Study for the Effect of Strain Energy on Two-phase Precipitation and Atoms Occupying in Ni68.2Al22.7V9.1 Alloy Using the Microscopic Phase-field Method

被引：0

作者：

Liu Fang ^{[1
]}

Wang Yongxin ^{[1
]}

Chen Zheng ^{[1
]}

Wang Xiaopeng ^{[1
]}

Chen Qian ^{[1
]}

Tang Hongkui ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2012年 / 41卷 / 06期

关键词：

microscopic phase-field; strain energy; L1(2) structure-Ni3V; occupation probability; COMPUTER-SIMULATION; MODEL;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of strain energy on Two-phase precipitation and Atoms occupying in Ni68.2Al22.7V9.1 alloy was studied, using the microscopic phase-field method. It is found that the strain energy significantly extend the precipitation process of L1(2) phase, and restrain the precipitation of DO22 phase. As DO22 phase decreases, the occupation probability of V atom at different sites in L1(2) phase increases, and the higher the strain energy, the greater the chance of occupying. The effect of strain energy on occupation probability of Al atom at alpha(1) site in L1(2) phase is little, only a small reduction in amplitude, but it significantly reduces occupation probability of Al atom at alpha(2) site and beta site. In all cases, the occupation probability of V atom at beta site in L1(2) phase is always higher than that at a site.

引用

页码：973 / 977

页数：5

共 13 条

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