7 papers · 1 filter
Domain-wall energy governs coercivity in ordered and disordered additively manufactured Fe--49Co--2V
Dennis Boakye, Chuang Deng
Additively manufactured soft-magnetic Fe--Co is consistently harder than wrought material of the same composition, and controlling that excess is the central obstacle to printing e…
High-throughput thermodynamic screening of oxide-scale adhesion across the CoCrFeMnNiAl high-entropy alloys
Dennis Boakye, Chuang Deng
One significant benefit of reactive element (RE) additions is the colossal improvement in oxide-scale retention during high-temperature oxidation. Selecting optimal RE dopants in h…
Implicit size dependence of the valence electron concentration criterion in high-entropy alloys
Dennis Boakye, Chuang Deng
The valence electron concentration (VEC) is the most widely used predictor of FCC against BCC stability in high-entropy alloys (HEAs), yet it is a compositional average carrying no…
Solidification-cell confinement of domain-wall pinning in additively manufactured ferromagnets
Dennis Boakye, Eric K. K. Abavare, Chuang Deng
As-built printed ferromagnets typically exhibit higher coercivity than optimized wrought materials, yet existing explanations rely on empirical fits or costly simulations. Herein,…
Dominant-pair free energies predict phase selection in high-entropy alloys
Dennis Boakye, Chuang Deng
Phase selection in multicomponent alloys is governed by the competition between entropic stabilization of disordered solutions and enthalpic driving forces for chemical ordering. H…
Rapid modeling of segregation-driven metal-oxide adhesion in high-entropy alloys using macroscopic atom model
Dennis Boakye, Chuang Deng
Accurate prediction of metal-oxide adhesion in high-entropy alloys (HEAs) is challenging because interfacial segregation, atomic environments, and macroscopic thermodynamic quantit…
Machine-learned accelerated discovery of oxidation-resistant NiCoCrAl high-entropy alloys
Dennis Boakye, Chuang Deng
The development of oxidation-resistant high-entropy alloy (HEA) bond coats is restricted by the limited understanding of how multi-principal element interactions govern scale forma…