圆锥压头递增载荷对材料的划痕行为

刘明, 伍家楠

Scratch Behavior of Materials under Progressive Load by Conical Indenter

LIU Ming, WU Jianan

表3 使用不同公式计算的断裂韧性

Table 3 Fracture toughness calculated by different formulas (MPa·m1/2)

Materials Eq.(7) Eq.(10) Eq.(12) Eq.(13) SENB/CNB/IF method PMMA 1.42 1.39 1.07 2.16 1.5[61] PC 2.1 2.87 2.7 6.6 2.2[17] Fused silica 0.78 0.76 0.73 1.26 0.8[17] S-L glass 1.05 1.09 1.09 1.9 0.75[62] Si3N4 1.37 1.32 1.32 2.3 1.26[40] Al2O3 2.67 2.59 2.59 5.66 2.346[41] Si 1.18 1.2 1.2 2.08 1.28[42] SiC 2.86 2.91 2.92 6.2 2.8[63] Cu 8.6 8.32 8.29 15.24 9.4[64] BMG-3 5 3.45 3.05 5.33 5.6[43] BMG-2 7 4 4.11 7.3 4.2[43] BMG-4 8.6 6.8 6.68 11.97 6.5[43] Mo 11 8 12.3 24.1 24.2[65] W 10.21 5.75 5.9 12.88 14[66] AZ31 3.79 5 4.82 14 15.9[44] BMG-1 5.64 5.64 5.62 9.3 8.2[43]