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Evolution of the effective elastic properties of metal matrix composites during the synthesis
International Journal of Engineering Science ( IF 6.6 ) Pub Date : 2020-05-25 , DOI: 10.1016/j.ijengsci.2020.103307
Maria Anisimova , Anna Knyazeva , Igor Sevostianov

We propose a simple analytical model to evaluate changes in the overall elastic properties of metal matrix composites during the manufacturing process. The problem is solved in several steps. First, the moving boundary problem on formation and growth of the transient layer between the matrix and inhomogeneities is solved analytically in quasi-stationary approximation. This solution is used to estimate changes in phase concentrations during the synthesis and to calculate effective properties of the representative inhomogeneous inclusion (of variable size) consisting of the core inhomogeneity and growing transit layer. At the last stage, variation of the effective properties of a composite with varying concentrations of phases during the synthesis is evaluated using micromechanical homogenization schemes. The approach is illustrated on example of Al/W composite when Al5W phase is formed.



中文翻译:

合成过程中金属基复合材料有效弹性性能的演变

我们提出了一个简单的分析模型,以评估制造过程中金属基复合材料的整体弹性性能的变化。这个问题可以通过几个步骤解决。首先,在准静态逼近中解析地解决了基质与非均匀性之间过渡层的形成和生长的运动边界问题。该解决方案用于估计合成过程中相浓度的变化,并计算由核心不均匀性和不断增长的过渡层组成的(尺寸可变)代表性不均匀夹杂物的有效性质。在最后阶段,使用微机械均化方案评估了合成过程中不同相浓度的复合材料有效性能的变化。形成5 W相。

更新日期:2020-05-25
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