A5016883455- Metallurgy and Material Forming
- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Microstructure and mechanical properties
- Metal Forming Simulation Techniques
- High-Velocity Impact and Material Behavior
- Microstructure and Mechanical Properties of Steels
- Manufacturing Process and Optimization
- Fatigue and fracture mechanics
- Aluminum Alloys Composites Properties
- High Temperature Alloys and Creep
- Welding Techniques and Residual Stresses
- Advanced ceramic materials synthesis
- Metal Alloys Wear and Properties
- Metal and Thin Film Mechanics
- High Entropy Alloys Studies
- Advanced Surface Polishing Techniques
- High-Temperature Coating Behaviors
- Intermetallics and Advanced Alloy Properties
- Aluminum Alloy Microstructure Properties
- Powder Metallurgy Techniques and Materials
- Optical measurement and interference techniques
- Electron and X-Ray Spectroscopy Techniques
- Industrial Vision Systems and Defect Detection
- Titanium Alloys Microstructure and Properties
Sandia National Laboratories
2015-2024
Sandia National Laboratories California
2013-2024
University of Illinois Urbana-Champaign
2008-2013
In the absence of pre-existing failure-critical defects, fracture or tearing process in deformable metals loaded tension begins with nucleation internal cavities voids regions elevated triaxial stress. While ductile rupture processes initiate at inclusions precipitates many alloys, pure is often assumed to be associated grain boundaries triple junctions. This study presents ex situ observations incipient, subsurface void tantalum during interrupted uniaxial tensile tests using electron...
Grain-scale microstructure evolution during additive manufacturing is a complex physical process. As with traditional solidification methods of material processing (e.g. casting and welding), microstructural properties are highly dependent on the conditions involved. Additive processes however, incorporate additional complexity such as remelting, solid-state caused by subsequent heat source passes holding entire build at moderately high temperatures build. We present three-dimensional model...
Protection of concrete surface layer is crucial for preserving serviceability and durability structures during their service life. Chemical attack by sulfuric acid an aggressive exposure, commonly causing significant damage to elements such as buildings' foundations basement walls, buildings affected rain, industrial facilities, wastewater treatment facilities. Hence, this study endeavored evaluate the performance nano-modified composites treatments under severe chemical exposures....
This paper introduces an experimental methodology for obtaining high resolution full-field strain measurements in polycrystalline metals. The (sub)grain level of these was indispensable relating measured fields to observed microstructure the material. Microstructural information obtained through electron backscatter diffraction and optical technique digital image correlation (DIC) used acquire deformation measurements. By spatially overlaying both sets results, effects different...
Abstract