2 .Frozen sand casting 功0 Resin sand casting 冷冻砂型铸造 223.73MP 400剧5000 树脂砂型铸造 -223.73MP 160 203.90MPa 203.90MPa 100 S30 000 20 0. 0.2030.40.50.60.70.8 0.1020.30.40.50.60.70.8 工程应变(%) Strain/% 图6冷冻砂型和树脂砂型铸造铅合金抗拉强度 Fig.56 Tensile strength of aluminum alloy cast in frozen sand mold and resin sand mold (b) Dimple fracture Quanta FEG 公 (b) dimple fracture韧 韧富裂图 56 冷冻砂型和树脂砂型铸造铝合金抗拉强度 Fig. 56 Tensile strength of aluminum alloy cast in frozen sand mold and resin sand mold 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 20 40 60 80 100 120 140 160 180 200 220 240 Stress/M Pa Strain/% Frozen sand casting Resin sand casting 203.90MPa 223.73MPa 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 20 40 60 80 100 120 140 160 180 200 220 240 MPa 工 程 应 力( ) 工程应变(%) 冷冻砂型铸造 树脂砂型铸造 223.73MPa 203.90MPa Dimple fracture Dimple fracture (a) (b) dimple fracture 韧 窝断裂 韧窝断裂 (a) (b) 录用稿件,非最终出版稿