Optical Microscopy Dataset of Al10Cu–7.5 wt.% B4C Composites Produced by Powder Metallurgy

This dataset provides optical microscopy images of Al10Cu matrix composites reinforced with 7.5 wt.% B4C, manufactured via the powder metallurgy route. For metallographic preparation, samples were mounted in acrylic resin, ground with abrasive papers up to #1200, and polished with diamond suspensions followed by OP-S. Etching was carried out using a 0.5% aqueous HF solution to reveal the microstructural features. The imaging was performed with a Polyvar Met light microscope at magnifications up to 500×. The images illustrate key features of the composite, including the dispersion of B4C reinforcement, interfacial regions between the ceramic phase and the Al10Cu matrix, as well as porosity and particle pull-out effects. This open-access dataset can be used as a reference for researchers studying Al-B4C composites, microstructural characterization of powder metallurgy materials, and their correlation with mechanical and tribological properties.本数据集包含采用粉末冶金工艺制备的、添加7.5%质量分数碳化硼（B₄C）增强相的Al10Cu基复合材料的光学显微图像。金相制样过程中，试样经丙烯酸树脂镶嵌后，依次使用粒度至#1200的砂纸进行研磨，再以金刚石悬浮液抛光，最后采用OP-S完成终抛。采用0.5%的氢氟酸（HF）水溶液进行腐蚀，以清晰显现微观组织特征。成像工作使用Polyvar Met型光学显微镜完成，放大倍率最高可达500×。 本数据集的图像展示了该复合材料的核心微观特征，包括碳化硼增强相的分布状态、陶瓷相与Al10Cu基体之间的界面区域，以及孔隙缺陷与颗粒拔出现象。该开源数据集可作为研究Al-B₄C复合材料、粉末冶金材料微观组织表征，及其与力学性能、摩擦学性能关联的科研人员的参考资料。