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反應(yīng)合成Ag/SnO2復(fù)合材料擠壓過程有限元模擬
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國(guó)家自然科學(xué)基金（50874054）；昆明理工大學(xué)分析測(cè)試基金（2009-002）


Finite Element Simulation of Extrusion Process of Ag/SnO2 Composite by Reactive Synthesis
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    摘要:

    通過熱力模擬壓縮試驗(yàn)研究Ag/SnO2復(fù)合材料在不同變形條件下的流變應(yīng)力行為，并根據(jù)試驗(yàn)數(shù)據(jù)確定再結(jié)晶動(dòng)力學(xué)方程及再結(jié)晶晶粒尺寸方程中的材料參數(shù)，經(jīng)過有限元模擬得出反應(yīng)合成法制備的Ag/SnO2復(fù)合材料在擠壓過程中的晶粒尺寸演變情況及最終晶粒尺寸。與實(shí)際擠壓后試樣的電鏡照片進(jìn)行對(duì)比，模擬結(jié)果與實(shí)驗(yàn)吻合，揭示了擠壓過程晶粒尺寸變化的機(jī)制和變化特征。

    Abstract:

    The flow stress behavior of Ag/SnO2 composite under different deformation condition was investigated by isothermal constant speed compression test, and then the parameters of the kinetic equation of dynamic recrystallization and the equation of the recrystallized grain size were identified according to the experimental data. By finite element simulation of extrusion process, the grain-size evolution and final grain size of Ag/SnO2 composite by reactive synthesis were obtained. Compared with SEM images of extruded sample, it is found that the process simulation is well consistent with the experiment. Finally, the change mechanism and characteristic for the grain size in the extrusion process were revealed.

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于 杰,陳敬超,劉滿門,周曉龍,阮 進(jìn),許福太.反應(yīng)合成Ag/SnO2復(fù)合材料擠壓過程有限元模擬[J].稀有金屬材料與工程,2010,39(3):410~413.[Yu Jie, Chen Jingchao, Liu Manmen, Zhou Xiaolong, Ruan Jin, Xu Futai. Finite Element Simulation of Extrusion Process of Ag/SnO2 Composite by Reactive Synthesis[J]. Rare Metal Materials and Engineering,2010,39(3):410~413.]
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  • 收稿日期:2009-04-15
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