Results 31 to 40 of about 85,735 (301)

Preparation of Twinned Dendrites of Al-Zn Alloy with High Zn Content [PDF]

Archives of Metallurgy and Materials, 2018
Twinned dendrites in Al-Zn alloy with high Zn content (40% wt.%) were successfully prepared by directional solidification. At different directional solidification rates (1000 and 1500 μm/s), microstructures and growth orientation variations of Al twinned
K. Gao, W. Song, L. Fan, Y. Ding, X. Guo, R. Zhang   +5 more
doaj   +1 more source

Phase Field Model for Three-Dimensional Dendritic Growth with Fluid Flow

, 2001
We study the effect of fluid flow on three-dimensional (3D) dendrite growth using a phase-field model on an adaptive finite element grid. In order to simulate 3D fluid flow, we use an averaging method for the flow problem coupled to the phase-field ...
A. A. Wheeler, A. Karma, A. N. Brooks, C. Beckermann, D. A. Kessler, D. Kessler, E. Ben-Jacob, J. A. Dantzig, J. Langer, Jonathan A. Dantzig, Jun-Ho Jeong, L. V. Kale, M. Bhandarkar, N. Provatas, N. Provatas, Nigel Goldenfeld, P. Bouissou, P. M. Gresho, S. Chen, S. H. Davis, W. W. Mullins, X. Mikic, Y.-T. Kim, Y.-W. Lee   +23 more
core   +1 more source

Phase-Field Formulation for Quantitative Modeling of Alloy Solidification [PDF]

, 2001
A phase-field formulation is introduced to simulate quantitatively microstructural pattern formation in alloys. The thin-interface limit of this formulation yields a much less stringent restriction on the choice of interface thickness than previous ...
A. A. Wheeler, A. A. Wheeler, A. Karma, A. Karma, A. Karma, Alain Karma, G. B. McFadden, G. Caginalp, G. Caginalp, J. A. Warren, J. B. Collins, J. S. Langer, J. Tiaden, M. Plapp, M. Plapp, N. Provatas, N. Provatas, P. C. Fife, P. G. Saffman, R. F. Almgren, R. Folch, S. Osher, S.-G. Kim, W. Kurz, Y.-T. Kim   +24 more
core   +1 more source

Continuous 1D single crystal growth with high aspect ratio by oriented aggregation of dendrite

Communications Materials
Continuous 1D growth of crystals is among one of the long-standing goals in material science. Classical generic methods for 1D crystal growth such as guided disposition restrict side growth by external bounding, and become difficult as the aspect ratio ...
Quan Wan, Maoqi Li, Yuhao Zhou, Meng Zhang, Zongpu Xu, Jie Wang, Yajun Shuai, Shuxu Yang, Mingying Yang   +8 more
doaj   +1 more source

Numerical simulation of the effect of hypergravity on the dendritic growth characteristics of aluminum alloys

Heliyon
The cellular automata-lattice Boltzmann method is used to simulate the dendritic growth process of aluminum alloys under the action of hypergravity by performing coupling heat and mass transfer, solidification and flow.
Yanying Zhang, Ruifeng Dou, Junsheng Wang, Xunliang Liu, Zhi Wen   +4 more
doaj   +1 more source

On the role of confinement on solidification in pure materials and binary alloys

, 2006
We use a phase-field model to study the effect of confinement on dendritic growth, in a pure material solidifying in an undercooled melt, and in the directional solidification of a dilute binary alloy.
B. P. Athreya, Gill WN, Huang S.-C, Ivantsov GP, J. A. Dantzig, Kurz W, R. Trivedi, S. Liu, Sémoroz A, Temkin DE   +9 more
core   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Phase-field simulation for anisotropic dendrite growth in Mg-3wt.%Zn alloy

Journal of Materials Research and Technology
The anisotropy interfacial energy changes the growth tendency of dendrites in different directions during solidification, when the growth tendency in a specific direction appears or disappears, the transition of dendrite orientation will happen.
Kaixin Sun, Weipeng Chen, Jiaqi Pei, Hua Hou, Yuhong Zhao   +4 more
doaj   +1 more source

Adaptive Mesh Refinement Computation of Solidification Microstructures using Dynamic Data Structures

, 1998
We study the evolution of solidification microstructures using a phase-field model computed on an adaptive, finite element grid. We discuss the details of our algorithm and show that it greatly reduces the computational cost of solving the phase-field ...
Almgren, Almgren, Ben-Jacob, Ben-Jacob, Braun, Brener, Brener, Brower, Caginalp, Caginalp, Caginalp, Chen, Collins, Cook, Elder, Fabbri, Glicksman, Glicksman, Horvay, Huang, Ivantsov, Jonathan Dantzig, Juric, Karma, Karma, Kessler, Kessler, Kobayashi, Langer, Langer, Langer, Meiron, Neeman, Nigel Goldenfeld, Nikolas Provatas, Palle, Provatas, Provatas, Schmidt, Shephard, Temkin, Wang, Warren, Wheeler, Zienkiewicz   +44 more
core   +2 more sources

Reduced vascular leakage correlates with breast carcinoma T regulatory cell infiltration but not with metastatic propensity

Molecular Oncology, EarlyView.
A mouse model for vascular normalization and a human breast cancer cohort were studied to understand the relationship between vascular leakage and tumor immune suppression. For this, endothelial and immune cell RNAseq, staining for vascular function, and immune cell profiling were employed.
Liqun He, Chiara Testini, Neda Hekmati, Altea Bonello, Aglaia Schiza, Emmanuel Nwadozi, Mia Phillipson, Carina Strell, Michael Welsh   +8 more
wiley   +1 more source