Ternary Eutectic Growth in a Highly Undercooled Liquid Alloy
RUAN Ying, WANG Nan, CAO Chong-De, WEI Bing-Bo
Department of Applied Physics, Northwestern Polytechnical University, Xi’an 710072
Ternary Eutectic Growth in a Highly Undercooled Liquid Alloy
RUAN Ying;WANG Nan;CAO Chong-De;WEI Bing-Bo
Department of Applied Physics, Northwestern Polytechnical University, Xi’an 710072
关键词 :
61.25.Mv ,
68.55.Ac ,
68.55.Jk
Abstract : The crystal nucleation and growth mechanism during the formation of Ag42.4 Cu21.6 Sb36 ternary eutectic are investigated under substantial undercooling conditions. The x-ray diffraction analysis shows that the solidified eutectic phases are not involved (Ag) within a wide undercooling range of 6-114K. This indicates that under high undercooling condition, the phase constitution of Ag-Cu-Sb eutectic is different from that in the equilibrium phase diagram. With the increase of undercooling, the crystalline morphology of Ag42.4 Cux21.6 Sb36 alloy transforms from the mixed structure of primary θ(Cu2 Sb), two pseudobinary eutectics and (ε+θ+Sb) ternary eutectic into a unique (ε+θ+Sb) ternary eutectic. The calculated results indicate that θ(Cu2 Sb) is the leading nucleating phase among the three eutectic phases. In addition, the growth morphology of primary ε(Ag3 Sb) compound in Ag60 Cu6 Sb34 alloy exhibits the characteristics of solid solution and its orthorhombic dendrite grows along the <111> directions.
Key words :
61.25.Mv
68.55.Ac
68.55.Jk
出版日期: 2004-08-01
引用本文:
RUAN Ying;WANG Nan;CAO Chong-De;WEI Bing-Bo. Ternary Eutectic Growth in a Highly Undercooled Liquid Alloy[J]. 中国物理快报, 2004, 21(8): 1590-1592.
RUAN Ying, WANG Nan, CAO Chong-De, WEI Bing-Bo. Ternary Eutectic Growth in a Highly Undercooled Liquid Alloy. Chin. Phys. Lett., 2004, 21(8): 1590-1592.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2004/V21/I8/1590
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