In this study, we investigated the microstructure and wear behaviour of A356/fly ash composites fabricated using the powder metallurgy method. Fly ash was added to A356 Al alloy in four different ratios by weight and mechanically milled for 1 h. The milled composite powders were pre-formed under 800 MPa pressure and sintered for 1 h under vacuum at 590 °C. The microstructures of the produced samples were examined by optical microscope, SEM, EDS and XRD. The hardness measurements and wear tests were performed to determine the effect of fly ash content on the properties of the samples. As a result of the study, it was found that the hardness value increased with the increasing fly ash amount up to 2 wt% and decreased after 2 wt%. The wear test results were consistent with the hardness results. The maximum weight loss occurred in the composite containing 4 wt% fly ash.

在这项研究中，我们研究了使用粉末冶金方法制造的 A356/粉煤灰复合材料的微观结构和磨损行为。将粉煤灰以四种不同的重量比添加到 A356 铝合金中，并机械研磨 1 小时。研磨后的复合粉末在 800 MPa 压力下预成型，并在 590°C 真空下烧结 1 小时。通过光学显微镜、SEM、EDS和XRD对制备的样品的微观结构进行了检查。进行硬度测量和磨损测试以确定飞灰含量对样品性能的影响。研究结果表明，硬度值随着飞灰量的增加而增加，达到 2 wt%，而在 2 wt% 后硬度值下降。磨损试验结果与硬度结果一致。