石墨/基体界面处的氢与中硅耐热球铁脆性  

Effcct of hydrogen in interface of graphitc/metal matrix on brittleness of medium silicon heat-resistant nodular cast iron

作　　者：古可成[1] 陈晶[1] 杨俊豪 佟敏[2] 陈廉[2] 

机构地区：[1]沈阳工业大学材料科学与工程学院,辽宁沈阳110023 [2]中国科学院金属研究所,辽宁沈阳110015

出　　处：《沈阳工业大学学报》2000年第2期96-99,共4页Journal of Shenyang University of Technology

基　　金：辽宁省自然科学基金!(962193)

摘　　要：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。The had done conrtast experiments between the specimen which was electrolyaed and filled with hydrogen and specimen which was during foundry, show that medium silicon heat resistant nodular cast iron can solute the number of hydrogen which enriches in the interface of graphitic/ metal matrix, therefore, decreases the binding energy of interface, and leads to brittle crackle. The tensile fracture surface has obviously character istic of hydrogen brittle. The results show that crackle root of medium silicon heat resistant nodular cast iron is the interface of graphtec/metal matrix.

关 键 词：氢脆 脆性 中硅耐热球铁 石墨/基体界面 

分 类 号：TG143.5[一般工业技术—材料科学与工程]