Search Results - "Weihs, T.P."

Deformation induced solute segregation and G.P. zone formation in Mg-Al and Mg-Zn binary alloys by Sasaki, T.T., Lin, J.Y., Yi, P., Li, Z.H., Prameela, S.E., Park, A., Lipkin, E., Lee, A., Falk, M.L., Weihs, T.P., Hono, K.

“…A dispersion of Guinier Preston (G.P.) zones yields attractive mechanical properties in wrought magnesium alloys. However, the precipitation of G.P. zones has…”
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The effect of prism orientation on the indentation testing of human molar enamel by Braly, A, Darnell, L.A, Mann, A.B, Teaford, M.F, Weihs, T.P

“…Abstract Recent nanoindentation studies have demonstrated that the hardness and Young's modulus of human molar enamel decreases by more than 50% on moving from…”
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Nanoindentation mapping of the mechanical properties of human molar tooth enamel by Cuy, J.L., Mann, A.B., Livi, K.J., Teaford, M.F., Weihs, T.P.

“…The mechanical behavior of dental enamel has been the subject of many investigations. Initial studies assumed that it was a more or less homogeneous material…”
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Investigating the effect of applied pressure on reactive multilayer foil joining by Wang, J., Besnoin, E., Knio, O.M., Weihs, T.P.

“…This paper describes the effect of applied pressure on reactive joining of stainless steel specimens and Al alloy specimens using nanostructured Al/Ni foils…”
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Joining bulk metallic glass using reactive multilayer foils by Swiston, A.J., Hufnagel, T.C., Weihs, T.P.

“…We have welded a zirconium-based bulk amorphous alloy using Ni/Al multilayer foils that are capable of producing a self-propagating exothermic reaction. The…”
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Optical calibration for nanocalorimeter measurements by Swaminathan, P., Burke, B.G., Holness, A.E., Wilthan, B., Hanssen, L., Weihs, T.P., LaVan, D.A.

“…► Developed an optical calibration procedure for nanocalorimeters. ► Validated the optical calibration approach by measuring the melting temperature of an…”
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Stability in thin film multilayers and microlaminates: the role of free energy, structure, and orientation at interfaces and grain boundaries by Lewis, A.C., Josell, D., Weihs, T.P.

“…In polycrystalline multilayer systems, the free energies of the interfaces and grain boundaries will determine the relative stability of each layer as well as…”
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The mechanisms of plastic strain accommodation during the high strain rate collapse of corrugated Ni-Al laminate cylinders by Olney, K.L., Chiu, P.H., Higgins, A., Serge, M., Weihs, T.P., Fritz, G.M., Stover, A.K., Benson, D.J., Nesterenko, V.F.

“…The Thick-Walled Cylinder method was used on corrugated Ni-Al reactive laminates to examine how their mesostructures accommodate large strain, high strain rate…”
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Self-propagating formation reactions in Nb/Si multilayers by Reiss, M.E., Esber, C.M., Van Heerden, D., Gavens, A.J., Williams, M.E., Weihs, T.P.

“…Structural silicides with promising high temperature mechanical properties can be fabricated into near-net shapes using self-propagating high-temperature…”
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The effect of strain rate on the microstructural evolution of pure Mg during ECAE by Krywopusk, N.M., Kecskes, L.J., Weihs, T.P.

“…Samples of 99.9% pure, as-cast magnesium (Mg) were processed by Equal Channel Angular Extrusion (ECAE) using up to four passes of the BC route, a temperature…”
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An X-ray study of residual stresses and bending stresses in free-standing Nb/Nb5Si3 microlaminates by SHANG, C. H, VAN HEERDEN, D, GAVENS, A. J, WEIHS, T. P

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Microstructural characterization of pure Mg and AZ31B processed by ECAE by Krywopusk, N.M., Kecskes, L.J., Weihs, T.P.

“…Samples of 99.9% pure magnesium (Mg) and one of its common alloys, AZ31B, were processed using Equal Channel Angular Extrusion (ECAE) at 250 °C and 200 °C,…”
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Combustion in reactive multilayer Ni/Al nanofoils: Experiments and molecular dynamic simulation by Rogachev, A.S., Vadchenko, S.G., Baras, F., Politano, O., Rouvimov, S., Sachkova, N.V., Grapes, M.D., Weihs, T.P., Mukasyan, A.S.

“…A comparative study, including experiments and molecular dynamic simulation, of the combustion waves in the Ni/Al multilayer reactive nanofoils reveals unknown…”
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Evaluation of vapor deposited Nb/Nb5Si3 microlaminates by VAN HEERDEN, D, GAVENS, A. J, FOECKE, T, WEIHS, T. P

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In situ TEM observations of high-strain-rate deformation and fracture in pure copper by Voisin, T., Grapes, M.D., Li, T.T., Santala, M.K., Zhang, Y., Ligda, J.P., Lorenzo, N.J., Schuster, B.E., Campbell, G.H., Weihs, T.P.

“…[Display omitted] The plastic deformation of polycrystalline metals at high strain rates is controlled by the way defects (dislocations and twins) nucleate,…”
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Properties of reactive Al:Ni compacts fabricated by radial forging of elemental and alloy powders by Gibbins, J.D., Stover, A.K., Krywopusk, N.M., Woll, K., Weihs, T.P.

“…We explore rotary swaging of powders into solid compacts as an inexpensive means of producing reactive materials with refined microstructures and improved…”
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Hardness, ductility, and thermal processing of Cu/Zr and Cu/CuZr nanoscale multilayer foils by Weihs, T.P., Barbee, T.W., Wall, M.A.

“…The hardness, ductility, and thermal processing of Cu/Zr and Cu/CuZr multilayers were investigated by indenting, bending, and heating a series of…”
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Fabrication and mechanical characterization of 3D woven Cu lattice materials by Zhang, Y., Ha, S., Sharp, K., Guest, J.K., Weihs, T.P., Hemker, K.J.

“…3D metallic lattices designed to have two distinctly different material architectures have been woven with metallic Cu wires. A vacuum soldering technique was…”
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Direct characterization of phase transformations and morphologies in moving reaction zones in Al/Ni nanolaminates using dynamic transmission electron microscopy by Kim, J.S., LaGrange, T., Reed, B.W., Knepper, R., Weihs, T.P., Browning, N.D., Campbell, G.H.

“…► Fast phase transformations are examined in Al/Ni reactive nanolaminates. ► Results visible only by dynamic transmission electron microscopy at ns resolution…”
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Mechanical fabrication of reactive metal laminate powders by Stover, A. K., Krywopusk, N. M., Gibbins, J. D., Weihs, T. P.

“…A new mechanical method for creating reactive laminate powders has been developed using a two-step process; in the first step bulk reactive materials are…”
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