In situ observation of interaction between grain boundaries during directional solidification of Si

2018 ◽  
Vol 148 ◽  
pp. 37-41 ◽  
Author(s):  
Lu-Chung Chuang ◽  
Kensaku Maeda ◽  
Haruhiko Morito ◽  
Keiji Shiga ◽  
Wolfram Miller ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Directional Solidification ◽  
In Situ Observation

In Situ Observation of Directional Solidification in High Gravity

1997 ◽  
pp. 93-108
Author(s):  
Y. Inatomi ◽  
O. Kitajima ◽  
W. Huang ◽  
K. Kuribayashi
Keyword(s):  
Directional Solidification ◽  
In Situ Observation ◽  
High Gravity

scholarly journals A zone melting device for the in situ observation of directional solidification using high-energy synchrotron x rays

2020 ◽  
Vol 91 (9) ◽  
pp. 093901
Author(s):  
C. Gombola ◽  
G. Hasemann ◽  
A. Kauffmann ◽  
I. Sprenger ◽  
S. Laube ◽  
...  
Keyword(s):  
Directional Solidification ◽  
High Energy ◽  
Zone Melting ◽  
In Situ Observation ◽  
X Rays

In-situ observation of solid-liquid interface during directional solidification of succinonitrile and pivalic acid

2005 ◽  
Vol 16 (1-4) ◽  
pp. 107-110
Author(s):  
A. P. Shpak ◽  
O. P. Fedorov ◽  
E. L. Zhivolub ◽  
Y. J. Bersudskyy ◽  
O. V. Shuleshova
Keyword(s):  
Directional Solidification ◽  
Pivalic Acid ◽  
Liquid Interface ◽  
In Situ Observation ◽  
Solid Liquid Interface ◽  
Solid Liquid

scholarly journals Cellular Automaton Modeling of Silicon Facet Formation during Directional Solidification

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 399
Author(s):  
Jia Wang ◽  
Ri Li ◽  
Ning Li ◽  
Wenbo Yan ◽  
Wang Ma ◽  
...  
Keyword(s):  
Cellular Automaton ◽  
Directional Solidification ◽  
Interfacial Energy ◽  
Model Simulation ◽  
Negative Temperature ◽  
In Situ Observation ◽  
Heat Accumulation ◽  
Equilibrium Shapes ◽  
Facet Formation

Silicon facet formation during directional solidification is simulated by cellular automaton (CA) modeling in which anisotropic interfacial energy and kinetics are considered. Numerical simulations were performed with different anisotropy strengths of interfacial energy and they show good agreement with analytical equilibrium shapes obtained by the Gibbs-Thomson equation. We also compare our results of anisotropic kinetics with in situ observation experiments and the results of the phase model to verify the accuracy of our model. Simulation results of facet formation show that perturbation is promoted to the corner by the negative temperature gradient of the interface and the heat accumulation location leads to the disappearance of small corners.

In-Situ Observation of Microcracking in a Tial-Cr-V Alloy Under Compressive Stress

1994 ◽  
Vol 364 ◽  
Author(s):  
Z. J. Pu ◽  
Y. Q. Liu ◽  
K. H. Wu
Keyword(s):  
Grain Boundaries ◽  
Compressive Stress ◽  
Lamellar Microstructure ◽  
Compressive Deformation ◽  
In Situ Observation ◽  
Duplex Structure ◽  
Entire Process ◽  
Fully Lamellar ◽  
Electronic Microscope

AbstractThe entire process of microcrack nucleation in a TiAl-Cr-V alloy with different microstructures is observed in situ by a scanning electronic microscope (SEM) during compressive deformation. The main results are summarized as follows: (1) In the fully lamellar microstructure, the microcracks nucleate mainly at the lamellar grain boundaries between soft-orientation and hard-orientation grains. (2) In the Widmanstatten structure, the microcracks distribute mainly at the intersection between two Widmanstatten plates. (3) In the duplex structure, the microcracks form at the lamella/ lamella and lamella/gamma boundaries. (4) In the nearly gamma structure, microcracks nucleate at gamma/gamma grain boundaries.

In Situ Observation of Melting and Solidification

1999 ◽  
Vol 589 ◽  
Author(s):  
H. Saka ◽  
S. Arai ◽  
S. Muto ◽  
H. Miyai ◽  
S. Tsukimoto
Keyword(s):  
Electron Microscope ◽  
Grain Boundaries ◽  
Eutectic Alloy ◽  
Atomic Structure ◽  
In Situ Observation ◽  
Metallic Materials ◽  
Experimental Image ◽  
In Situ Heating ◽  
Melting And Solidification

AbstractMelting and solidification of metallic materials have been observed directly using an in-situ heating experiment in an electron microscope. In pure Al melting initiates at the surface, while in a eutectic alloy melting initiates preferentially at eutectic interfaces and grain boundaries. The atomic structure of a solidliquid interface was identified by comparing an experimental image with computed ones.

The in situ observation of faceted dendrite growth during the directional solidification of GaSb

2019 ◽  
Vol 168 ◽  
pp. 56-60 ◽  
Author(s):  
Keiji Shiga ◽  
Masato Kawano ◽  
Kensaku Maeda ◽  
Haruhiko Morito ◽  
Kozo Fujiwara
Keyword(s):  
Directional Solidification ◽  
Dendrite Growth ◽  
In Situ Observation ◽  
Faceted Dendrite
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