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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >Synthesis of fly ash particle reinforced A356 Al composites and their characterization
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Synthesis of fly ash particle reinforced A356 Al composites and their characterization

机译：粉煤灰颗粒增强A356 Al复合材料的合成及其表征

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摘要

A356 Al-fly ash particle composites were fabricated using stir-cast technique and hot extrusion. Composites containing 6 and 12 vol.% fly ash particles were processed. Narrow size range (53-106 μm) and wide size range (0.5-400 μm) fly ash particles were used. Hardness, tensile strength, compressive strength and damping characteristics of the unreinforced alloy and composites have been measured. Bulk hardness, matrix microhardness, 0.2% proof stress of A356 Al-fly ash composites are higher compared to that of the unreinforced alloy. Additions of fly ash lead to increase in hardness, elastic modulus and 0.2% proof stress. Composites reinforced with narrow size range fly ash particle exhibit superior mechanical properties compared to composites with wide size range particles. A356 Al-fly ash MMCs were found to exhibit improved damping capacity when compared to unreinforced alloy at ambient temperature.
机译：采用搅拌铸造技术和热挤压工艺制备了A356粉煤灰颗粒复合材料。含有6和12体积％的飞灰颗粒的复合材料被处理。使用了窄尺寸范围（53-106μm）和宽尺寸范围（0.5-400μm）的飞灰颗粒。测量了未增强合金和复合材料的硬度，拉伸强度，抗压强度和阻尼特性。与未增强合金相比，A356 Al-粉煤灰复合材料的整体硬度，基体显微硬度和0.2％屈服强度更高。粉煤灰的添加导致硬度，弹性模量和0.2％弹性极限应力的增加。与具有宽尺寸范围的颗粒的复合材料相比，由窄尺寸范围的粉煤灰颗粒增强的复合材料表现出优异的机械性能。发现A356粉煤灰MMC与常温下的非增强合金相比，具有更好的阻尼能力。

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