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

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

中国物理B ›› 2010, Vol. 19 ›› Issue (1): 17305-017305.doi: 10.1088/1674-1056/19/1/017305

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

王志军, 王锦程, 杨根仓

State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China

收稿日期:2009-04-13 修回日期:2009-06-15 出版日期:2010-01-15 发布日期:2010-01-15
基金资助:
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).

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

Wang Zhi-Jun(王志军), Wang Jin-Cheng(王锦程)^†, and Yang Gen-Cang(杨根仓)

State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China

Received:2009-04-13 Revised:2009-06-15 Online:2010-01-15 Published:2010-01-15
Supported by:
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).

摘要/Abstract

摘要： 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.

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.

Key words: surface tension anisotropy, directional solidification, interfacial stability

中图分类号: (Solidification)

81.30.Fb

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

王志军, 王锦程, 杨根仓. Phase field investigation on the initial planarinstability with surface tension anisotropy during directional solidification of binary alloys[J]. 中国物理B, 2010, 19(1): 17305-017305.

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[J]. Chin. Phys. B, 2010, 19(1): 17305-017305.

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

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

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