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对铸态及电解充氢试样做对比试验后证实，中硅耐热球铁在铸造状态下能固溶一定数量的氢． 氢在石墨／基体界面处明显聚集，降低界面结合能，引发脆性裂纹．拉伸断口亦有明显的氢脆特征．以 上表明，使中硅耐热球铁致脆的裂纹源即石墨／基体界面
After comparing the as-cast and electrolyzed hydrogen-filled samples, it is confirmed that the heat-resistant ductile iron in the silicon can dissolve a certain amount of hydrogen in the cast state. Hydrogen at the graphite / matrix interface significantly gathered to reduce the interface bonding energy, causing brittle crack. Tensile fracture also has obvious hydrogen embrittlement. The above shows that the heat-resistant medium-sized ductile iron source that is brittle cracks graphite / matrix interface