Search Results - "RINGER, S. P"

Analysis of strengthening in AA6111 during the early stages of aging: Atom probe tomography and yield stress modelling by Marceau, R.K.W., de Vaucorbeil, A., Sha, G., Ringer, S.P., Poole, W.J.

“…In this work, a series of aging treatments has been conducted on AA6111 alloy samples for various times at ambient temperature (so-called natural aging) and at…”
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Solute clustering in Al–Cu–Mg alloys during the early stages of elevated temperature ageing by Marceau, R.K.W., Sha, G., Ferragut, R., Dupasquier, A., Ringer, S.P.

“…The evolution of atomistic-level nanostructure during the early stages of elevated temperature ageing of rapid hardening (RH) Al–Cu–Mg alloys has been…”
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Phase Transition between Nanostructures of Titanate and Titanium Dioxides via Simple Wet-Chemical Reactions by Zhu, H. Y, Lan, Y, Gao, X. P, Ringer, S. P, Zheng, Z. F, Song, D. Y, Zhao, J. C

“…Titanate nanofibers of various sizes and layered structure were prepared from inorganic titanium compounds by hydrothermal reactions. These fibers are…”
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Influence of equal-channel angular pressing on precipitation in an Al–Zn–Mg–Cu alloy by Sha, G., Wang, Y.B., Liao, X.Z., Duan, Z.C., Ringer, S.P., Langdon, T.G.

“…Processing by equal-channel angular pressing (ECAP) affects the morphology of η precipitates in an Al–Zn–Mg–Cu (Al-7136) alloy. It is shown by transmission…”
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Solute nanostructures and their strengthening effects in Al–7Si–0.6Mg alloy F357 by Sha, G., Möller, H., Stumpf, W.E., Xia, J.H., Govender, G., Ringer, S.P.

“…The solute nanostructures formed in the primary α-Al grains of a semi-solid metal cast Al–7Si–0.6Mg alloy (F357) during ageing at 180 °C, and the age-hardening…”
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Evolution of solute clustering in Al–Cu–Mg alloys during secondary ageing by Marceau, R.K.W., Sha, G., Lumley, R.N., Ringer, S.P.

“…The evolution of an atomistic-level nanostructure during the early stages of secondary ageing of a rapid hardening Al–1.1Cu–1.7Mg (at.%) alloy has been…”
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TDDFT Study of the Optical Excitation of Nucleic Acid Bases‑C60 Complexes by Tawfik, Sherif Abdulkader, Cui, X. Y, Ringer, S. P, Stampfl, C

“…The potential of C60 as a nucleic acid base (NAB) optical sensor is theoretically explored. We investigate the adsorption of four NABs, namely, adenine,…”
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Near-Perfect Spin Filtering and Negative Differential Resistance in an Fe(II)S Complex by Tawfik, Sherif Abdulkader, Weston, Leigh, Cui, X. Y, Ringer, S. P, Stampfl, C

“…Density functional theory and nonequilibrium Green’s function calculations have been used to explore spin-resolved transport through the high-spin state of an…”
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The role of stacking faults and twin boundaries in grain refinement of a Cu–Zn alloy processed by high-pressure torsion by Wang, Y.B., Liao, X.Z., Zhao, Y.H., Lavernia, E.J., Ringer, S.P., Horita, Z., Langdon, T.G., Zhu, Y.T.

“…A recent model developed to predict the smallest grain sizes obtainable by severe plastic deformation has worked well for materials with medium to high…”
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Bistable Magnetism and Potential for Voltage-Induced Spin Crossover in Dilute Magnetic Ferroelectrics by Weston, L, Cui, X Y, Ringer, S P, Stampfl, C

“…A first-principles investigation into the magnetic ferroelectric PbTi(1-x)Co(x)O(3) has revealed a bi-stable magnetic system with strong spin-lattice coupling…”
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High On/Off Conductance Switching Ratio via H‑Tautomerization in Quinone by Tawfik, Sherif Abdulkader, Cui, X. Y, Ringer, S. P, Stampfl, C

“…Through first-principles electron transport simulations using the nonequilibrium Green’s function formalism together with density functional theory, we show…”
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Introducing a strain-hardening capability to improve the ductility of bulk metallic glasses via severe plastic deformation by Wang, Y.B., Qu, D.D., Wang, X.H., Cao, Y., Liao, X.Z., Kawasaki, M., Ringer, S.P., Shan, Z.W., Langdon, T.G., Shen, J.

“…The great technological potential for bulk metallic glasses (BMGs) arises primarily because of their superior mechanical properties. To realize this potential,…”
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Effect of niobium clustering and precipitation on strength of an NbTi-microalloyed ferritic steel by Kostryzhev, A.G., Al Shahrani, A., Zhu, C., Cairney, J.M., Ringer, S.P., Killmore, C.R., Pereloma, E.V.

“…The microstructure–property relationship of an NbTi-microalloyed ferritic steel was studied as a function of thermo-mechanical schedule using a Gleeble 3500…”
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Effect of Al and Gd Solutes on the Strain Rate Sensitivity of Magnesium Alloys by Stanford, N., Sabirov, I., Sha, G., La Fontaine, A., Ringer, S. P., Barnett, M. R.

“…Pure magnesium and two binary alloys, Mg-1 wt pct Al and Mg-1.4 wt pct Gd, have been prepared with comparable grain sizes and textures. The alloys have been…”
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On the multiplicity of field evaporation events in atom probe: A new dimension to the analysis of mass spectra by Yao, L., Gault, B., Cairney, J.M., Ringer, S.P.

“…We introduce a filtering technique for atom probe microscopy data that is based on the multiplicity of detector events for each atom. We demonstrate that the…”
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A visualization of shear strain in processing by high-pressure torsion by Cao, Y., Wang, Y. B., Alhajeri, S. N., Liao, X. Z., Zheng, W. L., Ringer, S. P., Langdon, T. G., Zhu, Y. T.

“…Optical microscopy was used to examine the shear strain imposed in duplex stainless steel disks during processing by high-pressure torsion (HPT). The results…”
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Characterization of the Bake-hardening Behavior of Transformation Induced Plasticity and Dual-phase Steels Using Advanced Analytical Techniques by Timokhina, Ilana B., Pereloma, E. V., Ringer, S. P., Zheng, R. K., Hodgson, P. D.

“…The bake-hardening (BH) behavior of TRansformation Induced Plasticity (TRIP) and Dual-Phase (DP) steels after intercritical annealing (IA) has been studied…”
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Applied stress controls the production of nano-twins in coarse-grained metals by Cao, Y., Wang, Y. B., Liao, X. Z., Kawasaki, M., Ringer, S. P., Langdon, T. G., Zhu, Y. T.

“…We present evidence that the level of the applied stress plays a critical role in deformation twinning in face-centred cubic alloys. While conventional cold…”
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Precipitation reactions in Al–4.0Cu–0.3Mg (wt.%) alloy by Ringer, S.P., Sofyan, B.T., Prasad, K.S., Quan, G.C.

“…Analytical transmission electron microscopy was used to characterize precipitation processes in a model Al–4.0Cu–0.3Mg (wt.%) alloy aged at 200°C. The…”
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Microstructure and mechanical properties of Mg–6Zn–xCu–0.6Zr (wt.%) alloys by Zhu, H.M., Sha, G., Liu, J.W., Wu, C.L., Luo, C.P., Liu, Z.W., Zheng, R.K., Ringer, S.P.

“…In this paper, we report the microstructures and mechanical properties of a new quaternary Mg–6Zn–xCu–0.6Zr alloys (x=0, 0.5, 1.0 and 2.0wt.%). The alloy…”
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