Results 251 to 260 of about 502,495 (311)

Directional solidification of NiAlCrFe alloy

Scripta Materialia, 1997
During directional solidification of engineering alloys, the formation of cellular and dendritic structures with concomitant microsegregation and microporosity is of great interest since these solidification features significantly influence mechanical properties.
J. Lapin, A. Klimová, R. Velísek, M. Kursa   +3 more
openaire   +1 more source

Striation in Bridgman directional solidification

Journal of Crystal Growth, 1998
Abstract Time-dependent behaviours induced by the solutal convection appearing above a solidification front are numerically investigated. The system under study corresponds to the upward Bridgman configuration for the directional solidification of the Pb–30% Tl alloy.
R Guérin, C Le Marec, P Haldenwang
openaire   +1 more source

Convective instabilities during directional solidification

Journal of Thermophysics and Heat Transfer, 1989
Results of a ground-based experimental program that supports a low-gravity space processing Spacelab experiment are reported. The phenomena which precipitate pluming and thus freckling in a metal alloy are studied in detail using a metal analog (ammonium chloride and water) and the sequential events leading to massive channeling and convection are ...
T. D. McCay, M. H. McCay, S. A. Lowry, L. M. Smith   +3 more
openaire   +1 more source

Pattern formation in directional solidification

Physical Review B, 1983
The one-sided model for a nearly planar solidification front advancing at steady velocity is studied. The model neglects impurity diffusion in the solid; the interface is stabilized by the imposition of a thermal gradient. The front, located at ${z}_{s}={z}_{s}(x,y)$, is described by the coefficients ${\ensuremath{\epsilon}}_{\stackrel{\ensuremath ...
openaire   +1 more source

Patterns in Directional Solidification

1990
There have recently been a set of new phenomena observed in the directional solidification of liquid crystals, including travelling waves and spatial period doubling. We apply the integro-differential method to the liquid crystal system of Simon et.al. and show that we can reproduce the period doubling state.
openaire   +1 more source

Pattern selection in directional solidification

Physical Review B, 1983
The equations of motion for a slightly deformed planar solidification front advancing with a steady velocity and stabilized by a thermal gradient are integrated numerically. The regime where the interface develops a cellular pattern is analyzed. We study the case where the system is subjected to Gaussian white noise.
openaire   +1 more source

Directional Solidification

2023
Li Shuangming, Xu Kuangdi
openaire   +1 more source

Deep Cells in Directional Solidification

1991
The deep cells regime in directional solidification of binary mixtures1 is currently under great investigation.
Alain Karma, Pierre Pelcé
openaire   +1 more source

Microstructure, Crystallographic Orientation and Mechanical Property in AlCoCrFeNi2.1 Eutectic High-Entropy Alloy Under Magnetic Field-Assisted Directional Solidification

Metallurgical and Materials Transactions. A, 2020
Jiantao Wang, Zhipeng Long, P. Jiang, Y. Fautrelle, Xi Li   +4 more
semanticscholar   +1 more source

Asymptotic dynamics in directional solidification

2008
We study a strongly nonlinear equation describing the long-wave asymptotic behaviour of rapid directional solidification with weak convective coupling. Taking into account kinetic and disequilibrium effects in the basic equation, we are able to identify various nontrivial integrable subproblems that are absent in previous equations derived for this ...
Klaus Kassner, Philippe Metzener
openaire   +1 more source