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应变速率、液体体积分数和液体粘度对金属半固态成形变形力的影响 被引量:10

Effects of strain rate, liquid volume fraction and liquid viscosity on deformation force of semi-solid compression of metals
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摘要 建立了用于描述金属及颗粒增强金属基复合材料在半固态下一维等温轴对称压缩变形行为的理论模型。使用有限差分技术和铝合金的参数来进行模型计算。根据模型的计算结果 ,研究了应变速率、液体体积分数和液体粘度对金属在两平行板间半固态压缩变形力的影响。结果表明 ,液体粘度对变形力几乎没有影响 ,变形力随轴向应变速率绝对值的增加而增加 ,随液体体积分数的增加而明显减少。 An isothermal one dimension model of axisymmetrical compression was proposed, which can describe the deformation of metal and particulate reinforced metal matrix composites(PMMCs) in the semi solid state. The finite differential technique and the parameters used to Al alloys were employed to calculate this model. The influences of strain rate, liquid volume fraction and liquid viscosity on the deformation force of semi solid compression of metals between two parallel plates were investigated according to the calculation results of the model. The results show that the deformation force of semi solid compression of metals increases with the increase of axial strain rate, decreases with the increase of liquid volume fraction, while the liquid viscosity has no effect on the deformation force.
出处 《中国有色金属学报》 EI CAS CSCD 北大核心 2000年第S1期192-197,共6页 The Chinese Journal of Nonferrous Metals
基金 国家自然科学基金!资助项目 ( 596750 50 )
关键词 半固态 颗粒增强金属基复合材料 轴对称压缩 理论模型 semi solid particulate reinforced metal matrix composites axisymmetrical compression theoretical model
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参考文献4

  • 1Merton C. Flemings. Behavior of metal alloys in the semisolid state[J] 1991,Metallurgical Transactions A(5):957~981
  • 2Lawrence A. Lalli. A model for deformation and segregation of solid-liquid mixtures[J] 1985,Metallurgical Transactions A(8):1393~1403
  • 3M. Suery,M. C. Flemings. Effect of Strain Rate on Deformation Behavior of Semi-Solid Dendritic Alloys[J] 1982,Metallurgical Transactions A(10):1809~1819
  • 4V. Laxmanan,M. C. Flemings. Deformation of semi-solid Sn-15 Pct Pb alloy[J] 1980,Metallurgical Transactions A(12):1927~1937

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