Michael E Kassner
Abstract Scope Long-range internal stresses are widely suggested to exist in uniformly loaded materials as a consequence of dislocation heterogeneities. These include cell and subgrain walls in monotonically deformed materials and dipole bundles and PSBs in cyclically deformed materials. The authors’ in-stiu HVEM, dipole-separation observations and convergent beam electron diffraction experiments, may be less supportive of large LRIS. Most recently, long-range internal stress, was investigated by us using x-ray microbeam diffraction experiments that were able to determine the elastic strains in small volumes within the cell interiors and dislocation cell walls. Most recently the full strain tensors of ECAP deformed aluminum were determined. The results suggest that long-range internal stresses are present to various extents in deformed materials. The magnitude and variation of these stresses with position within the microstructure will be described.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


An Analysis of Thermo-mechanical Fatigue Crack Growth in the Titanium Alloy Ti-6246
Analysis of Longitudinal Twinning in γ-TiAl by Micropillar Compression up to 700 C with Strain and Crystal Orientation Mapping
Combinatorial In Situ Micromechanics of the Al-Cu System at Low Temperatures
Deformation Mechanisms of Cu/Nb Nanoscale Metallic Multilayers as a Function of Temperature and Layer Thickness
Deformation of Monatomic Metallic Glasses Processed through In-situ Ultrafast Liquid Quenching
Design and Fabrication of MEMS-based Symmetric Structure for In-situ Nanomechanical Tensile Experiments
Developing Thermo-mechanical Fatigue Crack Growth Techniques
Emergence and Progression of Abnormal Grain Growth in Minimally Strained Nickel-200
Experimental Techniques to Asses Long Range Internal Stresses in Plastically Deformed Crystalline Solids
High-resolution Digital Image Correlation: Advances in Quantifying the Strain Distribution at the Submicron–scale in Hexagonal Materials
In-situ Deformation and Characterisation of Carbon Controlled Steels
In-situ ECCI Characterization of Microstructural Defects and their Effect on Superconducting Properties of SRF Cavity Niobium
In Situ TEM Imaging and Quantitative Orientation Mapping of the Structural Evolution in Nanocrystalline Metals during Mechanical Deformation
Investigating Irradiation Creep by In Situ TEM
Mechanics of Irradiated Alloys Studied through In Situ TEM Testing
Metals under High-pressure, High Temperature and during Plastic Deformation: In-situ Studies of Thermo-mechanical Response by Neutron and Synchrotron Quantum Beams
Nanomechanical Properties of Graphene Oxide and Carbon Nanotube Scaffolds
Order-disorder Transition in 18-carat Gold Studied by In Situ X-ray Scattering
Phase Transformation during Thermal Treatment of Medium Mn Steels Studied by In-situ Synchrotron Experiments and Thermodynamic Modeling
Plastic Deformation of Silica Glass Studied by Indentation and Micropillar Compression with In-Situ Raman
Rationalization of Heterogeneous Creep Deformation Behavior of Dissimilar Metal Welds
Real Time 3-D X-ray Computed Micro-tomography Study of the Strength and Toughness of Nuclear Graphite between 25° and 1000°C
Studying Tensile Properties of Silicon via In-situ Microcompression Testing of Push-to-pull Pillar
Studying the Micromechanics of Martensitic Phase Transformatons Using High Energy Diffraction Microscopy
The Effect of Strain Rate on the Tensile Properties of Single Crystal Ni – an In Situ Study
“In Situ” Measurement of Electrical Resistivity, Dilatometry and Thermal Analyses of Cast Iron

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