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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Effect of tool pin profile on the microstructure and mechanical properties of friction stir processed A16061/Al_2O_3-TiB_2 surface hybrid composite layer
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Effect of tool pin profile on the microstructure and mechanical properties of friction stir processed A16061/Al_2O_3-TiB_2 surface hybrid composite layer

机译：工具销轮廓对摩擦搅拌加工的微观结构和力学性能的影响A16061 / Al_2O_3-TIB_2表面杂化复合层

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摘要

The Al6061/Al2O3-TiB2 surface hybrid composites were produced using friction stir processing. The effect of the tool pin profile was investigated on the microstructure and mechanical properties including hardness and wear resistance. For this purpose, simple cylindrical, threaded cylindrical, taper, square, and triangular pin profiles were used. X-ray diffraction analysis and transmission electron microscopy were used to characterize the used powder. Light and scanning electron microscopes were utilized for the microstructural observations of the processed samples. The results showed that the distribution of Al2O3-TiB2 particles in the specimens produced using square and triangular tool pin profiles was more uniform due to their tool geometry, which results in better stirring of the material and good material flow. Consequently, a greater reduction of particle clustering was observed, and hence the mechanical properties were enhanced. Moreover, the samples produced using square and triangular pin profiles exhibited more grain refinement than the other samples. More uniform structure, less clustering, and finer grains produced by square and triangular pin profiles caused higher hardness and wear resistance of the samples.
机译：使用摩擦搅拌加工制备Al6061 / Al2O3-TiB2表面杂化复合材料。研究了工具销轮廓的效果，包括包括硬度和耐磨性的微观结构和机械性能。为此目的，使用简单的圆柱形，螺纹圆柱形，锥形，正方形和三角形销轮廓。 X射线衍射分析和透射电子显微镜用于表征二手粉末。光和扫描电子显微镜用于加工样品的微观结构观察。结果表明，由于工具几何形状，使用正方形和三角形工具销轮廓产生的样品中的Al2O3-Tib2颗粒的分布更均匀，这导致更好地搅拌材料和良好的材料流动。因此，观察到更大减少颗粒聚类，因此提高了机械性能。此外，使用正方形和三角形销型材产生的样品表现出比其他样品更多的晶粒细化。更均匀的结构，较少的聚类和由正方形和三角形销型材产生的细粒引起样品的硬度和耐磨性。

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