Search Results - "Browne, D.J."

In situ investigation of the Columnar-to-Equiaxed Transition during directional solidification of Al–20 wt.%Cu alloys on Earth and in microgravity by Ngomesse, F., Reinhart, G., Soltani, H., Zimmermann, G., Browne, D.J., Sillekens, W., Nguyen-Thi, H.

“…Solidification experiments on Al–20 wt.%Cu alloys with grain refiner were performed in a Bridgman-type furnace to investigate the impact of gravity-driven…”
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Mechanical and thermal stability of Bulk Metallic Glass alloys identified as candidates for space mechanism applications by Murphy, A.G., Meagher, P., Norman, A., Browne, D.J.

“…[Display omitted] •Bulk amorphous alloy compositions are identified as potential materials for applications in space.•They may be suited to gear and flexure…”
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A front-tracking model to predict solidification macrostructures and columnar to equiaxed transitions in alloy castings by McFadden, S., Browne, D.J.

“…The solidified grain structure (macrostructure) of castings is predicted by process simulation using a newly extended front-tracking technique which models the…”
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The influence of cooling conditions on grain size, secondary phase precipitates and mechanical properties of biomedical alloy specimens produced by investment casting by Kaiser, R., Williamson, K., O’Brien, C., Ramirez-Garcia, S., Browne, D.J.

“…The objective of this work was to investigate and evaluate the effect of the cooling environment on the microstructure, secondary phase precipitates and…”
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Natural convection and columnar-to-equiaxed transition prediction in a front-tracking model of alloy solidification by BANASZEK, J, MCFADDEN, S, BROWNE, D. J, STURZ, L, ZIMMERMANN, G

“…A meso-scale front-tracking model (FTM) of nonequilibrium binary alloy dendritic solidification has been extended to incorporate Kurz, Giovanola, and Trivedi…”
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S.17.03 An epidemiological and long-term outcome perceptive on antipsychotic polypharmacy by Waddington, J.L, Browne, D.J, Scully, P.J

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Combined genomic evaluation of Australian Merino and Dohne Merino sheep populations by Wicki, M., Browne, D.J. J, Gurman, P.M., Raoul, Jérôme, Legarra, Andres, Swan, A.A.

“…BackgroundThe Dohne Merino sheep was introduced to Australia from South Africa in the 1990s. It was primarily used in crosses with the Merino breed sheep to…”
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Elimination of porosity in bulk metallic glass castings using hot isostatic pressing by Srivastava, A.P., Tong, M., Ștefanov, T., Browne, D.J.

“…This study presents design and implementation of a systematic method to remove the pores in as-cast bulk metallic glass using hot isostatic pressing, without…”
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Equiaxed dendritic solidification and grain refiner potency characterised through in situ X-radiography by Murphy, A.G., Mirihanage, W.U., Browne, D.J., Mathiesen, R.H.

“…Results of near-isothermal equiaxed solidification experiments on the Al–Cu system performed in situ with laboratory-based radiography are presented. The…”
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Multiple relaxation processes in Zr 44 Cu 40 Al 8 Ag 8 bulk metallic glass by Srivastava, A.P., Ștefanov, T., Srivastava, D., Browne, D.J.

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Modelling the creation and destruction of columnar and equiaxed zones during solidification and melting in multi-pass welding of steel by Duggan, G., Tong, M., Browne, D.J.

“…[Display omitted] •Multi-pass welding is modelled using a front tracking formulation.•Simultaneous melting and solidification is simulated, employing a one…”
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Combined in situ X-ray radiographic observations and post-solidification metallographic characterisation of eutectic transformations in Al–Cu alloy systems by Murphy, A.G., Browne, D.J., Mirihanage, W.U., Mathiesen, R.H.

“…In this study thin Al–Cu hypoeutectic alloys were mounted in a Bridgman furnace and solidified near isothermally from above the liquidus to below the eutectic…”
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Direct observation of spatially isothermal equiaxed solidification of an Al–Cu alloy in microgravity on board the MASER 13 sounding rocket by Murphy, A.G., Mathiesen, R.H., Houltz, Y., Li, J., Lockowandt, C., Henriksson, K., Melville, N., Browne, D.J.

“…For the first time, isothermal equiaxed solidification of a metallic alloy has been observed in situ in space, providing unique benchmark experimental data…”
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Multiple relaxation processes in Zr44Cu40Al8Ag8 bulk metallic glass by Srivastava, A.P., Ștefanov, T., Srivastava, D., Browne, D.J.

“…In this study, relaxation dynamics of Zr44Cu40Al8Ag8 Bulk Metallic Glass (BMG) have been studied using mechanical spectroscopy. This alloy has manifested a…”
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XRMON-SOL: Isothermal equiaxed solidification of a grain refined Al–20wt%Cu alloy by Murphy, A.G., Mathiesen, R.H., Houltz, Y., Li, J., Lockowandt, C., Henriksson, K., Zimmermann, G., Melville, N., Browne, D.J.

“…A novel isothermal solidification furnace (XRMON-SOL) has been developed for operation under terrestrial and microgravity conditions, using aluminium-based…”
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XRMON-GF: A novel facility for solidification of metallic alloys with in situ and time-resolved X-ray radiographic characterization in microgravity conditions by Nguyen-Thi, H., Reinhart, G., Salloum Abou Jaoude, G., Mathiesen, R.H., Zimmermann, G., Houltz, Y., Voss, D., Verga, A., Browne, D.J., Murphy, A.G.

“…As most of the phenomena involved during the growth of metallic alloys from the melt are dynamic, in situ and time-resolved X-ray imaging should be retained as…”
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Simulation of international space station microgravity directional solidification experiments on columnar-to-equiaxed transition by Mirihanage, W.U., Browne, D.J., Zimmermann, G., Sturz, L.

“…It is well known that gravity affects solidification of alloys due to the convective effects it induces. As a result, different outcomes are expected if…”
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Inverse estimate of heat flux on a plasma discharge tube to steady-state conditions using thermocouple data and a radiation boundary condition by de Faoite, D, Browne, D J, Del Valle Gamboa, J I, Stanton, K T

“…The heat flux incident upon the inner surface of a plasma discharge tube during a helicon plasma discharge was estimated using an inverse method. Temperature…”
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Thermo-structural modelling of a plasma discharge tube for electric propulsion by de Faoite, D., Browne, D.J., Del Valle Gamboa, J.I., Stanton, K.T.

“…•Thermo-structural analyses were performed for an electric propulsion space thruster.•Thermal stresses arise primarily from mismatches in thermal expansion…”
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Non-steady 3D dendrite tip growth under diffusive and weakly convective conditions by Mirihanage, W.U., Falch, K.V., Casari, D., McFadden, S., Browne, D.J., Snigireva, I., Snigirev, A., Li, Y.J., Mathiesen, R.H.

“…Three dimensional α-Al dendrite tip growth under varying solute gradients in an Al-Cu-Si alloy melt has been studied using real time synchrotron X-ray imaging…”
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