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應(yīng)力場(chǎng)對(duì)相分解過(guò)程影響的計(jì)算機(jī)模擬研究(I)——模型描述及對(duì)稱成分下的相分離模擬
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O414.13

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國(guó)家自然科學(xué)基金資助項(xiàng)目(50271084)


Effect of Stress Field on Phase Separation Process by Computer Simulation (I): Model Description and Simulation of Symmetrical Composition Phase Separation Process
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    摘要:

    將擴(kuò)散界面場(chǎng)模型與Khachaturyan彈性應(yīng)變能計(jì)算模型相耦合,對(duì)對(duì)稱成分點(diǎn)調(diào)幅分解過(guò)程中應(yīng)力場(chǎng)(包括外場(chǎng))對(duì)析出相的形態(tài)及動(dòng)力學(xué)過(guò)程的影響進(jìn)行模擬研究。模擬結(jié)果表明:對(duì)于非均勻彈性模量系統(tǒng)在外加應(yīng)力場(chǎng)作用下,沉淀相的析出過(guò)程發(fā)生重大的變化,粒子沿彈性軟方向呈各向異性析出。

    Abstract:

    In this paper,Diffuse-interface field model and Khachaturyan elastic strain energy model are coupled to investigate the morphologyical evolutions and kinetics process controlled by transformation-induced elastic strain (include external strain field) during spinodal decomposition in a symmetrical composition case. The simulation results indicate that precipitates are preferentially oriented along elalstic soft directions with an external stress for an inhomogeneous elastic modulus system.

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陳大欽,李世晨,鄭子樵,劉祖耀,李劍.應(yīng)力場(chǎng)對(duì)相分解過(guò)程影響的計(jì)算機(jī)模擬研究(I)——模型描述及對(duì)稱成分下的相分離模擬[J].稀有金屬材料與工程,2005,34(8).[Chen Daqin, Li Shichen, Zheng Ziqiao, Liu Zuyao, Li Jian. Effect of Stress Field on Phase Separation Process by Computer Simulation (I): Model Description and Simulation of Symmetrical Composition Phase Separation Process[J]. Rare Metal Materials and Engineering,2005,34(8).]
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