Brookhaven National Laboratory features EMREL’s work on additively manufactured stainless
A new study led by EMREL sheds light on the connection between the corrosion behavior and underlying materials structure in laser additively manufactured 316L stainless steel – a corrosion resistant metal used widely in Naval applications. Using multimodal synchrotron X-ray techniques, we uncovered new connections between printing parameters and the defect state in the material, enabling researchers to map pathways for engineering an even better corrosion resistant printed alloy. More information may be found HERE .
Dave's paper "Dislocation Microstructure and its Influence on Corrosion Behavior in
Laser Additively Manufactured 316L Stainless Steel" published in Additive Manufacturing.
In this study, we employ multimodal synchrotron x-ray diffraction, imaging, and spectroscopy techniques combined with correlative transmission electron microscopy (TEM) to ascertain atomic, microstructural, and chemical information from a series of L-PBF 316L stainless steel specimens produced at different print raster speeds.
Bin's paper "Tailoring microstructure in sintered Cu-Cr-Nb-Zr alloys for fusion components"
published in Journal of Nuclear Materials.
In this study, we employ direct current sintering (often referred to as spark plasma sintering) to produce a Cu-Cr-Nb-Zr (CCNZ) alloy from gas-atomized feedstock powder with tailored precipitate distributions for enhanced stability and creep resistance.
Streit's paper "Suppressing Irradiation Induced Grain Growth and Defect Accumulation
in Nanocrystalline Tungsten through Grain Boundary Doping" published in Acta Materialia.
In this study, we probe the coupling between microstructural evolution and radiation damage state in a solute-stabilized nanocrystalline W-20 at.% Ti alloy relative to unalloyed W films using heavy ion irradiation experiments performed at room temperature. By tracking defect evolution in situ during a single grain growth, we demonstrate the intimate coupling between the defect density and evolution of the microstructure. On this basis, the impact of Ti on the behavior of nanocrystalline W is expanded beyond alloy stability to the mechanisms of transient defect accumulation and recovery.
EMREL's Prof. Snead, Prof. Trelewicz, and Prof. Sprouster receive DOE ARPA-E GAMOW
This DOE award of 2.4 million dollars will be used toward research and development of materials for "ENHANCED Shield: A Critical Materials Technology Compact Superconducting Tokamaks". More information may be found HERE.
Dave's paper "Advanced Synchrotron Characterization Techniques for Fusion Materials
Science" published in Journal of Nuclear Materials.
In this study, we present state-of-the-art synchrotron-based x-ray characterization methods as applied to fusion materials research. Specific examples of fusion materials systems, where complimentary structural information from a combination of conventional and synchrotron techniques are presented.