Directional solidification with interface dissipation
نویسندگان
چکیده
منابع مشابه
Cellular instabilities in directional solidification
2014 We have studied the morphology of the solid-liquid interface during the directional solidification of thin (5-150 03BCm) samples of a dilute binary mixture (CBr4/~ 0.1 % Br2) . Above a critical pulling speed, for a given temperature gradient and solute concentration, the interface, initially planar, breaks down into a periodic cellular pattern. The bifurcation from a planar to a cellular s...
متن کاملGaussian Grooves Propagating across a Moving Curved Interface in Directional Solidification
In gratitude to Antoine Skoulios for original and illuminating insights on complex materials, and, to celebrate the emergence of his new adventures, this article is a synopsis of astonishing observations made about a decade ago on a deceptively simple material, succinonitrile, during its crystal growth from a curved phase boundary traveling in narrow channels. For a range of pulling speeds, v, ...
متن کاملUltrasonic Sensing of Solid-Liquid Interface during Directional Solidification of Aluminum
This paper presents a newly developed high temperature ultrasonic sensor and its application to in situ observation of aluminum (Al) alloy during solidification and melting in temperature up to 800C. The ultrasonic sensor mainly consists of a conventional piezoelectric transducer, a titanium buffer rod as an acoustic waveguide and an air cooling pipe. The length is approximately 300 mm. This ul...
متن کاملA Fixed-Grid Front-Tracking Algorithm for Solidification Problems. Part II - Directional Solidification with Melt Convection
A numerical study of directional solidification has been performed using a fixed-grid front-tracking algorithm. The directional solidification of pure tin, as well as the horizontal Bridgman growth of pure succinonitrile, were investigated. In both cases, the growth front was stable and non-dendritic, but was significantly distorted by the influence of convection in the melt and, for the Bridgm...
متن کاملOnset of sidebranching in directional solidification.
We use a computationally efficient phase-field formulation [B. Echebarria, Phys. Rev. E 70, 061604 (2004)] to investigate the origin and dynamics of sidebranching in directional solidification for realistic parameters of a dilute alloy previously studied experimentally [M. Gorgelin and A. Pocheau, Phys. Rev. E 57, 3189 (1998)]. Sidebranching is found to result either from noise amplification or...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 1991
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.43.6920