Showing papers by "Nicolas Argibay published in 2023"
TL;DR: Chandross and Argibay as mentioned in this paper proposed the interstitial electron density ρ(o) as a direct metric for maximum strength in metals, arising from universal properties derived from an electron gas.
Abstract: Interstitial electron density ρ_{o} is offered as a direct metric for maximum strength in metals, arising from universal properties derived from an electron gas. ρ_{o} sets the exchange-correlation parameter r_{s} in density-functional theory. It holds also for maximum shear strength τ_{max} in polycrystals [M. Chandross and N. Argibay, Phys. Rev. Lett. 124, 125501 (2020)PRLTAO0031-900710.1103/PhysRevLett.124.125501]. Elastic moduli and τ_{max} for polycrystalline (amorphous) metals are linear with ρ_{o} and melting T_{m} (glass-transition T_{g}) temperature. ρ_{o} or r_{s}, even with rule-of-mixture estimate, predicts relative strength for rapid, reliable selection of high-strength alloys with ductility, as confirmed for elements to steels to complex solid solutions, and validated experimentally.
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TL;DR: In this article , a combination of Hall-Petch strengthening, based on the FCC-matrix-phase cell size, particle strengthening and solid-solution strengthening were used to account for the measured strengths.
TL;DR: In this article , a combination of XRD/XRF and SEM-EDS/EBSD measurements were performed to rapidly establish baseline structure-property relationships, which revealed that eutectic microstructures were largely suppressed throughout the explored composition ranges resulting in limited ductility and extraordinary hardness.
TL;DR: In this article , the role of microstructure on the dwell effect of molybdenum disulfide (MoS2) coatings was investigated through intermittent sliding experiments with dwell times ranging from 30 s to 48 h (172,800 s) at pressures from 7 × 10−9 to 2 × 10 −1 torr.