Microscopic phase-field simulation for rafting of Ni75AlxV25-x alloys in the cyclic temperature field

Kun Yang; Yongxin Wang; Zheng Chen; Shu Guo; Linping Zheng; Mingyi Zhang; Qingbo Lai

Microscopic phase-field simulation for rafting of Ni₇₅Al_xV_25-x alloys in the cyclic temperature field

Kun Yang, Yongxin Wang, Zheng Chen, Shu Guo, Linping Zheng, Mingyi Zhang, Qingbo Lai

Queen Mary University of London Engineering School

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

Abstract

Based on the microscopic phase-field kinetic model for ternary alloys, rafting of the microstructure of Ni₇₅Al_xV_25-x alloys in the cyclic temperature field and the diversification of the volume fraction with the temperature and composition change were investigated. The results show that the DO₂₂ phase is rafted obviously in the cyclic temperature field; the L1₂ phase is rafted obviously on the elastic soft direction when the Al content is higher. When the temperature of the cyclic temperature field is up to a certain value, the equilibrium volume fraction value of the L1₂ phase is higher than that in the constant temperature field; the equilibrium volume fraction value of the L1₂ phase increases slowly with the aging proceeding and the temperature of the cyclic temperature field increasing.

Original language	English
Pages (from-to)	2161-2164
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	39
Issue number	12
State	Published - Dec 2010

Keywords

Microscopic phase-field
NiAlV alloys
Rafting

Cite this

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title = "Microscopic phase-field simulation for rafting of Ni75AlxV25-x alloys in the cyclic temperature field",

abstract = "Based on the microscopic phase-field kinetic model for ternary alloys, rafting of the microstructure of Ni75AlxV25-x alloys in the cyclic temperature field and the diversification of the volume fraction with the temperature and composition change were investigated. The results show that the DO22 phase is rafted obviously in the cyclic temperature field; the L12 phase is rafted obviously on the elastic soft direction when the Al content is higher. When the temperature of the cyclic temperature field is up to a certain value, the equilibrium volume fraction value of the L12 phase is higher than that in the constant temperature field; the equilibrium volume fraction value of the L12 phase increases slowly with the aging proceeding and the temperature of the cyclic temperature field increasing.",

keywords = "Microscopic phase-field, NiAlV alloys, Rafting",

author = "Kun Yang and Yongxin Wang and Zheng Chen and Shu Guo and Linping Zheng and Mingyi Zhang and Qingbo Lai",

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journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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T1 - Microscopic phase-field simulation for rafting of Ni75AlxV25-x alloys in the cyclic temperature field

AU - Yang, Kun

AU - Wang, Yongxin

AU - Chen, Zheng

AU - Guo, Shu

AU - Zheng, Linping

AU - Zhang, Mingyi

AU - Lai, Qingbo

PY - 2010/12

Y1 - 2010/12

N2 - Based on the microscopic phase-field kinetic model for ternary alloys, rafting of the microstructure of Ni75AlxV25-x alloys in the cyclic temperature field and the diversification of the volume fraction with the temperature and composition change were investigated. The results show that the DO22 phase is rafted obviously in the cyclic temperature field; the L12 phase is rafted obviously on the elastic soft direction when the Al content is higher. When the temperature of the cyclic temperature field is up to a certain value, the equilibrium volume fraction value of the L12 phase is higher than that in the constant temperature field; the equilibrium volume fraction value of the L12 phase increases slowly with the aging proceeding and the temperature of the cyclic temperature field increasing.

AB - Based on the microscopic phase-field kinetic model for ternary alloys, rafting of the microstructure of Ni75AlxV25-x alloys in the cyclic temperature field and the diversification of the volume fraction with the temperature and composition change were investigated. The results show that the DO22 phase is rafted obviously in the cyclic temperature field; the L12 phase is rafted obviously on the elastic soft direction when the Al content is higher. When the temperature of the cyclic temperature field is up to a certain value, the equilibrium volume fraction value of the L12 phase is higher than that in the constant temperature field; the equilibrium volume fraction value of the L12 phase increases slowly with the aging proceeding and the temperature of the cyclic temperature field increasing.

KW - Microscopic phase-field

KW - NiAlV alloys

KW - Rafting

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JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

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ER -

Microscopic phase-field simulation for rafting of Ni₇₅Al_xV_25-x alloys in the cyclic temperature field

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Keywords

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