Jacob Startt
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View article: Bayesian blacksmithing: discovering thermomechanical properties and deformation mechanisms in high-entropy refractory alloys
Bayesian blacksmithing: discovering thermomechanical properties and deformation mechanisms in high-entropy refractory alloys Open
Finding alloys with specific design properties is challenging due to the large number of possible compositions and the complex interactions between elements. This study introduces a multi-objective Bayesian optimization approach guiding mo…
View article: A molecular dynamics study on the Mie-Grüneisen equation-of-state and high strain-rate behavior of equiatomic CoCrFeMnNi
A molecular dynamics study on the Mie-Grüneisen equation-of-state and high strain-rate behavior of equiatomic CoCrFeMnNi Open
Through atomistic simulations, we uncover the dynamic properties of the Cantor alloy under shock-loading conditions and characterize its equation-of-state over a wide range of densities and pressures along with spall strength at ultra-high…
View article: Tuning the magnetic properties of the CrMnFeCoNi Cantor alloy
Tuning the magnetic properties of the CrMnFeCoNi Cantor alloy Open
Magnetic properties of more than 20 Cantor alloy samples of varying composition were investigated over a temperature range of 5 K to 300 K and in fields of up to 70 kOe using magnetometry and muon spin relaxation. Two transitions are ident…
View article: Atomic Representations of Local and Global Chemistry in Complex Alloys
Atomic Representations of Local and Global Chemistry in Complex Alloys Open
The exceptional properties observed in complex concentrated alloys (CCAs) arise from the interplay between crystalline order and chemical disorder at the atomic scale, complicating a unique determination of properties. In contrast to conve…
View article: Unlocking AlN Piezoelectric Performance with Earth‐Abundant Dopants
Unlocking AlN Piezoelectric Performance with Earth‐Abundant Dopants Open
The increasing demand for high‐performance piezoelectric materials and toxicity and thermal stability issues of the widely used lead zirconate titanates (PZT) have spurred a search for better alternatives in electronic devices. In comparis…
View article: Tuning the Magnetic Properties of the CrMnFeCoNi Cantor Alloy
Tuning the Magnetic Properties of the CrMnFeCoNi Cantor Alloy Open
Magnetic properties of more than twenty Cantor alloy samples of varying composition were investigated over a temperature range of 5 K to 300 K and in fields of up to 70 kOe using magnetometry and muon spin relaxation. Two transitions are i…
View article: Magnetic properties of equiatomic CrMnFeCoNi
Magnetic properties of equiatomic CrMnFeCoNi Open
Magnetic, specific heat, and structural properties of the equiatomic Cantor alloy system are reported for temperatures between 5 kelvin and 300 kelvin, and up to fields of 70 kilo-oersted. Magnetization measurements performed on as-cast, a…
View article: Multi-Resolution Characterization of the Coupling Effects of Molten Salts, High Temperature and Irradiation on Intergranular Fracture
Multi-Resolution Characterization of the Coupling Effects of Molten Salts, High Temperature and Irradiation on Intergranular Fracture Open
This project focused on providing a fundamental physico-chemical understanding of the coupling mechanisms of corrosion- and radiation-induced degradation at material-salt interfaces in Ni-based alloys operating in emulated Molten Salt Reac…
View article: Effect of Excess Mg to Control Corrosion in Molten MgCl2 and KCl Eutectic Salt Mixture.
Effect of Excess Mg to Control Corrosion in Molten MgCl2 and KCl Eutectic Salt Mixture. Open
°C from 1-week length to 16-week length are reported. It was found that the corrosion and strength loss is rather low when the salt is first processed to remove water and oxygen.
View article: Modeling Salt-Material Interactions in Molten Salt Reactors: Opportunities and Path Forward
Modeling Salt-Material Interactions in Molten Salt Reactors: Opportunities and Path Forward Open
A revitalized interest in molten salt reactor technology has resulted in a concerted effort across US based national laboratories and universities to investigate and overcome the remaining scientific and engineering questions facing the in…
View article: Size-dependent plastic deformation of twinned nanopillars in body-centered cubic tungsten
Size-dependent plastic deformation of twinned nanopillars in body-centered cubic tungsten Open
Compared with face-centered cubic metals, twinned nanopillars in body-centered cubic (BCC) systems are much less explored partly due to the more complicated plastic deformation behavior and a lack of reliable interatomic potentials for the…