A5026233390- Additive Manufacturing Materials and Processes
- Titanium Alloys Microstructure and Properties
- High Entropy Alloys Studies
- Metal and Thin Film Mechanics
- High-Temperature Coating Behaviors
- Intermetallics and Advanced Alloy Properties
- Additive Manufacturing and 3D Printing Technologies
- Mineral Processing and Grinding
- Aluminum Alloy Microstructure Properties
- Advanced Materials Characterization Techniques
- Metallic Glasses and Amorphous Alloys
- Machine Learning in Materials Science
- Electron and X-Ray Spectroscopy Techniques
- High Temperature Alloys and Creep
- Hydrogen embrittlement and corrosion behaviors in metals
- Phase-change materials and chalcogenides
- Welding Techniques and Residual Stresses
- Manufacturing Process and Optimization
- MXene and MAX Phase Materials
- Bone Tissue Engineering Materials
- Advanced materials and composites
- Nuclear Materials and Properties
- High-pressure geophysics and materials
- Advanced X-ray and CT Imaging
- Metallurgy and Material Forming
The Ohio State University
2013-2024
Columbus Center
2015
Advanced manufacturing approaches, including additive (i.e., "3D printing") of metallic structures requires a change to qualification strategies. One approach, informed qualification, integrates modeling strategies make predictions material characteristics, the prediction tensile properties for given chemistries and microstructures. In this work, constitutive equations are developed presented that can predict yield strength additively manufactured Ti-6Al-4V subjected one three different...
Abstract Three-dimensional microscopy has become an increasingly popular materials characterization technique. This resulted in a standardized processing scheme for most datasets. Such motivated the development of robust software package capable performing each stage post-acquisition and analysis. been termed Materials Image Processing Automated Reconstruction (MIPAR™). Developed MATLAB™, but deployable as standalone cross-platform executable, MIPAR™ leverages power MATLAB’s matrix...
In recent research, additions of solute to Ti and some Ti-based alloys have been employed produce equiaxed microstructures when processing these materials using additive manufacturing. The present study develops a computational scheme for guiding the selection such alloying additions, minimum amounts required, effect columnar microstructural transition. We put forward two physical mechanisms that may this transition; first more commonly discussed is based on growth restriction factors,...
The deformation mechanisms in the refractory high entropy alloy AlMo0.5NbTa0.5TiZr have been investigated, with their potential impact on ductility. Specifically, modes of plasticity active B2 matrix and an alloyed version phase Al4Zr5 found at grain subgrain boundaries were explored by use nano-indentation. For phase, a combination weak-beam dark-field superlattice imaging revealed dissociation 〈111〉 superdislocations into two superpartial dislocations, bounding anti-phase boundary (APB),...
Abstract This paper addresses the use of alloying additions to titanium alloys for additive manufacturing (AM) with specific objective producing equiaxed microstructures. The are among those that increase freezing ranges such significant solutal undercooling results when combined rapid cooling rates associated AM, and so be effective in inducing a columnar-to-equiaxed transition (CET). Firstly, computational thermodynamics has been used provide simple graphical means predicting these...
Journal Article Characterizing Sub-lattice Occupancies in B2 Phases High Entropy Metallic Alloys using Atomic Resolution STEM-XEDS Mapping Get access Robert E A Williams, Williams Center for the Accelerated Maturation of Materials, Department Materials Science and Engineering, The Ohio State University, Columbus, OH 43212 Search other works by this author on: Oxford Academic Google Scholar Brian Welk, Welk Bryan D Esser, Esser Gopal B Viswanathan, Viswanathan Genc Arda, Arda FEI Company,...
Journal Article MIPAR™: 2D and 3D Microstructural Characterization Software Designed for Materials Scientists, by Scientists Get access JM Sosa, Sosa Center the Accelerated Maturation of Materials, Department Science Engineering, The Ohio State University, 1305 Kinnear Rd., Columbus, OH 43212 Search other works this author on: Oxford Academic Google Scholar DE Huber, Huber BA Welk, Welk HL Fraser Microscopy Microanalysis, Volume 21, Issue S3, 1 August 2015, Pages 455–456,...
Devices and machines which perform additive manufacturing (adding material in a layer-wise or bead-wise manner to produce complex structure rather than removing through machining) are maturing entering the commercial market. While small prototype parts routinely made using these devices, number of industries, including biomedical aerospace, considering techniques for production parts. New materials take advantage unique capability beginning evolve. Hybridization at smaller scales now becomes...
Novel imaging strategies in the scanning electron microscope aimed at significantly improved image contrast of second phases metal alloys are described. These include use low accelerating voltages, small working distances, and a novel detection system. Contrast is assessed as function voltage optimized conditions which result much quality presented. applied to two precipitation hardened Ni-base alloys, cast single crystal hot isostatically pressed sample.