1Cr17Ni2钢碟式分离机转鼓开裂失效分析  

Fracture analysis on disc separator drum made of 1Cr17Ni2 steel

作　　者：罗娟[1] 胡伟勇 郦剑[1] 

机构地区：[1]浙江大学材料系,浙江杭州310027 [2]浙江中集铸锻有限公司,浙江绍兴312500

出　　处：《金属热处理》2010年第12期127-129,共3页Heat Treatment of Metals

摘　　要：通过直读光谱、金相检验、形貌扫描和EDS能谱对1Cr17Ni2碟式分离机转鼓密封槽边缘开裂进行失效分析。结果表明,热加工过程中由于温度控制不当和碳含量过高发生过烧而产生的MnS夹杂和晶界氧化是转鼓密封槽边缘开裂的主要原因,组织中存在的网状铁素体也对开裂起到促进作用。The cracking for the sealed groove of the 1Cr17Ni2 steel disc separator drum was investigated by optical spectrum, metallographic microscope, SEM and EDS.The results show that the main cause of cracking is MnS inclusions and the oxidation of the crystal boundary, formed in burning temperature because of the unsuitable temperature control and the higher carbon content.The network of the primary ferrite in the microstructure also promotes the cracking.

关 键 词：1CR17NI2钢 开裂 失效分析 过烧 

分 类 号：TG162.7[金属学及工艺—热处理]