彈性軟方向分布。彈性能對同相多顆粒合并行為的影響主要取決于與顆粒分布、尺寸及疇界間距等有關的彈性交互作用。隨著沉淀相體積分數(shù)的增加，顆粒數(shù)目先增加至最大值后減少，顆粒平均尺寸逐漸增加。"/>

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三維相場法模擬彈性能作用下Ni基合金g ′相顆粒的粗化動力學
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國家自然科學基金（51075335，51174168，10902086）；西北工業(yè)大學基礎研究基金（NPU-JC201005）


Three-Dimensional Phase-Field Method Simulation of Coarsening Kinetics of g ′ Particles under Elastic Energy in Ni Base Alloys
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    摘要:

    基于三維相場模型，研究了彈性能對g ′相顆粒形貌、取向和多顆粒合并行為的影響，以及沉淀相體積分數(shù)對g ′相顆粒數(shù)目、平均尺寸和尺寸分布的影響。結果表明：彈性能作用下g ′顆粒形貌為立方體形或者長方體形，且沿<100>彈性軟方向分布。彈性能對同相多顆粒合并行為的影響主要取決于與顆粒分布、尺寸及疇界間距等有關的彈性交互作用。隨著沉淀相體積分數(shù)的增加，顆粒數(shù)目先增加至最大值后減少，顆粒平均尺寸逐漸增加。

    Abstract:

    The effect of the elastic energy on the morphology and orientation of g ′ particles and the coalescence behavior of multi-particle were studied based on the three-dimensional phase-field method, and the influence of precipitate volume fraction on the number, average size and size distribution of g ′ particles were also studied. The results show that the g ′ particle is cubic under elastic energy, aligned along the <100> elastic soft directions. The effect of the elastic energy on the coalescence behavior of multi-particle mainly depends on the elastic interaction which is related to the particles' distribution, size and the distance of domain boundary. With the increase of precipitate volume fraction, the number of g ′ particles first increases to the maximum and then reduces; meanwhile the average size increases gradually.

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周廣釗,王永欣,陳 錚.三維相場法模擬彈性能作用下Ni基合金g ′相顆粒的粗化動力學[J].稀有金屬材料與工程,2014,43(4):916~921.[Zhou Guangzhao, Wang Yongxin, Chen Zhen. Three-Dimensional Phase-Field Method Simulation of Coarsening Kinetics of g ′ Particles under Elastic Energy in Ni Base Alloys[J]. Rare Metal Materials and Engineering,2014,43(4):916~921.]
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  • 收稿日期:2013-04-11
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  • 在線發(fā)布日期: 2014-07-30
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