6 papers
Precipitation strengthening: a collective multi-dislocation phenomenon
Mahmudul Islam, Nicolas Bertin, Sylvie Aubry +2
Precipitation strengthening is a cornerstone of physical metallurgy, delivering otherwise unattainable combinations of strength and ductility. The approach relies on nanoscale prec…
Detecting the Onset and Progression of Spinodal Decomposition using Transient Grating Spectroscopy
Maxwell Rae, Merrill Chiang, Mahmudul Islam +9
Spinodal decomposition can degrade corrosion resistance and embrittle materials. The ability to quickly, conclusively, and non-destructively detect the onset of spinodal decomposit…
Stable Machine Learning Potentials for Liquid Metals via Dataset Engineering
Alex Tai, Jason Ogbebor, Rodrigo Freitas
Liquid metals are central to energy-storage and nuclear technologies, yet quantitative knowledge of their thermophysical properties remains limited. While atomistic simulations off…
Spectral Sampling of Boron Diffusion in Ni Alloys: Cr and Mo Effects on Bulk and Grain Boundary Transport
Tyler D. Doležal, Rodrigo Freitas, Ju Li
Understanding how light interstitials migrate in chemically complex alloys is essential for predicting defect dynamics and long-term stability. Here, we introduce a spectral sampli…
Atomistic mechanisms of oxidation and chlorine corrosion in Ni-based superalloys: The role of boron and light interstitial segregation
Tyler D. Doležal, Rodrigo Freitas, Ju Li
Hybrid Monte Carlo and molecular dynamics simulations were used to investigate the interaction of light interstitials in multi-element Ni-based alloys. We show that light interstit…
Spectral Analysis of Light Interstitial Segregation Energies in Ni: The Role of Local Cr Coordination for Boron and Carbon
Tyler D. Doležal, Rodrigo Freitas, Ju Li
Understanding interstitial segregation in chemically complex alloys requires accounting for chemical and structural heterogeneity of interfaces, motivating approaches that move bey…