About this Research Topic
Additive manufacturing (AM) is a transformative technology that enables the fabrication of materials with complex shapes and geometries, facilitating customized on-demand fabrication. AM has gained significant traction lately due to potential high-performance applications in multiple industries. However, the microstructure and properties of the additively manufactured components are remarkably different and, in some cases, non-repeatable compared to those of the conventionally cast counterparts, which makes it challenging for industries to adopt them confidently. The microstructure and the properties of AM parts can also shift drastically depending on the type of AM technique (laser vs e-beam; LPBF, DED, Binder Jetting, and Sheet Lamination), the equipment used, and the processing conditions employed. Recent trends in solid-state AM such as cold-spray AM, and friction stir-based AM techniques enabled near defect-free components with better production rate and presence of a wrought-like microstructure. However, the techniques have not matured enough for industrial adoption due to lack of understanding of the influence of process variables and resulting microstructure on the final build, and process fidelity. Thus, a wholesome understanding of the microstructure and the properties of AM materials is essential to reap the benefits of AM.
Therefore, this special issue focuses on high-fidelity characterization data on additive manufactured Materials. The topics include but are not limited to the following:
1. Macro to Micro Residual Stress Characterization
2. Porosity and Other Defects Characterization
3. Microstructural Characterization (compositional homogeneity, grain morphology, secondary/tertiary phase precipitation, dislocation features, etc.)
4. Microstructural Evolution Pathways
5. In-situ sensing and monitoring of melt pool and defect formation
6. Room temperature to high-temperature mechanical property characterization (tensile, compression, nanoindentation, fatigue, creep, wear, scratch, etc.)
7. Functional Property Characterization (Magnetic, Biomedical, Thermal, Oxidation, Corrosion, and Irradiation Resistance)
8. Novel characterization techniques specific to AM that may expand or replace the traditional techniques.
9. Microstructure modeling, finite element methods, mesh-free techniques and other high throughput simulation techniques that decipher AM process kinetics which advance the state of the art, backed by relevant experimental results.
Material systems are limited to pure metals, metal alloys, and metal-matrix composites.
Therefore, this special issue focuses on high-fidelity characterization data on additive manufactured Materials. The topics include but are not limited to the following:
1. Macro to Micro Residual Stress Characterization
2. Porosity and Other Defects Characterization
3. Microstructural Characterization (compositional homogeneity, grain morphology, secondary/tertiary phase precipitation, dislocation features, etc.)
4. Microstructural Evolution Pathways
5. In-situ sensing and monitoring of melt pool and defect formation
6. Room temperature to high-temperature mechanical property characterization (tensile, compression, nanoindentation, fatigue, creep, wear, scratch, etc.)
7. Functional Property Characterization (Magnetic, Biomedical, Thermal, Oxidation, Corrosion, and Irradiation Resistance)
8. Novel characterization techniques specific to AM that may expand or replace the traditional techniques.
9. Microstructure modeling, finite element methods, mesh-free techniques and other high throughput simulation techniques that decipher AM process kinetics which advance the state of the art, backed by relevant experimental results.
Material systems are limited to pure metals, metal alloys, and metal-matrix composites.
Keywords: Additive Manufacturing, Microstructure, Mechanical Properties, Defects, Functional Properties, Phase Evolution, Characterization
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