Phase field investigation on the initial planar instability with surface tension anisotropy during directional solidification of binary alloys

doi:10.1088/1674-1056/19/1/017305

Abstract Phase field investigation reveals that the stability of the planar interface is related to the anisotropic intensity of surface tension and the misorientation of preferred crystallographic orientation with respect to the heat flow direction. The large anisotropic intensity may compete to determine the stability of the planar interface. The destabilizing effect or the stabilizing effect depends on the misorientation. Moreover, the interface morphology of initial instability is also affected by the surface tension anisotropy.

Keywords: surface tension anisotropy directional solidification interfacial stability

Received: 13 April 2009
Revised: 15 June 2009
Accepted manuscript online:

PACS:	81.30.Fb	(Solidification)
	61.50.-f	(Structure of bulk crystals)
	61.66.Dk	(Alloys )
	68.03.Cd	(Surface tension and related phenomena)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 50401013) and the State Key Laboratory of Solidification Processing in Northwestern Polytechnical University of China (NWPU) (Grant No. KP200903).

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Wang Zhi-Jun(王志军), Wang Jin-Cheng(王锦程), and Yang Gen-Cang(杨根仓) Phase field investigation on the initial planar instability with surface tension anisotropy during directional solidification of binary alloys 2010 Chin. Phys. B 19 017305

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Phase field investigation on the initial planar instability with surface tension anisotropy during directional solidification of binary alloys

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