A Transition from Eutectic Growth to Dendritic Growth Induced by High Undercooling Conditions
LÜ Yong-Jun, WEI Bing-Bo
Department of Applied Physics, Northwestern Polytechnical
University, Xi’an 710072
A Transition from Eutectic Growth to Dendritic Growth Induced by High Undercooling Conditions
LÜ Yong-Jun;WEI Bing-Bo
Department of Applied Physics, Northwestern Polytechnical
University, Xi’an 710072
关键词 :
81.10.Aj ,
64.60.Qb ,
43.25.Uv
Abstract : Cu-8 wt.%Al eutectic alloy was undercooled by up to 187 K (0.14TE ) using a drop tube technique. The crystal growth and phase selection mechanisms were investigated during containerless rapid solidification. It is found that the microstructural morphology is characterized by lamellar eutectic growth at small undercoolings. However, if the liquid alloy is undercooled by more than 25 K, eutectic growth will be suppressed completely and the dendritic growth of (Cu) solid solution dominates its solidification process. When the undercooling exceeds 153 K, a microstructural transition from coarse dendrite to equiaxed dendrite takes place.
Key words :
81.10.Aj
64.60.Qb
43.25.Uv
出版日期: 2003-08-01
:
81.10.Aj
(Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
64.60.Qb
43.25.Uv
(Acoustic levitation)
引用本文:
LÜYong-Jun;WEI Bing-Bo. A Transition from Eutectic Growth to Dendritic Growth Induced by High Undercooling Conditions[J]. 中国物理快报, 2003, 20(8): 1379-1382.
LÜ, Yong-Jun, WEI Bing-Bo. A Transition from Eutectic Growth to Dendritic Growth Induced by High Undercooling Conditions. Chin. Phys. Lett., 2003, 20(8): 1379-1382.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I8/1379
[1]
XIE Wen-Jun;WEI Bing-Bo. Resonance Shift of Single-Axis Acoustic Levitation [J]. 中国物理快报, 2007, 24(1): 135-138.
[2]
CHEN Wan-Chun;CHEN Xiao-Long. Chiral Symmetry Breaking During Growing Process of NaClO3 Crystal under Direct-Current Electric Field [J]. 中国物理快报, 2007, 24(1): 252-255.
[3]
PAN Xiu-Hong;JIN Wei-Qing;HONG Yong;AI Fei. In Situ Observation of Skeletal Shape Transition during BaB2 O4 Crystal Growth in High-Temperature Solution [J]. 中国物理快报, 2006, 23(8): 2269-2272.
[4]
HONG Yong;AI Fei;PAN Xiu-Hong;JIN Wei-Qing;ZHONG Wei-Zhuo;SHINICHI Yoda. Growth of NaBi(WO4 )2 Dendrite and Mechanism [J]. 中国物理快报, 2006, 23(10): 2841-2844.
[5]
ZANG Chuan-Yi;JIA Xiao-Peng;MA Hong-An;LI Shang-Sheng;TIAN Yu;XIAO Hong-Yu. Grow Large High-Quality Diamonds with Different Seed Surfaces [J]. 中国物理快报, 2006, 23(1): 214-216.
[6]
ZANG Chuan-Yi;JIA Xiao-Peng;MA Hong-An;TIAN Yu;XIAO Hong-Yu. Effect of Regrown Graphite on the Growth of Large Gem Diamonds by Temperature Gradient Method [J]. 中国物理快报, 2005, 22(9): 2415-2417.
[7]
YU Ke;ZHANG Yong-Sheng;OUYANG Shi-Xi;ZHANG Qing-Jie;LUO Lai-Qiang;ZHANG Qiu-Xiang;CHANG Zhong-Kun;LI Li-Jun;ZHU Zi-Qiang. Synthesis and Field Emission of ZnO Nanostructures on CuO Catalyzed Porous Silicon Substrate [J]. 中国物理快报, 2005, 22(9): 2411-2414.
[8]
WANG Xian-Cheng;MA Hong-An;ZANG Chuan-Yi;TIAN Yu;LI Shang-Sheng;JIA Xiao-Peng;. Growth of Large High-Quality Type-II a Diamond Crystals [J]. 中国物理快报, 2005, 22(7): 1800-1802.
[9]
FU Dong. Nucleation for Lennard-Jones Fluid by Density Functional Theory [J]. 中国物理快报, 2005, 22(6): 1378-1381.
[10]
CHEN Wan-Chun;LIU Dao-Dan;WANG YU-Ren. Morphological Evolution during Synthesis of New AlPO4 .H2 O Crystal [J]. 中国物理快报, 2005, 22(10): 2704-2707.
[11]
ZANG Chuan-Yi;JIA Xiao-Peng;REN Guo-Zhong;WANG Xian-Cheng. Dependence of Growing High-Quality Gem Diamonds on Growth Rates by Temperature Gradient Method [J]. 中国物理快报, 2004, 21(8): 1648-1650.
[12]
WANG Nan; WEI Bing-Bo. Droplet Undercooling During Containerless Processing in a Drop Tube [J]. 中国物理快报, 2004, 21(6): 1120-1123.
[13]
WU Hai-Ling;MA Yuan;PENG Xiao-Feng. Freezing-Thawing Characteristics of Botanical Tissues and Influence of Water Morphology [J]. 中国物理快报, 2004, 21(2): 345-347.
[14]
WANG Xiao-Dong;TIAN Yong;PENG Xiao-Feng;WANG Bu-Xuan. Inner Structure of Boiling Nucleus and Interfacial Energy Between Nucleus and Bulk Liquid [J]. 中国物理快报, 2004, 21(2): 348-351.
[15]
LIU Ri-Ping. Thermodynamic Analyses of the Solid-Liquid Interface and Growth Mode Transition in Undercooled Melts [J]. 中国物理快报, 2003, 20(9): 1622-1625.