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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
Presentation Title NOW ON-DEMAND ONLY - Correlating the Microstructure of Friction-stir Processed Al 7085 to Mechanical Properties Using In-situ Micromechanical Testing
Author(s) Tanvi Ajantiwalay, Christian Roach, Hrishikesh Das, Mert Efe, Piyush Upadhyay, Arun Devaraj
On-Site Speaker (Planned) Tanvi Ajantiwalay
Abstract Scope Local mechanical properties of industrially relevant lightweight Aluminum alloys such as 7085 can be significantly modified by using friction stir processing (FSP). FSP involves application of severe shear deformation, which leads to highly refined dynamically recrystallized grains, unique precipitation and shear deformation induced textures. In this study, the microstructural modification achieved by FSP of Al7085 alloy is revealed using systematic transmission electron microscopy and atom probe tomography studies. This detailed understanding of the microstructure is then correlated to the mechanical properties via in-situ nanoindentation and micro-pillar compression using PI89 Picoindenter inside a plasma focused ion beam (PFIB). The specimens fabricated using the PFIB eliminates gallium implantation in Al, which is inherent to Ga-based FIBs. This direct correlation of local mechanical properties to corresponding microstructures can enable “right property at the right place” approach in component design of lightweight alloys.
Proceedings Inclusion? Planned:
Keywords Composites, Mechanical Properties, Process Technology

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A Numerical Study on Surface Effect in Hexagonal Slip Activity
A Predictive Capability for Mechanical Behavior of Additively Manufactured Lattice Structures
A Rapid Testing Method for Evaluating Strain-path Sensitivity
Achieving the Maximum Modulus of Resilience in Polymer Nanocomposites via Sequential Infiltration of Metal Oxides
Atomistic Insight into Cumulative Twin-solute Interactions in Mg Alloys
Capturing the Mechanical Response of Three Phase Semi-solids at High Temperatures Using In Situ Synchrotron Imaging - From Superalloys to Magmas
Characterization of the Role of Lath Boundaries in Lath Martensitic Steel Using In-situ Micro-pillar Compression Tests
Deformation and Mechanical Properties of Benzene Microcrystals at Cryogenic Temperatures
Deformation Behavior Identification of a Friction Stir Welded 304L Austenitic Stainless-steel Using In-situ EBSD
Determination of Fracture Toughness Using the Compression Fracture Technique
Dwell Fatigue in Ti Alloys; TEM on Dislocations, HEDM, alpha2-Ti3Al and SAXS
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Effect of Temperature and Composition on the Superelasticity of SrNi2P2 Single Crystal
Elucidating Deformation Pathways in Refractory Multi-principal Element Alloys via In Situ Experiments
Emerging Capabilities for the High-throughput Characterization of Structural Materials
Examining Hot Corrosion Crack Tip Arrest through Advanced Microscopy Analysis of Ni-superalloy CMSX-4
Growing Voids and Migrating Twins
High-throughput Fatigue Testing of Nanocrystalline Al Thin Films
High Energy X-ray Diffraction – Seeing Data through a Model
High Strength Nanocrystalline CoAl Intermetallics with Room Temperature Deformability
In-situ Digital Image Correlation Study to Reveal Cyclic Plastic Strain Localizations in Stainless Steel 316L
In-situ Mechanics of Superalloys and Bond Coating at 1000C
In-situ SEM Investigation of Thermally Induced Cracking in Shape Memory Ceramics
In-situ TEM Observation of Shear Induced Microstructure Evolution in Cu-Nb Alloy
In Situ 3D Characterization and Crystal Plasticity Modeling of Martensite Formation in Austenitic Steels
In Situ Observation of Room Temperature Crack-healing in an Atomically Layered Ternary Carbide
In Situ TEM Measurements of Electron-induced Creep in Amorphous Materials
Inferring Dynamic Mechanical Properties of Materials Using a Combination of High-rate Machining Experiments and Simulations
Integrated Discrete Dislocation Plasticity Modelling, HR-EBSD and TEM Characterisation of Ti Dwell Fatigue
Investigation of Dislocation-grain Boundary Interactions through In-situ Micro-mechanical Testing with Strain Mapping
L-48: Deformation Behaviour of Novel Beta-Ti Bcc-Superalloys
L-50: Multiscale Mechanical Evaluation of FiberForm
Linking Local and Global Strains: From Films to Lattices
Micro-mechanical Investigation of a High-pressure Torsion Processed Nano-crystalline WCu Composite
Modeling In-situ X-ray Diffraction of Dislocation Evolution during Selective Laser Melting of 316L Stainless Steels with Discrete Dislocation Dynamics and GPU-accelerated Raytracing
NOW ON-DEMAND ONLY - Correlating the Microstructure of Friction-stir Processed Al 7085 to Mechanical Properties Using In-situ Micromechanical Testing
Similarity of Microscopic Strain Localization in Very Different Microstructures
Strain Localization in Metastable Beta Ti Alloys in Relation to the Beta Structure
Super-fast Fabrication of Micropillar Arrays Using Laser FIB Combination for More Statistically Relevant Micropillar Compression Tests
Tensile and FatigueTesting of Metallic Thin Films with Ultra-thin Passivation Layers
The Development of a Laboratory-scale High-energy Diffraction Microscopy Instrument
The Mechanical Behavior of Passivated Al and Al-C Thin Films
Three-dimensional Dislocation Characterization during In-situ Straining TEM
Toward Improved Constitutive Behavior Models Sensitive to High Strength Steel Microstructures through Advancements in Data Analysis Tools
Transmission X-ray Microscopy Reveals Role of Voids in Hydrogen Embrittlement
Using High Energy X-rays to Investigate the Evolution of Plastic Strain and Damage in Additively Manufactured 316L Stainless Steel
X-ray Microbeam Characterization of Electromigration Process in Al(0.25wt% Cu) Interconnect

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