A、0.12-0.17% B、0.7-0.12% C、0.17-0.22%
A、夾渣 B、縱裂紋 C、皮下氣泡
A、δFe(固體)+L(液體)=γFe(固體) B、αFe(固體)+L(液體)=γFe(固體) C、δFe(固體)+L(液體)=αFe(固體)