G20Mn5N铸钢件微细观孔洞三维特征及形态演化

闫华东,靳慧

Three-Dimensional Characteristics and Morphological Evolution of Micro/Meso Pores inG20Mn5N Steel Castings

Huadong YAN,Hui JIN

表1 试样4~7中初始气孔、气缩孔和缩孔的特征数据

Table 1 Characterization informations of initial gas, gas-shrinkage and shrinkage pores in specimens 4~7

Specimen Pore type Number Voxel Surface area / mm2 Sphericity No. Max. Min. Mean Max. Min. Mean Max. Min. Mean 4 Gas pore 98 159 20 50.66 0.08 0.02 0.03 0.70 0.51 0.56 Gas-shrinkage pore 84 678 24 89.74 0.23 0.02 0.05 0.50 0.41 0.47 Shrinkage pore 8 7315 212 1676.25 2.12 0.14 0.55 0.38 0.24 0.34 5 Gas pore 86 540 20 59.62 0.15 0.04 0.04 0.64 0.51 0.55 Gas-shrinkage pore 88 454 20 76.41 0.19 0.02 0.05 0.50 0.40 0.47 Shrinkage pore 10 779 38 289.90 0.32 0.04 0.15 0.39 0.33 0.37 6 Gas pore 102 210 20 52.04 0.09 0.02 0.03 0.66 0.51 0.55 Gas-shrinkage pore 87 622 20 115.61 0.23 0.02 0.07 0.50 0.41 0.46 Shrinkage pore 3 751 37 341.00 0.39 0.04 0.19 0.39 0.28 0.35 7 Gas pore 68 186 20 51.49 0.08 0.02 0.03 0.65 0.51 0.54 Gas-shrinkage pore 72 424 20 84.18 0.18 0.02 0.05 0.50 0.40 0.45 Shrinkage pore 11 1280 224 682.09 0.56 0.12 0.30 0.39 0.28 0.34