scholarly journals Solid-liquid interface morphology of white carbide eutectic during directional solidification

2017 ◽  
Vol 62 (1) ◽  
pp. 365-368 ◽  
Author(s):  
M. Trepczyńska-Łent
Keyword(s):  
Longitudinal Section ◽  
Argon Atmosphere ◽  
Liquid Interface ◽  
Interface Morphology ◽  
Directionally Solidified ◽  
Constant Temperature Gradient ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Scanning Electron ◽  
Made In

AbstractIn this paper the analysis of solid-liquid interface morphology in white carbide eutectic was made. In a vacuum Bridgman-type furnace, under an argon atmosphere, directionally solidified sample of Fe - C alloy was produced. The pulling rate was v = 125 μm/s (450 mm/h) and constant temperature gradient G = 33.5 K/mm. The microstructure of the sample was frozen. The microstructure of the sample was examined on the longitudinal section using an light microscope and scanning electron microscope.

Microstructure and Solid/Liquid Interface Evolutions of Directionally Solidified Fe-Al-Ta Eutectic Alloy

2019 ◽  
Vol 34 (3) ◽  
pp. 656-661 ◽  
Author(s):  
Chunjuan Cui ◽  
Songyuan Wang ◽  
Meng Yang ◽  
Haijun Su ◽  
Yagang Wen ◽  
...  
Keyword(s):  
Eutectic Alloy ◽  
Liquid Interface ◽  
Directionally Solidified ◽  
Solid Liquid Interface ◽  
Solid Liquid

Influence of initial solid–liquid interface morphology on further microstructure evolution during directional solidification

2012 ◽  
Vol 110 (2) ◽  
pp. 443-451 ◽  
Author(s):  
Dongmei Liu ◽  
Xinzhong Li ◽  
Yanqing Su ◽  
Jingjie Guo ◽  
Liangshun Luo ◽  
...  
Keyword(s):  
Directional Solidification ◽  
Microstructure Evolution ◽  
Liquid Interface ◽  
Interface Morphology ◽  
Solid Liquid Interface ◽  
Solid Liquid

Effect of Solid–Liquid Interface Morphology on Grain Boundary Segregation during Colloidal Polycrystallization

2016 ◽  
Vol 16 (5) ◽  
pp. 2765-2770 ◽  
Author(s):  
Sumeng Hu ◽  
Jun Nozawa ◽  
Suxia Guo ◽  
Haruhiko Koizumi ◽  
Kozo Fujiwara ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Boundary Segregation ◽  
Liquid Interface ◽  
Grain Boundary Segregation ◽  
Interface Morphology ◽  
Solid Liquid Interface ◽  
Solid Liquid

Microstructural Perturbations in Directionally Solidified Al-In, Al-Bi and Zn-Bi Monotectic Alloys

1981 ◽  
Vol 12 ◽  
Author(s):  
B. Toloui ◽  
A. J. Macleod ◽  
D. D. Double
Keyword(s):  
Melting Point ◽  
Temperature Gradient ◽  
Growth Velocity ◽  
Liquid Interface ◽  
Liquid Region ◽  
Directionally Solidified ◽  
Lower Melting Point ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Oscillatory Instabilities

ABSTRACTStudies have been made of the microstructures developed in directionally solidified monotectic Al-In, Al-Bi and Zn-Bi alloys, as a function of growth velocity and temperature gradient. With increasing growth velocity and decreasing gradient the microstructures show transitions from regular rod-like arrangements of the lower melting point phase, through arrays of aligned droplets to coarse irregular droplet dispersions. Intermediate stages show rods with longitudinal shape perturbations of a classic Rayleigh-type instability. The changes are discussed in terms of oscillatory instabilities at the solid-liquid interface (enhanced by increasing growth velocity and decreasing temperature gradient) coupled with ripening effects in the solid + liquid region behind the interface.

Study of Solid/Liquid Interface of Ti46Al0.5W0.5Si Ingot Directionally Solidified by a Near-Rectangular Cold Crucible

2012 ◽  
Vol 472-475 ◽  
pp. 767-770
Author(s):  
Rui Run Chen ◽  
Jie Ren Yang ◽  
Hong Sheng Ding ◽  
Jing Jie Guo ◽  
Yan Qing Su ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Directional Solidification ◽  
Process Parameters ◽  
Electromagnetic Stirring ◽  
Cold Crucible ◽  
Interface Morphology ◽  
Directionally Solidified ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Future Work

In this study, Ti46Al0.5W0.5Si ingots were directionally solidified by a near-rectangular cold crucible under different process parameters. These process parameters include the electromagnetic stirring, the crucible configuration and the molten drop, all of them have important effect on the S/L interface. The effects of the parameters on the solid/liquid (S/L) interface morphology were investigated, and the mechanisms of the parameters influencing the S/L interface were discussed and revealed. Results showed that the typical S/L interface of the ingots was presented as a curved ‘W-type’ shape. The uneven temperature distribution in the front of the solidified interface is the main reason for a curved S/L interface. Further, the requirements for obtaining a planar S/L interface in the process of cold crucible directional solidification were given, which provided a guide for the future work.

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