Results 61 to 70 of about 267,967 (278)

Seaweed to Dendrite Transition in Directional Solidification

Physical Review Letters, 2003
We simulate directional solidification using a phase-field model solved with adaptive mesh refinement. For small surface tension anisotropy directed at 45 degrees relative to the pulling direction we observe a crossover from a seaweed to a dendritic morphology as the thermal gradient is lowered, consistent with recent experimental findings.
Provatas, Nikolas, Grant, Martin, Wang, Quanyong, Haataja, Mikko   +3 more
openaire   +4 more sources

Microstructure and mechanical properties of Ni3Al intermetallics prepared by directional solidification electromagnetic cold crucible technique [PDF]

China Foundry, 2017
The present work focused on the Ni3Al-based alloy with a high melting point. The aim of the research is to study the effect of withdrawal rate on the microstructures and mechanical properties of directionally solidified Ni-25Al alloy.
Hong-sheng Ding, Guo-tian Wang, Rui-run Chen   +2 more
doaj   +1 more source

Rapidly Solidified High‐Strength Invar 36 Prepared by Planar‐Flow Melt Spinning

Advanced Engineering Materials, EarlyView.
The Invar 36 alloy was rapidly solidified using the planar‐flow melt‐spinning technique. Ribbon samples with thicknesses ranging from 20 to 160 mm were produced. As the grain size of the ribbon decreased to sub‐micron levels, the hardness increased by more than 2 times.
Bekir Akgül, Mehmet Kul
wiley   +1 more source

Microstructure evolution and mechanical behaviors of alumina-based ceramic shell for directional solidification of turbine blades

Journal of Materials Research and Technology, 2019
The high temperature mechanical behaviors of Al2O3-based ceramic shell for the directional solidification of turbine blades were investigated. Isothermal uniaxial compression tests of ceramic shell samples were conducted on a Gleeble-1500D mechanical ...
Zilin Xu, Jiangwei Zhong, Xianglin Su, Qingyan Xu, Baicheng Liu   +4 more
doaj   +1 more source

Morphology, Transport, and Dynamics of Protein Adsorption in Open‐Cell Metal Foam

Advanced Engineering Materials, EarlyView.
Stainless steel (SS) open‐cell foams are shown to adsorb more protein per unit area than previously reported 316L SS and chromium oxide surfaces under static and flow conditions. An integrated approach combining 3D pore imaging, flow simulation, and protein adsorption experiments characterizes the foam’s performance.
Chinmaya Prerana Inguva, Joseph Lavoie, Afsaneh Rabiei   +2 more
wiley   +1 more source

Capillary-wave description of rapid directional solidification [PDF]

Physical Review E, 2012
A recently introduced capillary-wave description of binary-alloy solidification is generalized to include the procedure of directional solidification. For a class of model systems a universal dispersion relation of the unstable eigenmodes of a planar steady-state solidification front is derived, which readjusts previously known stability considerations.
Korzhenevskii, Alexander L., Bausch, Richard, Schmitz, Rudi   +2 more
openaire   +3 more sources

Effect of melt flow on dendritic growth in AlSi7-based alloys during directional solidification

, 2022
S.335-338High-strength automotive components are often made of AlSi7-based alloys. A very challenging problem with aluminium casting is the influence of melt flow during solidification, because it affects the microstructure formation and therefore the ...
Dagner, J., Sturz, L., Zimmermann, G., Walterfang, M.   +3 more
core   +1 more source

Influence of directional solidification parameters on the amount of quasicrystalline phase of an AlCuFe alloy

Journal of Alloys and Metallurgical Systems
In this work, a casting processing route via unidirectional solidification is proposed, where the severity of cooling can be increased to maximize the amount of quasicrystalline phase.
Thayza Pacheco dos Santos Barros, Rafael E. Caluête, Aline Karla Barbosa da Silva, Danniel Ferreira de Oliveira, Francisco Riccelly Pereira Feitosa, Bruno Alessandro Silva Guedes de Lima, Danielle Guedes de Lima   +6 more
doaj   +1 more source

Effects of Mg on Microstructure and Solidification of a Hypereutectic Zn–8 wt.%Al Alloy

Advanced Engineering Materials, EarlyView.
An appreciable set of results involving thermal data, microstructure, chemical composition, and microstructural growth laws is reported for ZnAlMg alloys. Such results demonstrate that ZnAlMg alloys have high potential for applications in automotive self‐lubricating components, batteries, and electrical systems.
Raí B. de Sousa, Jeverton L. Paixão, Daylla S. Silva, Bruno S. Sobral, Mucio D. de Medeiros, José E. Spinelli, Bismarck L. Silva   +6 more
wiley   +1 more source

Directional solidification: Transition from cells to dendrites [PDF]

Physical Review Letters, 1989
The evolution of cells and dendrites on a solidification front is analyzed numerically by a Green's-function method. We obtain a consistent picture of the pattern-forming processes in the whole experimentally accessible range of the phase-diagram cell spacing versus growth rate.
Müller-Krumbhaar, H., Misbah, C., Saito, Y.   +2 more
openaire   +3 more sources