Abstract

The variation in the grain size of a titanium carbide-based material with a cobalt binder is studied theoretically and experimentally in relation to its location in the chamber of a die, matrix, and along the length of the sample after SHS extrusion. Our experimental results show that the average grain size in a material synthesized without any external load is 4.9 μm. Densification in a die reduces it to 3.8 μm, and extrusion of the material considerably reduces the average grain size, down to 2 μm, which is consistent with theoretical predictions. In most of the extruded rod, the grain size distributions along and across the rod are uniform.

中文翻译：

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在SHS挤压过程中减少TiC-Co材料的晶粒尺寸

摘要

理论上和实验上研究了带有钴粘合剂的碳化钛基材料的晶粒尺寸变化，涉及其在模具，基体腔室内的位置以及SHS挤压后沿样品长度的变化。我们的实验结果表明，在没有任何外部负载的情况下合成的材料的平均晶粒尺寸为4.9μm。模具中的致密化将其减小到3.8μm，材料的挤压可将平均晶粒尺寸减小到2μm，这与理论预测是一致的。在大多数挤压棒中，沿着和穿过棒的晶粒尺寸分布是均匀的。