00Cr25Ni7Mo4N钢离心机锥转鼓爆裂失效分析  

Burst failure analysis of 00Cr25Ni7Mo4N steel centrifuge cone drum

作　　者：谭彦显 

机构地区：[1]湖南省黑色金属产品质量监督检验授权站,湖南长沙410014

出　　处：《金属热处理》2015年第6期204-207,共4页Heat Treatment of Metals

摘　　要：某00Cr25Ni7Mo4N(2507)双相不锈钢材料的离心机锥转鼓在试车时爆裂,对爆裂零件的断口宏观形貌、显微组织、力学性能及化学成分进行检验。结果表明,该零件为脆性断裂,断裂原因是其在固溶处理时加热温度偏低产生大量网状、块状的σ相使材料脆性大增,在随后的生产过程中不断产生微裂纹所致。A 00Cr25Ni7Mo4N( 2507) steel centrifugal cone drum bursted during its test process. Fracture macromorphology,microstructure,mechanical properties and chemical composition of the bursted cone drum were tested. The results show that the fracture of the cone drum is brittle. The reason is that a lot of σ phase produced during low temperature solution that increases the brittleness,and in the subsequent production process micro cracks appear continuously.

关 键 词：锥转鼓 脆性断裂 固溶处理 Σ相 

分 类 号：TG115[金属学及工艺—物理冶金]