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首页> 外文会议>TMS annual meeting exhibition >STATISTICAL MODEL OF PRECIPITATION KINETICS FOR RECYCLED COMMERCIAL ALUMINIUM ALLOYS
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STATISTICAL MODEL OF PRECIPITATION KINETICS FOR RECYCLED COMMERCIAL ALUMINIUM ALLOYS

机译：回收商业铝合金的析出动力学统计模型

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摘要

A thermodynamics based precipitation model for aluminium alloys is presented. The model is capable of describing the simultaneous nucleation, growth and coarsening of all known stable precipitates in multi-component systems for arbitrary heat treatments. The thermodynamic data required to calculate the nucleation driving force and the equilibrium phase compositions is taken from a database that contains 15 elements (Al, B, C, Cr, Cu, Fe, Mg, Mn, Ni, Si, Sr, Ti, V, Zn, Zr). As a result, the model can be applied to most commercial aluminium alloys. The model was validated by comparing simulated with experimental results of various alloys on precipitate volume fractions and matrix composition. This validated model was utilized to predict the precipitation kinetics of recycled commercial alloys, hi particular, the sensitivity of precipitation on composition fluctuations, which are inherent with recycled materials, is evaluated.
机译：提出了一种基于热力学的铝合金沉淀模型。该模型能够描述多组分系统中任意热处理的所有已知稳定沉淀物的同时成核，生长和粗化。计算成核驱动力和平衡相组成所需的热力学数据取自包含15种元素（Al，B，C，Cr，Cu，Fe，Mg，Mn，Ni，Si，Sr，Ti，V ，Zn，Zr）。结果，该模型可以应用于大多数商用铝合金。通过与各种合金在沉淀物体积分数和基体组成上的实验结果进行仿真比较，验证了该模型的有效性。该经过验证的模型可用于预测回收的商用合金的沉淀动力学，尤其是评估了回收材料固有的沉淀对成分波动的敏感性。

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