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首页> 外文会议>Materials science and technology VII >STUDY OF PARTICLE DISTRIBUTION IN AL-SIC PARTICULATE COMPOSITE BY RANDOM MOTION OF MOULD
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STUDY OF PARTICLE DISTRIBUTION IN AL-SIC PARTICULATE COMPOSITE BY RANDOM MOTION OF MOULD

机译：模具随机运动研究Al-Sic颗粒复合物中的颗粒分布

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摘要

Synthesis of Al metal matrix composites (MMCs) with ceramic participate reinforcements via the casting route is associated with the problem of non-uniform distribution of paniculate. The problem of non-uniform distribution is more for the case of larger particulate volume fraction. In the present study a novel method has been tried to overcome this. It involves random movement of mold containing liquid aluminium and ceramic particulates ie SiC. In the present study a spherical mold containing molten aluminium and SiC particulates of size 50-100μm is allowed to rotate in a cylindrical drum to impart a random rotation as well translation Before the design of the experiment at work the process simulation has already been completed. Accordingly the process has been fabricated. At present the process is a crude but preliminary experiments have shown that the distribution of particles obtained by this technique are better as compared to that of stir cast composites with similar volume fraction of reinforcement. However, the results obtained by the novel technique varied as proper control over the random motion of the mold were not possible. Although uniform microstructure could be obtained in most of the experiments in some cases and certain zones the microstructure showed a non uniform distribution of particles. The temperature of mold before it is subjected to random movement strongly influenced the particle distribution.
机译：通过浇铸路线合成具有陶瓷参与的增强材料的Al金属基复合材料（MMCs）与颗粒不均匀分布有关。对于较大的颗粒体积分数，不均匀分布的问题更多。在本研究中，尝试了一种新颖的方法来克服这一问题。它涉及包含液态铝和陶瓷颗粒（例如SiC）的模具的随机运动。在本研究中，使包含熔融铝和尺寸为50-100μm的SiC颗粒的球形模具在圆柱鼓中旋转以产生随机旋转以及平移。在进行实验设计之前，已经完成了过程仿真。因此，已经制造了该过程。目前该方法是粗略的，但是初步实验表明，与具有相似体积分数的增强材料的搅拌铸造复合材料相比，通过这种技术获得的颗粒分布更好。然而，由于不可能对模具的随机运动进行适当控制，因此通过新颖技术获得的结果有所不同。尽管在某些情况下和某些区域的大多数实验中可以获得均匀的微观结构，但微观结构显示出颗粒的不均匀分布。模具随机运动之前的温度强烈影响了颗粒的分布。

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