Data for: Increase of surface hardness and substrate toughness due to migration of grain growth inhibitors in the ultrafine-grained layer during sintering of functionally graded cemented carbides

Properties distributions of sintered gradient hard alloys. Microstructures of gradinent hard alloys samples sintered at a temperatures of 1350 °C,1370°C,1390 °C,1410°C C at distance of 0.01 mm (a), 3 mm (b), 6 mm (c), and 9 mm (d)烧结梯度硬质合金（gradient hard alloys）的性能分布。本数据集同时涵盖在1350℃、1370℃、1390℃及1410℃下烧结制备的梯度硬质合金试样，于0.01 mm（a）、3 mm（b）、6 mm（c）与9 mm（d）距离处的显微组织数据。