Search Results - "Brown, S.G.R"

Effects of hot isostatic pressing on the elastic modulus and tensile properties of 316L parts made by powder bed laser fusion by Lavery, N.P., Cherry, J., Mehmood, S., Davies, H., Girling, B., Sackett, E., Brown, S.G.R., Sienz, J.

“…The microstructure and mechanical properties of 316L steel have been examined for parts built by a powder bed laser fusion process, which uses a laser to melt…”
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An investigation of micro-mechanisms in hydrogen induced cracking in nickel-based superalloy 718 by Jothi, Sathiskumar, Merzlikin, S.V., Croft, T.N., Andersson, J., Brown, S.G.R.

“…Hydrogen embrittlement of the nickel-iron based superalloy 718 has been investigated using slow strain rate tests for pre-charged material and also in-situ…”
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Prediction of phase, hardness and density of high entropy alloys based on their electronic structure and average radius by Calvo-Dahlborg, M., Mehraban, S., Lavery, N.P., Brown, S.G.R., Cornide, J., Cullen, J., Cieslak, J., Leong, Z., Goodall, R., Dahlborg, U.

“…•The [e/a;rAtomic] classification can design hardness, density and phases of HEAs.•The HEA phases Domains are: I-fcc e/a < 1.53; II-mixed 1.53 < e/a < 1.88;…”
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A quantitative investigation of the structure of Raney-Ni catalyst material using both computer simulation and experimental measurements by Barnard, N.C., Brown, S.G.R., Devred, F., Bakker, J.W., Nieuwenhuys, B.E., Adkins, N.J.

“…Monte Carlo modelling is used to simulate the 3D nano-porous structure of leached Raney-nickel catalyst material. Calculated surface areas from the model…”
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Numerical determination of liquid flow permeabilities for equiaxed dendritic structures by Brown, S.G.R, Spittle, J.A, Jarvis, D.J, Walden-Bevan, R

“…Darcy's law has been applied to the 3D finite difference numerical determination of the influence of solid fraction and geometry on the permeability of…”
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Hume-Rothery for HEA classification and self-organizing map for phases and properties prediction by Calvo-Dahlborg, M., Brown, S.G.R.

“…The Hume-Rothery approach applied in terms of e/a to classify and design quasicrystals and BMG is revisited for the case of HEAs. The results were compared…”
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Multi-phase modelling of intergranular hydrogen segregation/trapping for hydrogen embrittlement by Jothi, Sathiskumar, Croft, T.N., Wright, L., Turnbull, A., Brown, S.G.R.

“…Premature failure in polycrystalline materials due to hydrogen absorption affects a wide range of applications, including clean energy systems, hydrogen…”
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Influence of grain boundary misorientation on hydrogen embrittlement in bi-crystal nickel by JOTHI, Sathiskumar, CROFT, T. N, BROWN, S. G. R

“…Computational techniques and tools have been developed to understand hydrogen embrittlement and hydrogen induced intergranular cracking based on grain boundary…”
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Structural investigation of the stability in temperature of some high entropy alloys as a function of their electronic structure by Calvo-Dahlborg, M., Dahlborg, U., Cornide, J., Mehraban, S., Leong, Z., Hansen, T.C. C, Wunderlich, R.K. K, Goodall, R., Lavery, N.P. P, Brown, S.G.R. G R

“…High Entropy Alloys (HEA) can be classified in three domains according to their e/a and r values, with e/a, the number of itinerant valence electrons and r the…”
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Influence of the electronic polymorphism of Ni on the classification and design of high entropy alloys by Calvo-Dahlborg, M., Dahlborg, U., Brown, S.G.R., Juraszek, J.

“…According to a recent Hume-Rothery approach, the electron concentration, e/a, and the average radius can be used to identify the domain of stability of HEAs…”
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Multiscale multiphysics model for hydrogen embrittlement in polycrystalline nickel by Jothi, S., Croft, T.N., Brown, S.G.R.

“…•We development multiscale multiphysics model to investigate hydrogen embrittlement.•Microstructure features play vital role on stress distribution in…”
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Structural investigation of the stability in temperature of some high entropy / multi major components alloys as a function of their electronic structure by Calvo-Dahlborg, M., Dahlborg, U., Cornide, J., Mehraban, S., Leong, Z., Hansen, T.C., Wunderlich, R.K., Goodall, R., Lavery, N.P., Brown, S.G.R.

“…High Entropy Alloys (HEA) can be classified in three domains according to their e/a and r values, with e/a, the number of itinerant valence electrons and r the…”
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Coupled macroscale-microscale model for hydrogen embrittlement in polycrystalline materials by Jothi, S., Croft, T.N., Brown, S.G.R.

“…Prediction of hydrogen embrittlement within a component requires the influence of several length scales to be accounted for. The loads that affect the rate of…”
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Localized microstructural characterization of a dissimilar metal electron beam weld joint from an aerospace component by Jothi, Sathiskumar, Sebald, Torsten, Davies, H.M., Reese, Eggert D., Brown, S.G.R.

“…Hydrogen induced cold cracking (HICC) and hydrogen embrittlement (HE) are influenced by the microstructural evolution, residual plastic strain (i.e. local…”
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Finite element microstructural homogenization techniques and intergranular, intragranular microstructural effects on effective diffusion coefficient of heterogeneous polycrystalline composite media by Jothi, S., Croft, T.N., Brown, S.G.R., de Souza Neto, E.A.

“…Microstructural intergranular and intragranular effects play a vitally important role in mass transport within heterogeneous polycrystalline composite media…”
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Meso-microstructural computational simulation of the hydrogen permeation test to calculate intergranular, grain boundary and effective diffusivities by Jothi, S., Winzer, N., Croft, T.N., Brown, S.G.R.

“…•Characterized polycrystalline nickel microstructure using EBSD analysis.•Development meso-microstructural model based on real microstructure.•Calculated…”
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Modelling the influence of microstructural morphology and triple junctions on hydrogen transport in nanopolycrystalline nickel by Jothi, Sathiskumar, Croft, T.N., Brown, S.G.R.

“…Hydrogen transport in nanopolycrystalline (NPC) face centred cubic (FCC) nickel has received considerable attention as a result of the material's unique…”
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Bending and twisting friction models in soft-sphere discrete element simulations for static and dynamic problems by Holmes, M.A.J., Brown, R., Wauters, P.A.L., Lavery, N.P., Brown, S.G.R.

“…•DEM model with shear, rolling (bending and twisting) frictional forces is presented.•Improved predictions obtained for a modified bending friction…”
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Computational modeling of creep-based fatigue as a means of selecting lead-free solder alloys by Eckermann, J., Mehmood, S., Davies, H.M., Lavery, N.P., Brown, S.G.R., Sienz, J., Jones, A., Sommerfeld, P.

“…•The creep behavior of lead free solders was successfully simulated for all models.•Corners and interfaces are the areas where solders experience the max…”
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Modelling the relationship between microstructure of Galfan-type coated steel and cut-edge corrosion resistance incorporating diffusion of multiple species by Barnard, N.C., Brown, S.G.R.

“…This paper describes a considerable extension to a previously documented [S.G.R. Brown, N.C. Barnard, 3D computer simulation of the influence of microstructure…”
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