Iron is a key ductility-limiting impurity in secondary Al-Si alloys that is responsible for impeding their widespread use in structural applications. An Al-7Si-0.3 Mg alloy with 0.5% Cu and 1% Fe (all in wt.%) was fabricated via laser powder-bed fusion to explore new microstructure engineering pathways with this processing route. While highly refined β-Al5FeSi intermetalli…
This work describes a pilot-scale, thermally controlled gas–liquid absorption column designed for point-source carbon dioxide (COâ‚‚) capture, featuring a 4-m tall, 0.3-m diameter absorber with a capacity of up to 1 t of COâ‚‚ per day. Flue-gas conditions are simulated using a natural gas-fired power generation engine. A key advancement is the integration of a 3D-printed proce…
Convective instabilities in the semi-solid mushy zone can trigger channel formation that leads to defects known as freckles, channel segregates and A-type segregates. Using Flemings’ model, we determine conditions for the onset of local remelting when buoyancy-driven flow is suddenly triggered in an initially stagnant mushy zone. An expression in the form of a Rayleigh num…
Understanding the factors that contribute to county-level suicide rates in the U.S. is essential for guiding effective resource allocation and policy interventions. This study introduces a novel approach to incorporating Social Determinants of Health (SDoH) into probabilistic time-series forecasting models to improve predictive accuracy. We applied time-series models to tw…
The increasing demand for high-performance silicon carbide (SiC)-based materials in advanced technologies highlights the need for a fundamental understanding of the surface chemistry governing SiC growth during chemical vapor infiltration (CVI). However, existing kinetic models often rely heavily on empirical fitting and lack sufficient atomistic detail, which limits their…