The first refined granular microstructure solidified from undercooled Cu70Ni30 melts

Xuefeng Guo; Feng Liu; Gencang Yang; Jiandong Xing

The first refined granular microstructure solidified from undercooled Cu₇₀Ni₃₀ melts

Xuefeng Guo, Feng Liu, Gencang Yang, Jiandong Xing

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The microstructure evolution of Cu₇₀Ni₃₀ alloy melts was systematically investigated in the undercooling range of 21 K to 270 K by using glass fluxing technique combined with cycle superheating and cooling processing in high vacuum. When ΔT < ΔT^*₂(120 K), the first granular crystalline formed gradually from dendrite with increasing undercooling. The analysis of microstructure and composition shows that high-angle boundaries do not coincide with the segregation zone between remelted fragments. It is shown that the grain refinement process consists of the disintegration of dendrite formed in rapid solidification and recrystallization of dendritic fragments.

Original language	English
Pages (from-to)	351-355
Number of pages	5
Journal	Jinshu Xuebao/Acta Metallurgica Sinica
Volume	36
Issue number	4
State	Published - Apr 2000

Keywords

CuNi alloy
Dendrite remelting
Recrystallization
Undercooling

Cite this

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title = "The first refined granular microstructure solidified from undercooled Cu70Ni30 melts",

abstract = "The microstructure evolution of Cu70Ni30 alloy melts was systematically investigated in the undercooling range of 21 K to 270 K by using glass fluxing technique combined with cycle superheating and cooling processing in high vacuum. When ΔT < ΔT*2(120 K), the first granular crystalline formed gradually from dendrite with increasing undercooling. The analysis of microstructure and composition shows that high-angle boundaries do not coincide with the segregation zone between remelted fragments. It is shown that the grain refinement process consists of the disintegration of dendrite formed in rapid solidification and recrystallization of dendritic fragments.",

keywords = "CuNi alloy, Dendrite remelting, Recrystallization, Undercooling",

author = "Xuefeng Guo and Feng Liu and Gencang Yang and Jiandong Xing",

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T1 - The first refined granular microstructure solidified from undercooled Cu70Ni30 melts

AU - Guo, Xuefeng

AU - Liu, Feng

AU - Yang, Gencang

AU - Xing, Jiandong

PY - 2000/4

Y1 - 2000/4

N2 - The microstructure evolution of Cu70Ni30 alloy melts was systematically investigated in the undercooling range of 21 K to 270 K by using glass fluxing technique combined with cycle superheating and cooling processing in high vacuum. When ΔT < ΔT*2(120 K), the first granular crystalline formed gradually from dendrite with increasing undercooling. The analysis of microstructure and composition shows that high-angle boundaries do not coincide with the segregation zone between remelted fragments. It is shown that the grain refinement process consists of the disintegration of dendrite formed in rapid solidification and recrystallization of dendritic fragments.

AB - The microstructure evolution of Cu70Ni30 alloy melts was systematically investigated in the undercooling range of 21 K to 270 K by using glass fluxing technique combined with cycle superheating and cooling processing in high vacuum. When ΔT < ΔT*2(120 K), the first granular crystalline formed gradually from dendrite with increasing undercooling. The analysis of microstructure and composition shows that high-angle boundaries do not coincide with the segregation zone between remelted fragments. It is shown that the grain refinement process consists of the disintegration of dendrite formed in rapid solidification and recrystallization of dendritic fragments.

KW - CuNi alloy

KW - Dendrite remelting

KW - Recrystallization

KW - Undercooling

UR - http://www.scopus.com/inward/record.url?scp=0042184032&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:0042184032

SN - 0412-1961

VL - 36

SP - 351

EP - 355

JO - Jinshu Xuebao/Acta Metallurgica Sinica

JF - Jinshu Xuebao/Acta Metallurgica Sinica

IS - 4

ER -

The first refined granular microstructure solidified from undercooled Cu₇₀Ni₃₀ melts

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Keywords

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