Search Results - "Curtin, W.A"
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Vanadium is an optimal element for strengthening in both fcc and bcc high-entropy alloys
Published in Acta materialia (15-04-2020)“…[Display omitted] The element Vanadium (V) appears unique among alloying elements for providing high strengthening in both the fcc Co-Cr-Fe-Mn-Ni-V and bcc…”
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A ductility criterion for bcc high entropy alloys
Published in Journal of the mechanics and physics of solids (01-07-2021)“…A current goal driving alloy development is the identification of alloy compositions for high temperature applications but with the additional requirement of…”
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3
Thermal activation parameters of plastic flow reveal deformation mechanisms in the CrMnFeCoNi high-entropy alloy
Published in Acta materialia (15-01-2018)“…To reveal the operating mechanisms of plastic deformation in an FCC high-entropy alloy, the activation volumes in CrMnFeCoNi have been measured as a function…”
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The austenite/lath martensite interface in steels: Structure, athermal motion, and in-situ transformation strain revealed by simulation and theory
Published in Acta materialia (01-08-2017)“…The austenite/martensite (fcc/bcc) interface is prevalent across many new classes of high-strength steels, and yet both its fundamental structure and its…”
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Dislocation cross-slip in fcc solid solution alloys
Published in Acta materialia (15-04-2017)“…Cross-slip is a fundamental process of screw dislocation motion and plays an important role in the evolution of work hardening and dislocation structuring in…”
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Cross-slip of long dislocations in FCC solid solutions
Published in Acta materialia (01-10-2018)“…Cross-slip of screw dislocations is a dislocation process involved in dislocation structuring, work hardening, and fatigue. Cross-slip nucleation in FCC solid…”
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New theory for Mode I crack-tip dislocation emission
Published in Journal of the mechanics and physics of solids (01-09-2017)“…A material is intrinsically ductile under Mode I loading when the critical stress intensity KIe for dislocation emission is lower than the critical stress…”
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Analytical models of short-range order in FCC and BCC alloys
Published in Acta materialia (01-03-2022)“…[Display omitted] A statistical-mechanics analysis is used to create analytic estimates for the short-range order (SRO) parameters in FCC and BCC solid…”
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Theory of spontaneous grain boundary roughening in high entropy alloys
Published in Acta materialia (01-08-2022)“…[Display omitted] High Entropy Alloys (HEAs) are a new broad class of near-random solid solution alloys that can possess some impressive mechanical and…”
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Atomistic study of hydrogen embrittlement of grain boundaries in nickel: I. Fracture
Published in Journal of the mechanics and physics of solids (2017)“…Hydrogen ingress into a metal is a persistent source of embrittlement. Fracture surfaces are often intergranular, suggesting favorable cleave crack growth…”
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Atomistic simulations of dislocations in a model BCC multicomponent concentrated solid solution alloy
Published in Acta materialia (15-02-2017)“…Molecular statics and molecular dynamics simulations are presented for the structure and glide motion of a/2〈111〉 dislocations in a randomly-distributed…”
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Energetics of dislocation transformations in hcp metals
Published in Acta materialia (15-10-2016)“…Dislocation core structures of hcp metals are highly complex and differ significantly among the hcp family. Some dislocations undergo unconventional…”
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Brittle and ductile crack-tip behavior in magnesium
Published in Acta materialia (15-04-2015)“…The competition between dislocation emission and cleavage at a crack tip plays an important role in governing the intrinsic fracture behavior of crystalline…”
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Combining experiments and modeling to explore the solid solution strengthening of high and medium entropy alloys
Published in Acta materialia (15-09-2019)“…The mechanical properties due to solid solution strengthening are explored within the single phase face-centered cubic (fcc) domain of the Co–Cr–Fe–Mn–Ni high…”
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A new mechanism for twin growth in Mg alloys
Published in Acta materialia (01-12-2014)“…Twinning is an important deformation mode in lightweight Mg alloys, but the mechanisms of nucleation and growth of twins and their interactions with solutes…”
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Solute strengthening of twinning dislocations in Mg alloys
Published in Acta materialia (01-11-2014)“…Solute strengthening of twin dislocation motion along an existing twin boundary in Mg-X (X=Al, Zn) is investigated using a new Labusch-type weak pinning model…”
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New theory for crack-tip twinning in fcc metals
Published in Journal of the mechanics and physics of solids (01-04-2018)“…Dislocation emission from a crack tip is a necessary mechanism for crack tip blunting and toughening. In fcc metals under Mode I loading, a first partial…”
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Design strategy for controlled natural aging in Al–Mg–Si alloys
Published in Acta materialia (01-10-2016)“…This study presents a design strategy for Al–Mg–Si alloys to control natural aging. Recently, trace addition of Sn was shown to suppress natural aging for up…”
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Contribution of austenite-martensite transformation to deformability of advanced high strength steels: From atomistic mechanisms to microstructural response
Published in Acta materialia (01-09-2018)“…Steels combining austenite (fcc) with lath martensite (bcc) in nanolaminate microstructures are tough, resistant to hydrogen-embrittlement, and inexpensive,…”
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Continuum and atomistic models of strongly coupled diffusion, stress, and solute concentration
Published in Journal of power sources (2011)“…Poor cyclic performance of electrodes in lithium-ion rechargeable cell batteries is calling for efforts to develop continuum models of diffusion under very…”
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