Denucleation and high undercooling of Ni-32.5%Sn eutectic alloy

Bingbo Wei; Gencang Yang; Yaohe Zhou

Denucleation and high undercooling of Ni-32.5%Sn eutectic alloy

Bingbo Wei, Gencang Yang, Yaohe Zhou

School of Physical Science and Technology

Northwestern Polytechnical University Xian

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

Abstract

Undercoolings up to 397 K (0.283 T_E) have been obtained for Ni-32.5%Sn eutectic alloy melted by superheating-cooling cycles and denucleating with inorganic glasses. The predominant dissipation of heat for highly undercooled alloy melt is through radiation. An approximate method is consequently derived to calculate its mean specific heat from measured cooling curves. With the aid of high speed cinematography, it is revealed that the surface or interface heterogeneous nucleation takes place in preference to homogeneous nucleation even though the undercooling has exceeded 0.2 T_E.

Original language	English
Pages (from-to)	115-120
Number of pages	6
Journal	Acta Metallurgica Sinica Series B, Process Metallurgy & Miscellaneous
Volume	4
Issue number	2
State	Published - Apr 1991

Cite this

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title = "Denucleation and high undercooling of Ni-32.5%Sn eutectic alloy",

abstract = "Undercoolings up to 397 K (0.283 TE) have been obtained for Ni-32.5%Sn eutectic alloy melted by superheating-cooling cycles and denucleating with inorganic glasses. The predominant dissipation of heat for highly undercooled alloy melt is through radiation. An approximate method is consequently derived to calculate its mean specific heat from measured cooling curves. With the aid of high speed cinematography, it is revealed that the surface or interface heterogeneous nucleation takes place in preference to homogeneous nucleation even though the undercooling has exceeded 0.2 TE.",

author = "Bingbo Wei and Gencang Yang and Yaohe Zhou",

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AU - Wei, Bingbo

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AU - Zhou, Yaohe

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N2 - Undercoolings up to 397 K (0.283 TE) have been obtained for Ni-32.5%Sn eutectic alloy melted by superheating-cooling cycles and denucleating with inorganic glasses. The predominant dissipation of heat for highly undercooled alloy melt is through radiation. An approximate method is consequently derived to calculate its mean specific heat from measured cooling curves. With the aid of high speed cinematography, it is revealed that the surface or interface heterogeneous nucleation takes place in preference to homogeneous nucleation even though the undercooling has exceeded 0.2 TE.

AB - Undercoolings up to 397 K (0.283 TE) have been obtained for Ni-32.5%Sn eutectic alloy melted by superheating-cooling cycles and denucleating with inorganic glasses. The predominant dissipation of heat for highly undercooled alloy melt is through radiation. An approximate method is consequently derived to calculate its mean specific heat from measured cooling curves. With the aid of high speed cinematography, it is revealed that the surface or interface heterogeneous nucleation takes place in preference to homogeneous nucleation even though the undercooling has exceeded 0.2 TE.

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JF - Acta Metallurgica Sinica Series B, Process Metallurgy & Miscellaneous

IS - 2

ER -

Denucleation and high undercooling of Ni-32.5%Sn eutectic alloy

Abstract

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